MT BCB2520 - Battery charger DOMETIC - Free user manual and instructions

USER MANUAL MT BCB2520 DOMETIC

Technical line drawing of an electronic device casing with mounting holes and internal components (no text or symbols)

MT BCB25/20 IU0U

Battery control booster

Installation and Operating Manual.....11

Batterie-Control-Booster

© 2022 Dometic Group. The visual appearance of the contents of this manual is protected by copyright and design law. The underlying technical design and the products contained herein may be protected by design, patent or be patent pending. The trademarks mentioned in this manual belong to Dometic Sweden AB. All rights are reserved.

1

Exploded view diagram of an electronic device with numbered components and wiring labels

2

54321876

3 2 Current Bott. I Battery full Main Charging Display On/Off 1

4 100 mm 100 mm

5 ✓ ✓ ✓ ✓ ✓ ✓ ✓

7

8

9

10

11

2. 90° 1. 3.

12

i 5 m 1. 2.3 5 m 4. 5 m

13 A 12 V Start Com. Bord Netz D+ TR Temp. Sensor T T rD bk rd 1 D+ ≥40A ≥30A - + - 2

	EN DE FR	IT NL DA SV NO
rd Red Rot	Rouge Rosso	Rood Rød Rød Rød
bk Black	Schwarz Noir	Nero Zwart Sort	Svart Svart

14 B 12 V Start Com. Bord Netz D+ TR Temp. Sensor T T LDP/PGI D+ LDP/PGI Load/Acc DCM-1 DCM-2 D+ rd bk rd 1 D+ 3 ≥40A ≥30A - + - 2

	EN DE FR	IT NL DA SV NO
rd Red Rot	Rouge Rosso	Rood Rød Rød Rød
bk Black	Schwarz Noir	Nero Zwart Sort	Svart Svart

15 C 12 V Start Com. Bord + - + Netz D+ TR Temp. Sensor T T D+ D+ +B1 3 +B2 bk rd vt 4 5 bu 87a ye bk 87 og 6 ≥40A ≥30A - + 2

	EN DE FR	IT NL DA SV NO
rd Red Rot	Rouge Rosso	Rood Rød Rød Rød
bk Black	Schwarz Noir	Nero Zwart Sort	Svart Svart
vt	Violet	Violett	Violeta	Violetto	Paars	Violet	Violett	Fiolett
ye	Yellow	Gelb	Jaune	Giallo	Geel	Gul	Gul	Gul
og	Orange	Orange	Orange	Arancione	Oranje	Orange	Orange	Oransje
bu	Blue	Blau	Bleu	Blu	Blauw	Blå	Blå	Blå

16

270 74 223

EN

Please read these instructions carefully and follow all instructions, guidelines, and warnings included in this product manual in order to ensure that you install, use, and maintain the product properly at all times. These instructions MUST stay with this product.

By using the product, you hereby confirm that you have read all instructions, guidelines, and warnings carefully and that you understand and agree to abide by the terms and conditions as set forth herein. You agree to use this product only for the intended purpose and application and in accordance with the instructions, guidelines, and warnings as set forth in this product manual as well as in accordance with all applicable laws and regulations. A failure to read and follow the instructions and warnings set forth herein may result in an injury to yourself and others, damage to your product or damage to other property in the vicinity. This product manual, including the instructions, guidelines, and warnings, and related documentation, may be subject to changes and updates. For up-to-date product information, please visit documents.dometic.com.

Contents

Explanation of symbols ..... 11

Safety instructions ..... 11

Scope of delivery....14

Accessories 14

Intended use ....14

Technical description .....15

Mounting the battery control booster .....18

Connecting the battery control booster.....18

Operation....21

Cleaning and maintenance 23

Troubleshooting 24

Warranty.... 25

Disposal 26

Technical data 26

Explanation of symbols

DANGER!

Safety instruction: Indicates a hazardous situation that, if not avoided, will result in death or serious injury.

WARNING!

