ML2420 - Television Vevor - Free user manual and instructions

Product Type	MPPT Solar Charge Controller
Brand	Vevor
Model	ML2420
Dimensions (L x W x H)	210 x 151 x 59.5 mm
Weight	1.4 kg
System Voltage	12 V / 24 V automatic
Rated Charging Current	20 A
Max. PV Input Voltage	100 V (25 °C) / 90 V (-25 °C)
Max. PV Power	260 W (12 V) / 520 W (24 V)
Conversion Efficiency	≤ 98%
MPPT Tracking Efficiency	Up to 99.9%
Idle Consumption	0.7 W to 1.2 W
Supported Battery Types	Sealed lead-acid, gel, open, lithium, user
Display	LCD screen + 4 LED indicators
Communication	RS232 / RS485 (Modbus protocol)
Protection Functions	Polarity reversal, overvoltage, short circuit, overheating, TVS lightning
Protection Rating	IP32
Operating Temperature	-35 °C to 45 °C
Max. Altitude	3000 m
Recommended Maintenance	Biannual inspection, heatsink cleaning, connection check
Spare Parts	Recommended fuse/circuit breaker (not included)
Warranty	Technical support via www.vevor.com/support

Frequently Asked Questions - ML2420 Vevor

What is the maximum solar panel voltage that the ML2420 can accept?

The maximum open-circuit voltage is 100 V at 25 °C and 90 V at -25 °C. Do not exceed these limits to avoid damaging the controller.

How to install the ML2420 controller?

Install the controller in a well-ventilated indoor location. Follow the wiring order: first the battery, then the load, finally the solar panel. Use fuses or circuit breakers on each side for safety.

What types of batteries are compatible?

The controller supports sealed lead-acid, gel, open, lithium batteries and a custom user mode. Default charging parameters are preset for each type.

How to set the charging mode?

Press and hold the Set button to access settings. Use the Up/Down buttons to change parameters such as battery type, charging voltages, etc. Confirm by holding Set.

What does the always-on ERROR indicator mean?

A system fault is detected. Refer to the error table (E1 to E18) in the manual to identify the issue. For example, E1 indicates over-discharge, E4 a load short circuit.

How to connect the monitoring app?

Scan the QR code in the manual to download the app. Connect your phone via RS232/RS485 and follow the instructions to monitor data in real time.

What is the difference between MPPT and a classic PWM controller?

MPPT continuously optimizes the maximum power point of the solar panel, increasing charging efficiency by 15 to 20% compared to PWM. It adjusts voltage and current to extract maximum energy.

How to maintain the ML2420 controller?

Perform an inspection twice a year: check ventilation, clean the heatsink, tighten connections, inspect cables for damage, and replace the surge protector if necessary.

What to do if the battery is discharged and the controller is not charging?

Check the connections, fuse status, and solar panel voltage. If error E15 appears (battery not connected), ensure the battery is properly connected. For lithium batteries, the BMS protection may be active.

What is the maximum capacitive load capacity?

The controller can support capacitive loads up to 10000 μF, allowing instant startup of high loads without damaging the device.

USER MANUAL ML2420 Vevor

ML MAXIMUM POWER POINT TRACKING (MPPT)

MODEL: ML2420

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

Technical Support and E-Warranty Certificate www.vevor.com/support

This is the original instruction. Please read all manual instructions carefully before operating. VEVOR reserves the right to interpret the user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you of any technology or software updates on our product.

	Warning-To reduce the risk of injury, user must read instructions manual carefully.
	This device complies with Part 15 of the FCC Rules. Operat subject to the following two conditions:(1)This device may not harmful interference, and (2)this device must accept any inter received, including interference that may cause undesired oper
	This product is subject to the provision of European D 2012/19/EC. The symbol showing a wheelie bin crossed through indicates that the product requires separate refu collection in the European Union. This applies to the p and all accessories marked with this symbol. Products as such may not be discarded with normal domestic w must be taken to a collection point for recycling electri electronic devices

Model	ML2420
Battery voltage	12V/24V
Max. PV open circuit voltag	100V(25°C), 90V(-25°C)
Charge current	20A
Max. PV input power	20A

Dear users, Thank you very much for choosing our products!

SAFETY INSTRUCTIONS

1. As this controller deals with voltages that exceed the top limit for human safety, do not operate it before reading this manual carefully and completing safety operation training.
2. The controller has no internal components that need maintenance or service, thus do not attempt to disassemble or repair the controller.
3. Install the controller indoors, and avoid component exposure and water intrusion.
4. During operation, the radiator may reach a very high temperature, therefore install the controller at a place with good ventilation.
5. It's recommended that a fuse or breaker be installed outside the controller.
6. Before installing and wiring the controller, make sure to disconnect the photovoltaic array and the fuse or breaker close to the battery terminal.
7. After installation, check if all connections are solid and reliable to avoid loose connections that may give rise to dangers caused by heat accumulation.

Warning: means the operation in question is dangerous, and you should get properly prepared before proceeding.

Note: means the operation in question may cause damage.

Tips: means advice or instruction for the operator.

Table of Contents

1. Product Introduction ......05
2. Product Installation ....13
3. Product Operation and Display....19
4. Product Protection and System Maintenance....25
5. Technical Parameters....30
6. Conversion Efficiency Curve....32
7. Product Dimensions....33
8. APP control function....34

1. PRODUCT INTRODUCTION

1.1 Product Overview

• This product can keep monitoring the solar panel's generating power and tracking the highest voltage and current values (VI) in real time, enabling the system to charge the battery at maximum power. It's designed to be used in off-grid solar photovoltaic systems to coordinate operation of the solar panel, battery and load, functioning as the core control unit in off-grid photovoltaic systems.
• This product features an LCD screen that can dynamically display operating status, operating parameters, controller logs, control parameters, etc. Users can conveniently check parameters by using the keys, and modify control parameters to cater to different system requirements.
• The controller utilizes the standard Modbus communication protocol, making it easy for users to check and modify system parameters on their own. Besides, by providing free monitoring software, we give users the maximum convenience to satisfy their varied needs for remote monitoring.
• With comprehensive electronic fault self-detecting functions and powerful electronic protection functions built inside the controller, component damage caused by installation errors or system failures can be avoided to the greatest extent possible.