Safety instruction: Indicates a hazardous situation that, if not avoided, could result in death or serious injury.

CAUTION!

Safety instruction: Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.

NOTICE!

Indicates a situation that, if not avoided, can result in property damage.

NOTE

Supplementary information for operating the product.

Safety instructions

Also observe the safety instructions and stipulations issued by the vehicle manufacturer and authorized workshops.

General safety

WARNING! Failure to obey these warnings could result in death or serious injury.

Electrocution hazard

• Installation and removal of the battery charger may only be carried out by qualified personnel.
- Do not operate the device if it is visibly damaged.
- If this device's power cable is damaged, the power cable must be replaced by the manufacturer, a service agent or a similarly qualified person in order to prevent safety hazards.
- This device may only be repaired by qualified personnel. Improper repairs can lead to considerable hazards.
- If you disassemble the device:
- Detach all connections.
- Ensure that no voltage is present on any of the inputs and outputs.
- Do not use the device in wet conditions or submerge in any liquid. Store in a dry place.
- Only use accessories that are recommended by the manufacturer.
- Do not modify or adapt any of the components in any way.

• Disconnect the device from the power supply:
  – Before each cleaning and maintenance
• After every use
  – Before changing a fuse
  – Before carrying out electrical welding work or work on the electrical system

Health hazard

- This device can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the device in a safe way and understand the hazards involved.

• Electrical devices are not toys.

Always keep and use the device out of the reach of very young children.

• Children must be supervised to ensure that they do not play with the device.

- Cleaning and user maintenance shall not be made by children without supervision.

NOTICE! Damage hazard

• Before start-up, check that the voltage specification on the data plate is the same as that of the power supply.
• Ensure that other objects cannot cause a short circuit at the contacts of the device.
• Ensure that the negative and positive poles never come into contact.

Installing the device safely

DANGER! Failure to obey these warnings will result in death or serious injury.

Explosion hazard

- Never mount the device in areas where there is a risk of gas or dust explosion.

CAUTION! Failure to obey these cau-tions could result in minor or moderate injury.

Risk of injury

• Ensure that the device is standing firmly. The device must be set up and fastened in such a way that it cannot tip over or fall down.
• When positioning the device, ensure that all cables are suitably secured to avoid any form of trip hazard.

NOTICE! Damage hazard

• Do not place the battery charger near heat sources (heaters, direct sunlight, gas ovens, etc.).
• Set up the device in a dry location where it is protected against splashing water.

Safety when connecting the device electrically

DANGER! Failure to obey these warnings will result in death or serious injury.

Electrocution hazard

- For installation on boats:

If electrical devices are incorrectly installed on boats, corrosion damage might occur. Have the device installed by a specialist (marine electrician).

- If you are working on electrical systems, ensure that there is somebody close at hand who can help you in emergencies.

WARNING! Failure to obey these warnings could result in death or serious injury.

Electrocution hazard

• Observe the recommended cable cross-sections.
• Lay the cables so that they cannot be damaged by the doors or the hood.
  Crushed cables can lead to serious injury.

NOTICE! Damage hazard

• Use ductwork or cable ducts if it is necessary to lay cables through metal panels or other panels with sharp edges.
• Do not lay the 230 V mains cable and the 12 V DC cable in the same duct.
• Do not lay the cable so that it is loose or heavily kinked.
• Fasten the cables securely.
• Do not pull on the cables.

Operating the device safely

DANGER! Failure to obey these warnings will result in death or serious injury.

Electrocution hazard

• Do not touch exposed cables with your bare hands. This applies especially when operating the device from the AC mains.
• To be able to disconnect the device quickly from the AC power supply, the socket must be close to the device and be easily accessible.

WARNING! Failure to obey these warnings could result in death or serious injury.

Explosion hazard

- Only use the device in closed, well-ventilated rooms.

CAUTION! Failure to obey these cau-tions could result in minor or moderate injury.