1.2 Product Features

• With the advanced dual-peak or multi-peak tracking technology, when the solar panel is shadowed or part of the panel fails resulting in multiple peaks on the I-V curve, the controller is still able to accurately track the maximum power point.
• A built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of photovoltaic systems, and raise the charging efficiency by 15% to 20% compared with the conventional PWM method.

- A combination of multiple tracking algorithms enables accurate tracking of the optimum working point on the I-V curve in an extremely short time.

- The product boasts an optimum MPPT tracking efficiency of up to 99.9%.

- Advanced digital power supply technologies raise the circuit's energy conversion efficiency to as high as 98%.

- Charging program options are available for different types of batteries including gel batteries, sealed batteries, open batteries, lithium batteries, etc.

- The controller features a limited current charging mode. When the solar panel power exceeds a certain level and the charging current is larger than the rated current, the controller will automatically lower charging power and bring the charging current to the rated level.

- Instantaneous large current startup of capacitive loads is supported.

- Automatic recognition of battery voltage is supported.

- LED fault indicators and an LCD screen which can display abnormality information help users to quickly identify system faults.

- Historical data storage function is available, and data can be stored for up to a year.

- The controller is equipped with an LCD screen that allows users to not only check device operating data and statuses, but also modify controller parameters.

- The controller supports the standard Modbus protocol, fulfilling the communication needs of various applications.

- The controller employs a built-in over-temperature protection mechanism. When the temperature surpasses the set value, the charging current will decline in linear proportion to the temperature, as well as the temperature rise of the controller, effectively preventing the controller from being damaged by overheating.

- Featuring a temperature compensation function, the controller can automatically adjust charging and discharging parameters to extend the battery's service life.

- TVS lightning protection.

1.3 Exterior and Interfaces

Fig. 1-1 Product appearance and interfaces

No.	Item	No.	Item
1	Charging indicator	10	Battery "+" interface
2	Battery indicator	11	Battery "-" interface
3	Load indicator	@	Load "+" interface
4	Abnormality indicator	13	Load "-" interface
5	LCD screen	14	External temperature sampling interface
6	Operating keys	15	RS232/RS485 communication interface
7	Installation hole
8	Solar panel "+" interfad
9	Solar panel "-" interfad

1.4 Introduction to Maximum Power Point Tracking Technology

Maximum Power Point Tracking (MPPT) is an advanced charging technology that enables the solar panel to output more power by adjusting the electric module's operating status. Due to the nonlinearity of solar arrays, there exists a maximum energy output point (maximum power point) on their curves. Unable to continuously lock onto this point to charge the battery, conventional controllers (employing switching and PWM charging technologies) cannot get the most power from the solar panel. However, a charge controller featuring MPPT technology can continuously track the array's maximum power point to obtain the maximum amount of power to charge the battery.

Take a 12V system as an example. As the solar panel's peak voltage is approximately 17V while the battery's voltage is around 12V, when charging with a conventional charge controller, the solar panel's voltage will stay at around 12V, failing to deliver the maximum power. However, an MPPT controller can overcome this problem by adjusting the solar panel input voltage and current in real time, realizing maximum input power.

Compared with conventional PWM controllers, the MPPT controller can make the most of the solar panel's maximum power and therefore provide a larger charging current. Generally speaking, the latter can raise the energy utilization ratio by 15% to 20% in contrast with the former.

Fig. 1-2 Solar panel output characteristic curve

Meanwhile, due to changing ambient temperature and illumination conditions, the maximum power point varies frequently, and our MPPT controller can adjust parameter settings according to the environmental conditions in real time, so as to always keep the system close to the operating point. The whole process is entirely automatic without the need for human intervention.

Fig. 1-3 Relation between solar panel output characteristics and illumination

Fig. 1-4 Relation between solar panel output characteristics and temperature

1.5 Charging Stage Introductions

As one of the charging stages, MPPT cannot be used alone. It is required to combine boost charge, floating charge, equalizing charge and other charging methods to complete the battery charging process. A complete charging process includes: Quick charge, holding charge and floating charge. Charging curve is shown below:

Fig. 1-5 SLD Battery charging stages diagram Fig. 1-6 LI Battery charging stages diagram

a) Fast charging

At the fast charging stage, as the battery voltage has not reached the value of full voltage (i.e. equalizing/boost voltage) yet, the controller performs MPPT charging on the battery with the maximum solar power. When the battery voltage reaches the preset value, constant voltage charging will begin.

b) Sustaining charging

When the battery voltage reaches the set value of holding voltage, the controller will perform constant voltage charging. This process will no longer include MPPT charging, and the charging current will gradually decrease with time. Holding charge comes in two stages, i.e. equalizing charge and boost charge. The two stages are conducted without repetition, in which equalizing charge is started once every 30 days.

Boost charging

By default, boost charging generally lasts for 2h, but users can adjust preset values of duration and boost voltage point according to the actual needs. When the duration reaches the set value, the system will then switch to floating charging.

Equalizing charging

Warning: Risk of explosion!

In equalizing charging, an open lead-acid battery can produce explosive gas, therefore the battery chamber shall have good ventilation condition.

Note: risk of equipment damage!

Equalizing charging may raise the battery voltage to a level that may damage sensitive DC loads. Check and make sure that allowable voltages of all the loads in the system are greater than the set value of battery equalizing charging.

Note: risk of equipment damage!

Overcharge or too much gas generated may damage battery plates and cause active material on the battery plates to scale off. Equalizing charging to an excessively high level or for too long a period may cause damage. Read carefully the actual requirements of the battery deployed in the system.

Some types of batteries benefit from regular equalizing charging which stirs the electrolyte, balances the battery voltage, and finishes the electrochemical reaction. Equalizing charging raises the battery voltage to a higher level than the standard supply voltage and gasifies the battery electrolyte. If the controller then automatically steers the battery into equalizing charging, the charging duration is 120 minutes (default). In order to avoid too much generated gas or battery overheating, equalizing charge and boosting charging won't repeat in one complete charging cycle.

Note:

1) When due to the installation environment or working loads, the system can't continuously stabilize the battery voltage to a constant level, the controller will initiate a timing process, and 3 hours after the battery

reaches the set value, the system will automatically switch to equalizing charging.

2) If no calibration has been done to the controller clock, the controller will perform equalizing charging regularly according to its internal clock.

➤ Floating charging

When finishing the sustaining charging stage, the controller will switch to floating charging in which the controller lowers the battery voltage by diminishing the charging current and keeps the battery voltage at the value of floating charging voltage. In the floating charging process, visible light charging is carried out for the battery to maintain it in a full state. At this stage, the loads can access almost all the solar power. If the loads consume more power than the solar panel can provide, the controller will not be able to keep the battery voltage at the floating charging stage, the battery voltage drops to the set value for returning to boost charge, the system will exit floating charging and re-enter into fast charging.

2. PRODUCT INSTALLATION

2.1 Installation Precautions

• Be very careful when installing the battery. For open lead-acid batteries, wear a pair of goggles during installation, and in case of contact with battery acid, flush with water immediately.
• In order to prevent the battery from being short-circuited, no metal objects shall be placed near the battery.
• Acid gas may be generated during battery charging, thus make sure the ambient environment is well ventilated.
• Keep the battery away from fire sparks, as the battery may produce flammable gas.
• When installing the battery outdoors, take sufficient measures to keep the battery from direct sunlight and rain water intrusion.
• Loose connections or corroded wire may cause excessive heat generation which may further melt the wire's insulation layer and surrounding materials, and even cause a fire. Therefore, make sure connections are tightened securely. Wires had better be fixed properly with ties, and when needs arise to move things, avoid wire sway as to keep connections from loosening.
• When connecting the system, the output terminal's voltage may exceed the top limit for human safety. If operation needs to be done, be sure to use insulation tools and keep hands dry.
• The wiring terminals on the controller can be connected with a single battery or a pack of batteries. Following descriptions in this manual apply to systems employing either a single battery or a pack of batteries.
• Follow the safety advice given by the battery manufacturer.
• When selecting connection wires for the system, follow the criterion that the current density is not larger than 2.4A/mm².
• Connect the controller's earth terminal to the ground.

2.2 Wiring Specifications

Wiring and installation methods must comply with national and local electrical specifications. The wiring specifications of the battery and load must be selected according to rated currents, and see the following table for wiring specifications:

Models	Rated charging current	Rated discharging current	Battery wire diameter (mm2)	Load wire diameter (mm2)
ML2420	20A	20A	5 mm2	5 mm2

2.3 Installation and Wiring

Warning: risk of explosion! Never install the controller and an open battery in the same enclosed space! Nor shall controller be installed in an enclosed space where battery gas may accumulate.

controller and an open battery in the same enclosed space! Nor shall the controller be installed in an enclosed space where battery gas may accumulate.

Warning: danger of high voltage! Photovoltaic arrays

may produce a very high open-circuit voltage. Open the breaker or fuse before wiring, and be very careful during the wiring process.

Note: when installing the controller, make sure that

enough air flows through the controller's radiator, and leave at least 1 mm of space both above and below the controller so as to ensure convection for heat dissipation. If the controller is installed in an enclosure box, make sure the box delivers a reliable heat dissipation effect.

Fig. 2.1 Installation and heat dissipation

Step 1: choose the installation site

Do not install the controller at a place that is subject to direct sunlight, high temperature, or water intrusion, and make sure the ambient environment is well ventilated.

Step 2: first place the installation guide plate in a proper position, use a marking pen to mark the mounting points, then drill 4 mounting holes at the 4 marked points, and fit screws in.

Step 3: fix the controller

Aim the controller's fixing holes at the screws fit in Step 2 and mount the controller on.

Step 4: wire

First remove the two screws on the controller, and then begin wiring operation. In order to guarantee installation safety, we recommend the following wiring order; however, you can choose not to follow this order, as no damage will be incurred to the controller.

① Connecting to external temperature sampling interface ② Connecting communication cable ③ Connecting power cable

Warning: risk of electric shock! We strongly recommend that fuses or breakers be connected at the photovoltaic array side, load side, and battery side so as to avoid electric shock during wiring operation or faulty operations, and make sure the fuses and breakers are in an open state before wiring.

Warning: danger of high voltage! Photovoltaic arrays may produce very high open-circuit voltage. Open the breaker or fuse before wiring and be very careful during the wiring process.

Warning: risk of explosion! Once the battery's positive and negative terminals or leads that connect to the two terminals get short-circuited, fire or explosion will occur. Always be careful in operation.

First connect the battery, then the load, and finally the solar panel. During wiring, follow the order of first "+" and then "-".

④ Power on

After connecting all power wires solidly and reliably, check again that the wiring is correct and that the positive and negative poles are not reversed. After confirming that no faults exist, first close the fuse or breaker of the battery, then see whether the LED indicators light up and the LCD screen displays information. If the LCD screen fails to display information, open the fuse or breaker immediately and recheck that all connections are correctly done.

If the battery functions normally, connect the solar panel. If sunlight is intense enough, the controller's charging indicator will light up or flash to begin charging the battery.

After successfully connecting the battery and photovoltaic array, finally close the fuse or breaker of the load, and then you can manually test whether the load can be normally turned on and off. For details, reference information about load working modes and operations.

Warning: when the controller is in a normal charging state,

disconnecting the battery will have some negative effect on the DC load and in extreme cases, the loads may get damaged.

Warning: within 10 minutes after the controller stops charging, if the battery's poles are reversely connected, internal components of the controller may get damaged.

Note:

1) The battery's fuse or breaker shall be installed as close to the battery side as possible. It's recommended that installation distance be not more than 150mm.

2) If no remote temperature sensor is connected to the controller, the battery temperature will stay at 25\ °C .