Explosion hazard

• Do not operate the device under the following conditions:
  – In salty, wet or damp environments
  – In the vicinity of corrosive fumes
  – In the vicinity of combustible materials
  – In areas where there is a danger of explosions

Electrocution hazard

• Before starting the device, ensure that the power supply line and the plug are dry and the plug is free from rust or dirt.
  • Always disconnect the power supply when working on the device.
• Observe that parts of the device may still conduct voltage even if the fuse has blown.
• Do not disconnect any cables when the device is still in use.

NOTICE! Damage hazard

• Ensure that the air inlets and outlets of the device are not covered.
• Ensure a good ventilation.
• Never pull the plug out of the socket by the connection cable.
• The device shall not to be exposed to rain.

Safety precautions when handling batteries

WARNING! Failure to obey these warnings could result in death or serious injury.

Risk of injury

• Batteries contain aggressive and caustic acids. Avoid battery fluid coming into contact with your body. If your skin does come into contact with battery fluid, wash that part of your body thoroughly with water.
  If you sustain any injuries from acids, contact a doctor immediately.

CAUTION! Failure to obey these cau-tions could result in minor or moderate injury.

Risk of injury

• When working on batteries, do not wear any metal objects such as watches or rings.
  Lead acid batteries can cause short circuits which can cause serious injuries.
• Wear goggles and protective clothing when you work on batteries. Do not touch your eyes when you are working on batteries.

Explosion hazard

• Never attempt to charge a frozen or defective battery.
  Place the battery in a frost-free area and wait until the battery has acclimatised to the ambient temperature. Then start the charging process.
• Do not smoke, use an open flame, or cause sparking near the engine or a battery.

NOTICE! Damage hazard

• Only use rechargeable batteries.
• Prevent any metal parts from falling on the battery. This can cause sparks or short-circuit the battery and other electrical parts.
• Ensure that the polarity is correct when connecting the battery.
• Follow the instructions of the battery manufacturer and those of the manufacturer of the system or vehicle in which the battery is used.

• If you need to remove the battery, first disconnect the ground connection. Disconnect all connections and all consumers from the battery before removing it.

• Only store fully charged batteries. Recharge stored batteries regularly.

• Immediately recharge deeply discharged lead batteries to avoid sulfation.
• Check the acid level for open lead-acid batteries regularly.

Safety precautions when handling lithium batteries

CAUTION! Failure to obey these cau-tions could result in minor or moderate injury.

Risk of injury

- Only use batteries with integrated battery management system and cell balancing.

NOTICE! Damage hazard

• Only install the battery in environments with an ambient temperature of at least 0^ .
• Avoid deep discharge of the batteries.

Scope of delivery

Quantity Description
1	M	T	B	C	B
1 Load relay (NC 12 V/ 100 A) with installation cable set
1 Temperature sensor with cable (3 m)
1 Extension cable (5 m) with adapter for display panel used for remote control
1 Installation and Operating manual

Accessories

Available as accessories (not included in the scope of delivery):

Designation Ref. No.

D+ Active simulator 9620000336 (MT 02159)

Intended use

The battery charger (also referred to as battery control booster) is intended to charge 12 V house batteries in vehicles while driving and on the mains. In addition, the device can be used as a stable power supply for consumers to keep the batteries fully charged. When no charging source is available, the pulsing operation ensures reconditioning of lead-acid batteries.

The battery control booster is intended to be used to charge the following battery types:

• Lead acid batteries
• Lead gel batteries
  • Absorbed glass mat (AGM) batteries
• LiFePO4 batteries

The battery control booster is not intended to be used to charge other types of batteries (eg. NiCd, NiMH, etc.).

The battery control booster is suitable for:

• Installation in recreational vehicles (RV) and motor homes
• Stationary or mobile use
- Indgor use/ 2 0

The battery control booster is not suitable for:

- Outdoor use

This product is only suitable for the intended purpose and application in accordance with these instructions.