3) If an inverter is deployed in the system, directly connect the inverter to the battery, and connect it to the controller's load terminals.

3. PRODUCT OPERATION AND DISPLAY

3.1 LED Indicators

	[H5CS]	PV array indicato	Indicating the controller's current charging mode.
		BAT indicator	Indicating the battery's current state.
		LOAD indicator	Indicating the loads' On/ Off and state.
		ERROR indicator	Indicating whether the controller is functioning norma

PV array indicator:

No.	CHARGE STATUS		Indicator state	Charging state
1		BULK	Steady on	MPPT charging
2		ACCEPTANCE	Slow flashing(a cycle of 2s with on and of lasting for 1s)	Boost charging
3		FLOAT	Single flashing(a cycle of 2s with on and off respectively for 0 1s and 1	Floating charging
4		EQUALIZE	Quick flashing(a cycle of 0.2s with on and of lasting for 0.1s)	Equalizing charging
5		CURRENT-LIMITED	Double flashing(a cycle of 2s with on for 0.1s, on again for 0.1s, and off for 1.7s)	Current-limited charging
6			Off	No charging

BAT indicator:

Indicator state	Battery state
Steady on	Normal battery voltage
Slow flashing (a cycle of 2s with on and off each 1s)	Battery over-discharged
Quick flashing (a cycle of 0.2s with on and off each 0.1s)	Battery over-voltage

LOAD indicator:

Indicator state	Load state
Off	Load turned off
Quick flashing (a cycle of 0.2s with on and off e lasting for 0.1s)	Load overloaded/ short-circuited
Steady on	Load functioning normally

ERROR indicator:

Indicator state	Abnormality indication
Off	System operating normally
Steady on	System malfunctioning

3.2 Keys Operation

▲ Up	Page up; increase the parameter value in setting
▼ Down	Page down; decrease the parameter value in set
◀ Return	Return to previous menu (exit without saving)
▶ Set	Enter into sub-menu; set/ saveTurn on/ off loads (in manual mode)

3.3 LCD Startup and Main Interface

3.3.1 Startup interface

During startup, the 4 indicators will first flash successively, and after self-inspection, the LCD screen starts and displays the battery's voltage level which will be either a fixed voltage selected by the user or an automatically recognized one.

3.3.2 Main interface

3.4 Load Mode Setting Interface

3.4.1 Load modes introduction

This controller has 5 load operating modes which will be described below.

No.	Mode	Descriptions
0	Sole light control (nighttime on and daytime off)	When no sunlight is present, the solar panel voltage is than the light control on voltage, and after a time delta controller will switch on the load; when sunlight emerge solar panel voltage will become higher than the light co off voltage, and after a time delay, the controller will s the load.
1~14	Light control + time contr to 14 hours	When no sunlight is present, the solar panel voltage is than the light control on voltage, and after a time delta controller will switch on the load. The load will be swit after working for a preset period of time.
15	Manual mode	In this mode, the user can switch the load on or off no matter whether it's day or night. This mode is desi some specially purposed loads, and is also used in the debugging process.
16	Debugging mode	Used for system debugging. With light signals, the load off; without light signals, the load is switched on. This enables a fast check of the correctness of system insta during installation debugging.
17	Normal on mode	The energized load keeps outputting, and this mode is for loads that need 24-hour power supply.

3.4.2 Load mode adjustment

Users can adjust the load mode as needed on their own, and the default mode is debugging mode (see "load modes introduction"). The method of adjusting load modes is as follows:

3.4.3 Manual load on/off page

Manual operation is effective only when the load mode is manual mode (15), and tap the Set key to switch on/off the load under any main interface.

3.5 System Parameter Settings

Under any interface other than load modes, press and hold the Set key to enter the parameter setting interface.

After entering the setting interface, tap the Set key to switch the parameter value in the menu. Then tap the Return key to exit (without saving parameter setting), or press and hold the Set key to save the setting and exit.

Note: after system voltage setting, the power supply has to be switched off and then on again, otherwise the system may work under an abnormal system voltage.

The controller enables users to customize the parameters according to actual conditions, but parameter setting must be done under the guidance of a professional person, or else faulty parameter settings may render the system unable to function normally. For details about parameter settings, see table 3.

Parameter setting cross reference table
No.	Displayed item	Description	Parameter range	Default setting
1	TYPE OF BA	Battery type	User/flooded/Sealed/Gel	Sealed
2	VOLT OF SY	System voltage	12V/24V	AUTO
3	EQUALIZ CHC	Equalizing charging voltage	9.0 ~ 17.0V	14.6V
4	BOOST CHG	Boost charging voltage	9.0 ~ 17.0V	14.4V
5	FLOAT CHG	Floating charging voltage	9.0 ~ 17.0V	13.8V
6	LOW VOL RECT	Over-discharge recovery voltage	9.0 ~ 17.0V	12.6V
7	LOW VOL DISC	Over-discharge voltage	9.0 ~ 17.0V	11.0V

4. PRODUCT PROTECTION AND SYSTEM MAINTENANCE

4.1 Protections

▶ Waterproofing protection

Rating: IP32

▶ Input power limited protection

When the power of the solar panel is higher than the rated value, the controller will limit the power of the solar panel within the rated power range to prevent damage by over current, and the controller will enter the current-limiting charge.

▶ Battery reverse polarity protection

If the battery polarity is reversed, the system will not work but it will burn out the controller.

PV input end voltage is too high

If the voltage at the PV array input end is too high, the controller will automatically shut off the PV input.

PV input end short circuit protection

If the voltage at the PV array input end is short circuited, the control turns off charging; after the short circuit is removed, charging will automatically recover.

PV input reverse polarity protection

When the polarity of the PV array is reversed, the controller will not be damaged, and normal operation will continue after the wiring error is corrected.

Night reverse charging protection

Prevents battery discharge through the solar panel at night.

▶ TVS lightning protection

➢ Over-temperature protection

When the controller temperature exceeds the set value, it will decrease charging power or halt charging.

See the following diagram:

4.2 System Maintenance

• In order to maintain the best long-term performance for the controller, it is recommended to conduct inspections twice a year.
• Make sure the airflow around the controller is not obstructed and remove any dirt or debris from the heat sink.
• Check if the insulation layers of all exposed wires are damaged due to sun exposure, friction with other objects nearby, dry rot, destruction by insects or rodents, etc. If so, it is necessary to repair or replace the wire.
• Verify if indicators are consistent with the device operations. Please note to take corrective actions for any malfunctions or error indications if necessary.
• Check all wiring terminals for corrosion, insulation damage, signs of high temperature or burning/discoloration, and tighten the terminal screws firmly.
• Check for dirt, insects nesting and corrosion and clean as required.
• If the lightning arrester has failed, replace it in time to protect the controller and other devices of the user from being damaged by lightning operations. Please note to take corrective actions for any malfunctions or error indications if necessary.

Warning: risk of electric shock! Before carrying out the above checkings or operations, always make sure all power supplies of the controller have been cut off!

4.3 Abnormality Display and Warnings

Error	Description	Controller action	Indicator status
E0	Normal	-	LED indication
E1	Over discharge	Turn off load	BAT indicator flashes slowly, ERROR indi is steady on
E2	Battery over voltage	Turn off charging	BAT indicator flashes fast, ERROR indica steady on
E3	Under-voltage warning	Battery level indicatio	ERROR indicator is steady on
E4	Load short circuit	Turn off load	LOAD indicator flashes fast, ERROR indic is steady on
E5	Load over current	Delayed to turn off load	LOAD indicator flashes fast, ERROR indic is steady on
E6	Device over temperature	Run with reduced power	ERROR indicator is steady on
E7	Battery over temperature	Turn off charging	ERROR indicator is steady on
E8	Solar panel power too large	Charge with limited current	ERROR indicator is steady on
E10	Solar panel over voltage	Disable charging	ERROR indicator is steady on
E13	Solar panel revers polarity	Disable charging	ERROR indicator is steady on
E15	Battery not connected lithium battery feed protection	When the lithium battery meets the charging conditions will activate chargingLead-acid battery, when the battery is not detected, it disables charging, when the battery is detected, it will rescharging automatically	ERROR indicator is steady
E16	Battery over temperature (E7 and E16 are different in that charging and discharging have separate upper limit protection temperatures)	Turn off load	ERROR indicator is steady
E18	BMS over-current protection	Turn off charging	ERROR indicator is steady

5. TECHNICAL PARAMETERS

5.1 Electrical parameters

Parameter	Value
Model	ML2420
System voltage	12V/24V Auto
No-load loss	0.7W to 1.2W
Battery voltage	9V to 35V
Max. solar input volta	100V(25 °C) ; 90V(-25 °C)
Max. power point voltage	Battery Voltage+2V to 75V
Rated charging current	20A
Rated load current	20A
Max. capacitive load capacity	10000uF
Max. photovoltaic system input power	260W / 12V520W / 24V
Conversion efficiency	≤98%
MPPT tracking efficien	>99%
Temperature	- 3 mv/°C / 2V (default)
Operating temperature	- 35 °C to 45 °C
Protection degree	IP32
Weight	1.4 kg
Communication method	RS232 / RS485
Altitude	≤ 3000 m
Product dimensions	210 x 151 x 59.5 mm

5.2. Battery type default parameters

Comparison Table of Parameters for Each Type of Battery
Setting VoltageBattery Type	SealedLead-AcidBattery	GelledLead-AcidBattery	OpenLead-AcidBattery	LI Battery	User(User-Defined)
OvervoltageDisconnectVoltage	16.0V	16.0V	16.0V		9~17V
Equalizing Voltage	14.6V		14.8V		9~17V
Boost Voltage	14.4V	14.2V	14.6V	14.4V	9~17V
Floating Voltage	13.8V	13.8V	13.8V		9~17V
Boost RestoringVoltage	13.2V	13.2V	13.2V		9~17V
Low VoltageDisconnectRestoring Voltage	12.6V	12.6V	12.6V	12.6V	9~17V
Under-VoltageAlarming Voltage	12.0V	12.0V	12.0V		9~17V
Low VoltageDisconnectVoltage	11.1V	11.1V	11.1V	11.1V	9~17V
Discharging LimitVoltage	10.6V	10.6V	10.6V		9~17V
Over-DischargeDelay Time	5s	5s	5s		1~30s
EqualizingDuration Time	120Min		120Min		0~ 600Min
EqualizingCharging Interva	30Days	0Day	30Days		0~ 250D(0 refers close equalizing charging function)
Boost DurationTime	120Min	120Min	120Min		10~600Min

When selecting User, the battery type is to be self-customized, and in that case, the default system voltage parameters are consistent with those of the sealed lead-acid battery. When modifying battery charging and discharging parameters, the following rule must be followed:

• Over-voltage cut-off voltage > Charging limit voltage ≥ Equalizing voltage ≥ Boost voltage ≥ Floating charging voltage > Boost return voltage; ● Over-voltage cut-off voltage > Over-voltage cut-off return voltage;
• Low-voltage cut-off return voltage > Low-voltage cut-off voltage ≥ Discharging limit voltage; ● Under-voltage warning return voltage > Under-voltage warning voltage ≥ Discharging limit voltage;
• Boost return voltage > Low-voltage cut-off return voltage

6. CONVERSION EFFICIENCY CURVE

6.1 12V System Conversion

6.1 24V System Conversion

1. PRODUCT DIMENSIONS

ML2420

Product dimensions: 210*151*59.5mm

Hole positions: 154*131mm

Hole diameter: Φ3mm

Applicable wire: max. 8 AWG

8. APP CONTROL FUNCTION

- Please use your mobile phone to scan the QR code in the image

• Follow the prompts to download the APP software and complete the follow-up.
• After the APP installation is completed, please follow the prompts to set up the connection. After the connection is successful, you can query the information of the device and control the device on your mobile phone.