This manual provides information that is necessary for proper installation and/or operation of the product. Poor installation and/or improper operating or maintenance will result in unsatisfactory performance and a possible failure.

The manufacturer accepts no liability for any injury or damage to the product resulting from:

• Incorrect assembly or connection, including excess voltage
• Incorrect maintenance or use of spare parts other than original spare parts provided by the manufacturer
  • Alterations to the product without express permission from the manufacturer

- Use for purposes other than those described in this manual

Dometic reserves the right to change product appearance and product specifications.

Technical description

General description

The device charges with 20 A at the 230 V mains and 25 A while driving.

If neither of these charging sources is available, the integrated pulser takes care of battery maintenance.

The battery control booster has 3 operating modes:

• Mains operation: Charging of the house battery, trickle charging of the starting battery and supply of 12 V appliances from the 230 V mains.
• Booster operation: Charging of the house battery by the alternator via starting battery while driving.
• Pulsing operation: The pulser can be activated when no charging source is available to protect the battery from sulfation.

The battery control booster offers the following functions:

• Microprocessor-controlled, temperature-compensated IUOU charging programs for various battery types
  • Auxiliary charging output for the starting battery
• Buffer operation: Compliance with the charging characteristics even when the battery is charged with consumers connected
• On-board mains suppression filter: Ensures parallel operation of the battery control booster with other charging sources, for example mains supply chargers or generators
  • Automatic compensation of voltage loss caused by the charging cable length (house battery)

The battery control booster has the following protective mechanisms:

• High voltage shutdown
- Low voltage shutdown

• High temperature protection
- Low temperature protection (only LiFePO4 batteries)
• Protection against short circuit
- Reverse polarity protection (only for house battery connection)

The battery control booster can be adapted to different battery types via DIP switches (see chapter "Setting the charging program" on page 21).

The temperature sensor monitors the battery temperature during the charging process (see chapter "Temperature sensor" on page 18).

The battery control booster is equipped with a removable display panel for remote control.

Description of the device

No in

fig. 1,

page 3

Designation

1 Connection cable

2 D i s p l a y p
3 D I P s w i t c
4 Connections and controls
5 Rubber feet
6 Temperature sensor
7 Extension cable (5 m) with adapter for display panel used for remote control
8 Wire harness with distribution block and load relay (normally closed, 12 V/100 A)

Connections and controls

No in

fig. 2,

Designation Description

page 3

1 DIP switches Setting of the charging program (see chapter "Setting the charging program" on page 21) and other functions
2 T T terminal 2 connections for temperature sensor

No in

fig. 2, Designation Description page 3

3 TR terminal Output for controlling anormally open relay NO(connection variant D) or anormally closed relay NC(connection variant C1)

4 D+ terminal Input for D+ signal of thealternator or ignition locksignal (terminal 15)

5 Netz terminal Output for 12 V signalwhen connected to mains(max. 100 mA)

6 BORD+ Connection to positivepole of 12 V house battery

7 COM- Connection to negativepole of the house bat-tery/chassis

8 START+ Connection to positivepole of 12 V starting bat-tery

Display panel

No in fig. 3, Designation page 4
1 On/Off button
2	l	n	d	i	c	a	t

LED indicator on display panel

LED Status Description
Current(red)	On Charging currentpresent; mains or booster charging mode; brightness indicates the intensity of the charging current
	Off Charging current<0.2 A
Batt. I(yellow)	On House battery is charged in mains or booster charging mode
	Flashing slowly • High temperature protection• Only LiFePO4 batteries: Low temperature protection
	Flashing quickly Only LiFePO4 batteries: Low temperature protection
	Off No charging
Battery full(green)	On House battery fully charged (100 %); U2/U3 phase
r L	E Flashing s Charging process in U1 phase (lead batteries: <75 %, LiFePO4 batteries:<90 %)
	Flashing slowly State of charge75 – 100 % (lead batteries: >75 %, LiFePO4 batteries: >90 %)