Address: Baoshanqu Shuangchenglu 803long 11hao 1602A-1609shi Shanghai

Imported to AUS: SIHAO PTY LTD, 1 ROKEVA STREETEASTWOOD NSW 2122 Australia

Imported to USA: Sanven Technology Ltd, Suite 250, 9166 Anaheim Place, Rancho Cucamonga, CA 91730

EC

REP

SHUNSHUN GmbH

Römeräcker 9 Z2021, 76351

Unit 5 Albert Edward House, The

Pavilions Preston, United Kingdom

Made In China

VEVOR®

TOUGH TOOLS, HALF PRICE

Technical Support and E-Warranty Certificate www.vevor.com/support

VEVOR®

TOUGH TOOLS, HALF PRICE

We continue to be committed to provide you tools with competitive price. "Save Half", "Half Price" or any other similar expressions used by us only represent of savings you might benefit from buying certain tools with us compared top brands and does not necessarily mean to cover all categories of tools offered are kindly reminded to verify carefully when you are placing an order with us actually saving half in comparison with the top major brands.

VEVOR®

TOUGH TOOLS, HALF PRICE

ML MAXIMUM POWER POINT TRACKING (MPPT)

MODEL: ML2420

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

Technical Support and E-Warranty Certificate www.vevor.com/support

This is the original instruction, please read all manual instruction carefully before operating. VEVOR reserves a clear interpretation user manual. The appearance of the product shall be subject to product you received. Please forgive us that we won't inform you there are any technology or software updates on our product.

1. PRODUCT INTRODUCTION

1.1 Product Overview

1.2 Product Features

1.3 Exterior and Interfaces

Fig. 1-2 Solar panel output characteristic curve

Fig. 1-3 Relation between solar panel output characteristics and illumination

Fig. 1-4 Relation between solar panel output characteristics and temperature

1.5 Charging Stage Introductions

Fig. 1-5 SLD Battery charging stages diagram Fig. 1-6 LI Battery charging stages diagram

a) Fast charging

2. PRODUCT INSTALLATION

2.1 Installation Precautions

Fig. 2.1 Installation and heat dissipation

Step 4: the wire

3. PRODUCT OPERATION AND DISPLAY

3.1 LED Indicators

3.3 LCD Startup and Main Interface

3.3.1 Startup interface

3.4.3 Manual load on/off page

Manual operation is effective only when the load mode is manual mode (15), and tap the Set key to switch on/off the load under any main interface.

3.5 System Parameter Settings

4.3 Abnormality Display and Warning

6.1 24V System Conversion

MPPT 24V conversion efficiency (24V battery)

7. PRODUCT DIMENSIONS

ML2420

Product dimensions: 210*151*59.5mm

Hole positions: 154*131mm

Hole diameter: Φ3mm

Applicable wire: max. 8 AWG

8. APP CONTROL FUNCTION

Unit 5 Albert Edward House, The

Pavilions Preston, United Kingdom

Made in China

VEVOR®

TOUGH TOOLS, HALF PRICE

ML MAXIMUM POWER POINT TRACKING (MPPT) SERIES

ML2420 SOLAR CHARGE AND DISCHARGE CONTROLLER

OPERATING INSTRUCTIONS

We continue to be committed to provide you tools with competitive price. "Save Half", "Half Price" or any other similar expressions used by us only represent savings you might benefit from buying certain tools with us compared to top brands and does not necessarily mean to cover all categories of tools offered. We kindly remind you to verify carefully when placing an order with us to ensure you are actually saving half in comparison with the top major brands.

VEVOR®

TOUGH TOOLS, HALF PRICE

ML MAXIMUM POWER POINT TRACKING (MPPT)

MODEL: ML2420

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

Technical Support and E-Warranty Certificate www.vevor.com/support

This is the original instruction, please read all manual instruction carefully before operating. VEVOR reserves a clear interpretation user manual. The appearance of the product shall be subject to product you received. Please forgive us that we won't inform you there are any technology or software updates on our product.

1. PRODUCT INTRODUCTION

1.1 Product Overview

1.2 Product Features

1.3 Exterior and Interfaces

Fig. 1-2 Solar panel output characteristic curve

Fig. 1-3 Relation between solar panel output characteristics and illumination

Fig. 1-4 Relation between solar panel output characteristics and temperature

1.5 Charging Stage Introductions

Fig. 1-5 SLD Battery charging stages diagram Fig. 1-6 LI Battery charging stages diagram

a) Fast charging

2. PRODUCT INSTALLATION

2.1 Installation Precautions

Fig. 2.1 Installation and heat dissipation

Step 4: Wire

3. PRODUCT OPERATION AND DISPLAY

3.1 LED Indicators

3.3 LCD Startup and Main Interface

3.3.1 Startup interface

3.4.3 Manual load on/off page

Manual operation is effective only when the load mode is manual mode (15), and tap the Set key to switch on/off the load under any main interface.

3.5 System Parameter Settings

4.3 Abnormality Display and Warnings

6.1 24V System Conversion

MPPT 24V conversion efficiency (24V battery)

7. PRODUCT DIMENSIONS

ML2420

Product dimensions: 210*151*59.5mm

Hole positions: 154*131mm

Hole diameter: Φ3mm

Applicable wire: max. 8 AWG

8. APP CONTROL FUNCTION

Unit 5 Albert Edward House, The

Pavilions Preston, United Kingdom

We continue to be committed to provide you tools with competitive price. "Save Half", "Half Price" or any other similar expressions used by us only represent of savings you might benefit from buying certain tools with us compared top brands and does not necessarily mean to cover all categories of tools offered are kindly reminded to verify carefully when you are placing an order with us actually saving half in comparison with the top major brands.

VEVOR®

TOUGH TOOLS, HALF PRICE

ML MAXIMUM POWER POINT TRACKING (MPPT

MODELLO:ML2420

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

Technical Support and E-Warranty Certificate www.vevor.com/support

This is the original instruction, please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of the user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you of any technology or software updates on our product.