LED Status Description

Main Charging (yellow)	On	Charging in I/U1 phase
	Flashing • Over voltage protection• Only Li F batteries: Temperature sensor is not connected
Batt. II (yellow)	On	Booster mode; starting battery charges the house battery
	Off Booster charging not activated
Power (green)	On Voltage present; mains or booster charging mode
	Flashing slowly Safety shutdown (chapter “Troubleshooting” on page 24)
	Flashing in 20 s interval	Pulsing operation mode

Battery charging function

A main charging cycle of the house battery is initiated in the following situations:

• After a standstill of the alternator or mains failure
• After falling below the reset voltage of 12.75 V for lead batteries or 13.10 V for LiFePO4 batteries for 30 s

NOTE

In all charging phases (U1 phase to U3 phase), almost the entire possible charging current is available for the additional supply of DC loads without discharging the battery.

The charging characteristics for automated, continuous operation without monitoring are referred to as modified IU0U characteristics (see charging curve in fig. 6, page 5).

1: Analysis phase

The battery is deeply discharged (>10%). The battery charge is analyzed with increasing charging current.

2: I phase (Constant current phase)

At the beginning of the charging process, the empty battery is constantly charged with the maximum charging current (100%). The charging current decreases when the battery has reached a state of charge of 75% (90% for LiFePO4 batteries). Batteries with a voltage of 0 V are charged with reduced charging current until the battery voltage exceeds 9 V.

The duration of the I phase depends on the state of the battery, the load from the consumers and the state of charge. For safety reasons the I phase is terminated after a maximum of 15 h (in case of battery cell defects or similar).

3: U1 phase (Constant voltage phase)

The U1 phase starts when the battery is fully loaded. The charging current is reduced. During the U1 phase, the battery voltage is kept constant at a high level. The duration of the U1 phase depends on the battery type and the depth of discharge.

4: U2 phase (Trickle charging)

The U2 phase serves to maintain the battery capacity (100%). The U2 phase runs at lowered charging voltage and variable current. If DC loads are connected, they are powered by the device. Only if the power required exceeds the capacity of the device is this surplus power provided by the battery. The battery is then discharged until the device re-enters the I phase and charges the battery. The U2 phase is limited to between 24 and 48 h depending on the battery type.

5: U3 phase (Storage charging)

In long-term mains operation, the U3 phase prevents further discharge of the battery (e.g. during long breaks in use, seasonal operation or during winter storage), minimizes battery gassing and prevents plate corrosion.

6: Reconditioning

Twice a week, the charger switches back to the U1 phase for a short time (max. 1 h) in order to revive the battery. This prevents any fatigue phenomena such as sulfation or electrolyte stratification.

Temperature sensor

With the temperature sensor connected, the battery control booster adjusts the charging voltage (for lead batteries) or the charging current (for LiFePO4 batteries) according to the measured temperature at the battery.

NOTE

• For lead batteries: Without temperature sensor connected, the charging voltage is referenced to 20 °C.
• For LiFePO4 batteries: Without temperature sensor connected, the battery control booster does not work.

The charging characteristics are adjusted as follows:

• For lead acid batteries see fig. 7, page 5
• For AGM batteries see fig. 8, page 5
• For lead gel batteries see fig. 9, page 5
• For LiFePO4 batteries see fig. 10, page 5

Legend

	Charging curve without temperature sensor connected
	Charging curve with temperature sensor connected

Mounting the battery control booster

Installation location

NOTICE! Damage hazard

Before drilling any holes, make sure that no electrical cables or other parts of the vehicle can be damaged by drilling, sawing and filing.

NOTE

The battery control booster can be installed lying as well as hanging (fig. 5, page 4).

Observe the following instructions when selecting an installation location:

• Ensure that the mounting surface is solid and level.
• Observe the distance specifications (fig. 4, page 4).

Using the display panel

The display panel can be mounted depending on the installation position of the battery control booster.