1. PRODUCT INTRODUCTION

1.1 Product Overview

1.2 Product Features

1.3 Exterior and Interfaces

Fig. 1-2 Solar panel output characteristic curve

Fig. 1-3 Relation between solar panel output characteristics and illumination

Fig. 1-4 Relation between solar panel output characteristics and temperature

1.5 Charging Stage Introductions

Fig. 1-5 SLD Battery charging stages diagram Fig. 1-6 LI Battery charging stages diagram

a) Fast charging

2. PRODUCT INSTALLATION

2.1 Installation Precaution

2.3 Installation and Wiring

Fig. 2.1 Installation and heat dissipation

Phase 4: wire

3. PRODUCT OPERATION AND DISPLAY

3.1 LED Indicators

3.3 LCD Startup and Main Interface

3.3.1 Startup interface

3.4 Load Mode Setting Interface

3.4.3 Manual load on/off page

Manual operation is effective only when the load mode is manual mode (15), and tap the Set key to switch on/off the load under any main interface.

3.5 System Parameter Settings

4.3 Abnormality Display and Warnings

6.1 24V System Conversion

MPPT 24V conversion efficiency (24V battery)

7. PRODUCT DIMENSIONS

ML2420

Product dimensions: 210*151*59.5mm

Hole positions: 154*131mm

Hole diameter: Φ3mm

Applicable wire: max. 8 AWG

8. APP CONTROL FUNCTION

Imported in AUS: SIHAO PTY LTD, 1 ROKEVA STREETEASTWOOD NSW 2122 Australia

Imported in USA: Sanven Technology Ltd, Suite 250, 9166 Anaheim Place, Rancho Cucamonga, CA 91730

EC

REP

SHUNSHUN GmbH

Römeräcker 9 Z2021, 76351

Unit 5 Albert Edward House, The

Pavilions Preston, United Kingdom

Made in China

VEVOR®

TOUGH TOOLS, HALF PRICE

We continue to be committed to provide you tools with competitive price. "Save Half", "Half Price" or any other similar expressions used by us only represent of savings you might benefit from buying certain tools with us compared top brands and does not necessarily mean to cover all categories of tools offered are kindly reminded to verify carefully when you are placing an order with us actually saving half in comparison with the top major brands.

VEVOR®

TOUGH TOOLS, HALF PRICE

ML MAXIMUM POWER POINT TRACKING (MPPT)

MODEL: ML2420

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

Technical Support and E-Warranty Certificate www.vevor.com/support

This is the original instruction. Please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of the user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you of any technology or software updates on our product.

1. PRODUCT INTRODUCTION

1.1 Product Overview

1.2 Product Features

1.3 Exterior and Interfaces

Fig. 1-2 Solar panel output characteristic curve

Fig. 1-3 Relation between solar panel output characteristics and illumination

Fig. 1-4 Relation between solar panel output characteristics and temperature

1.5 Charging Stage Introductions

Fig. 1-5 SLD Battery charging stages diagram Fig. 1-6 LI Battery charging stages diagram

a) Fast charging

2. PRODUCT INSTALLATION

2.1 Installation Precaution

2.3 Installation and Wiring

Fig. 2.1 Installation and heat dissipation

Step 4: wiring

3. PRODUCT OPERATION AND DISPLAY

3.1 LED Indicators

3.3 LCD Startup and Main Interface

3.3.1 Startup interface

3.4.3 Manual load on/off page

Manual operation is effective only when the load mode is manual mode (15), and tap the Set key to switch on/off the load under any main interface.

3.5 System Parameter Settings

4.3 Abnormality Display and Warning

6.1 24V System Conversion

MPPT 24V conversion efficiency (24V battery)

7. PRODUCT DIMENSIONS

ML2420

Product dimensions: 210*151*59.5mm

Hole positions: 154*131mm

Hole diameter: Φ3mm

Applicable wire: max. 8 AWG

8. APP CONTROL FUNCTION

Imported to AUS: SIHAO PTY LTD, 1 ROKEVA STREETEASTWOOD NSW 2122 Australia

Imported to USA: Sanven Technology Ltd, Suite 250, 9166 Anah Place, Rancho Cucamonga, CA 91730

EC

REP

SHUNSHUN GmbH

Römeräcker 9 Z2021, 76351

Unit 5 Albert Edward House, The

Pavilions Preston, United Kingdom

Made in China

VEVOR®

TOUGH TOOLS, HALF PRICE

We continue to be committed to providing you with tools at competitive prices. "Save Half", "Half Price", or any other similar expressions used by us only represent the savings you might benefit from buying certain tools with us compared to top brands and do not necessarily mean to cover all categories of tools offered. We kindly remind you to verify carefully when placing an order with us that you are actually saving half in comparison with the top major brands.

VEVOR®

TOUGH TOOLS, HALF PRICE

ML MAXIMUM POWER POINT TRACKING (MPPT)

MODEL: ML2420

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

Technical Support and E-Warranty Certificate www.vevor.com/support

This is the original instruction. Please read all manual instructions carefully before operating. VEVOR reserves the right to interpret the user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you of any technology or software updates on our product.

1. PRODUCT INTRODUCTION

1.1 Product Overview

1.2 Product Features

1.3 Exterior and Interfaces

Fig. 1-2 Solar panel output characteristic curve

Fig. 1-3 Relation between solar panel output characteristics and illumination

Fig. 1-4 Relation between solar panel output characteristics and temperature

1.5 Charging Stage Introductions

Fig. 1-5 SLD Battery charging stages diagram Fig. 1-6 LI Battery charging stages diagram

2. PRODUCT INSTALLATION

2.1 Installation Precautions

Fig. 2.1 Installation and heat dissipation

3. PRODUCT OPERATION AND DISPLAY

3.1 LED Indicators

3.3 LCD Startup and Main Interface

3.3.1 Startup interface

3.4.3 Manual load on/off page

Manual operation is effective only when the load mode is manual mode (15), and tap the Set key to switch on/off the load under any main interface.

3.5 System Parameter Settings

4.3 Abnormality Display and Warnings

6.1 24V System Conversion

MPPT 24V conversion efficiency (24V battery)

7. PRODUCT DIMENSIONS

ML2420

Product dimensions: 210*151*59.5mm

Hole positions: 154*131mm

Hole diameter: Φ3mm

Applicable wire: max. 8 AWG

8. APP CONTROL FUNCTION

STREET EASTWOOD NSW 2122 Australia

Imported to USA: Sanven Technology Ltd, Suite 250, 9166 Anar Place, Rancho Cucamonga, CA 91730

EC

REP

SHUNSHUN GmbH

Römeräcker 9 Z2021, 76351

Unit 5 Albert Edward House, The

Pavilions Preston, United Kingdom

ML MAXIMUM POWER POINT TRACKING (MPPT) SERIES

We continue to be committed to providing you with tools at competitive prices. "Save Half", "Half Price", or any other similar expressions used by us only represent the savings you might benefit from buying certain tools with us compared to top brands and do not necessarily mean that all categories of tools offered are covered. We kindly remind you to verify carefully when placing an order with us that you are actually saving half in comparison with the top major brands.

VEVOR®

TOUGH TOOLS, HALF PRICE

ML MAXIMUM POWER POINT TRACKING (MPPT)

MODEL: ML2420

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

Technical Support and E-Warranty Certificate www.vevor.com/support

This is the original instruction. Please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of the user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you of any technology or software updates on our product.

1. PRODUCT INTRODUCTION

1.1 Product Overview

1.2 Product Features

1.3 Exterior and Interfaces

Fig. 1-2 Solar panel output characteristic curve

Fig. 1-3 Relation between solar panel output characteristics and illumination

Fig. 1-4 Relation between solar panel output characteristics and temperature

1.5 Charging Stage Introductions

Fig. 1-5 SLD Battery charging stages diagram Fig. 1-6 LI Battery charging stages diagram

a) Fast charging

2. PRODUCT INSTALLATION

2.1 Installation Precautions

2.3 Installation and Wiring

Fig. 2.1 Installation and heat dissipation

Step 4: wire

3. PRODUCT OPERATION AND DISPLAY

3.1 LED Indicators

		PV reeks indicat	Indiceren de controller ' s huidig opladen modus .
		KNUPPEL indicator	Indiceren de batterij ' s huidig staat .
		LADEN indicator	Indiceren de ladingen ' Aan / Uit En staat .
		FOUT indicator	Indiceren of de regelaar is functioneren normaal gesproken .

PV-array-indicator:

3.3 LCD Startup and Main Interface

3.3.1 Startup interface

3.4 Load Mode Setting Interface

3.4.1 Introduction to load modes

3.4.3 Manual load on/off page

Manual operation is effective only when the load mode is manual mode (15), and tap the Set key to switch on/off the load under any main interface.

3.5 System Parameter Settings

4.3 Abnormality Display and Warnings

6.1 24V System Conversion

MPPT 24V conversion efficiency (24V battery)

7. PRODUCT DIMENSIONS

ML2420

Product dimensions: 210*151*59.5mm

Hole positions: 154*131mm

Hole diameter: Φ3mm

Applicable wire: max. 8 AWG

8. APP CONTROL FUNCTION

Anaheim Place, Rancho Cucamonga, CA 91730

EC

REP

SHUNSHUN GmbH

Römeräcker 9 Z2021, 76351

Unit 5 Albert Edward House, The

Pavilions Preston, United Kingdom

Made in China

VEVOR®

TOUGH TOOLS, HALF PRICE

Technical Support and E-warranty Certificate www.vevor.com/support

VEVOR®

TOUGH TOOLS, HALF PRICE

ML MAXIMUM POWER POINT TRACKING (MPPT) SERIES

ML2420 SOLAR CHARGE AND DISCHARGE CONTROLLER

USER MANUAL

We continue to be committed to provide you tools with competitive price. "Save Half", "Half Price" or any other similar expressions used by us only represent savings you might benefit from buying certain tools with us compared to top brands and does not necessarily mean to cover all categories of tools offered. We kindly remind you to verify carefully when you are placing an order with us to ensure you are actually saving half in comparison with the top major brands.

VEVOR®

TOUGH TOOLS, HALF PRICE

ML MAXIMUM POWER POINT TRACKING (MPPT)

MODEL: ML2420

NEED HELP? CONTACT US!

Have product questions? Need technical support? Please feel free to contact us:

Technical Support and E-Warranty Certificate www.vevor.com/support

This is the original instruction. Please read all manual instructions carefully before operating. VEVOR reserves a clear interpretation of the user manual. The appearance of the product shall be subject to the product you received. Please forgive us that we won't inform you if there are any technology or software updates on our product.

1. PRODUCT INTRODUCTION

1.1 Product Overview

1.2 Product Features

1.3 Exterior and Interfaces

Fig. 1-2 Solar panel output characteristic curve

Fig. 1-3 Relation between solar panel output characteristics and illumination

Fig. 1-4 Relation between solar panel output characteristics and temperature

1.5 Charging Stage Introductions

Fig. 1-5 SLD Battery charging stages diagram Fig. 1-6 LI Battery charging stages diagram

a) Fast charging

2. PRODUCT INSTALLATION

2.1 Installation Precautions

2.3 Installation and Wiring

Warning: risk of explosion! Never install

Fig. 2.1 Installation and heat dissipation

Step 1: choose installation location

Step 4: wiring

3. PRODUCT OPERATION AND DISPLAY

3.1 LED Indicators

3.3 LCD Startup and Main Interface

3.3.1 Startup Interface

3.4.3 Manual Load On/Off Page

Manual operation is effective only when the load mode is manual mode (15), and tap the Set key to switch on/off the load under any main interface.

3.5 System Parameter Settings

Classification: IP32

4.3 Abnormality Display and Warnings

6.1 24V System Conversion

7. PRODUCT DIMENSIONS

ML2420

Product dimensions: 210*151*59.5mm

Hole positions: 154*131mm

Hole diameter: Φ3mm

Applicable wire: max. 8 AWG

8. APP CONTROL FUNCTION

Unit 5 Albert Edward House, The

Pavilions Preston, United Kingdom

Made in China

VEVOR®

TOUGH TOOLS, HALF PRICE