▶To rotate and reinsert the display panel in place proceed as shown (fig. 11, page 6).
▶ To use the display panel as a remote control proceed as shown (fig. 12, page 6).

Connecting the battery control booster

The electrical power supply must be connected by a qualified electrician who has demonstrated skill and knowledge related to the construction and operation of electrical equipment and installations and has received safety training to identify and avoid the hazards involved.

WARNING! Electrocution hazard

Observe the recommended cable cross-sections, cable lengths and fuse (see table on page 19).

CAUTION! Fire hazard

Place the fuses near the batteries to protect the cable from short circuits and possible burning.

NOTICE! Damage hazard

Do not reverse the polarity.

NOTE

For Dometic Büttner LiFePO4 batteries: To ensure measuring the internal temperature of the LiFePO4 battery use the temperature sensor connector to connect the probe of the temperature sensor to the negative terminal of the house battery.

Observe the following instructions when connecting the battery control booster:

- Select the appropriate connection variant.

Legend

House battery

Starting battery

• Always connect the battery control booster before connecting the batteries.
- Do not use ferrules. Strip the cable ends as follows:

• Signal cable 9 mm (0.75 - 1.5 mm ^2 )
• Charging cable 12 mm

▶Determine the cable cross-section:

Cable cross-section	Cable length START+ BORD+	Cable length COM- to house battery
4 mm2-0.5-2.0 m
6 mm2	<5.5 m	1.5-3.5 m
10 mm2	<9.0 m	3.0-6.0 m

Connection variant A (fig. 13, page 7)

Connection variant for vehicles that are to be equipped with a house battery and charging device.

• The maximum charging current while driving is 25 A.
• When connected to the mains, the current for charging the house battery and trickle charging the starting battery is limited to 1 A.

NOTE

• If the battery control booster is activated via terminal 15, the starting battery can be discharged when the ignition is switched on and the engine is not running. Use a D+ active simulator if no D+ signal is available.

• The load relay (NC 12 V/ 100 A) with installation cable set is not required.

• Slide the DIP switch (fig. 2 1, page 3) to the position "D+".

• To connect the battery control booster proceed as shown in fig. 13, page 7.

No in fig. 13, Description page 7

1 Ground (chassis) or negative terminal of the house battery
2 Temperature sensor probe

Connection variant B (fig. 14, page 8)

Connection variant for vehicles with a cutoff relay present.

• If connected consumers draw a higher current than 25 A from the house battery (e.g. air-conditioning operation while driving) the cutoff relay remains closed to enable charging currents higher than 25 A. After falling below this current, the relay is opened.
• For LiFePO4 batteries: The cutoff relay remains opened if the temperature reaches < 0^ C or >50^ C .
• When connected to the mains, the current for charging the house battery and trickle charging the starting battery is limited to 1 A.

NOTE

The load relay (NC 12 V/100 A) with installation cable set is not required.

1. Slide the DIP switch (fig. 2 1, page 3) to the position "D+".
2. Connect the cutoff relay to the TR terminal.
3. To connect the battery control booster proceed as shown in fig. 14, page 8.

No in

fig. 14, Description

page 8

1 Ground (chassis) or negative terminal of the house battery

2 Temperature sensor probe

3 Cutoff relay (normally open relay/NO)

Connection variant C (fig. 15, page 9)

Connection variant for motor homes with existing central electrical system.

• The load relay is controlled via the TR terminal. After the engine started, the relay remains closed and allows charging currents of more than 25 A. When falling below this current the battery control booster opens the load relay and takes over the charging process.
• For LiFePO4 batteries: The load relay is activated via the TR terminal in accordance with the temperature to ensure the controlled charging of the house battery at extreme temperatures (<0 °C and >50 °C).
  The integrated cutoff relay remains opened if the temperature reaches <0 ^ or >50 ^ .
• When connected to the mains only the house battery is charged. Simultaneous trickle charging of the starting battery with a maximum of 1 A is only available if the central electric system provides an auxiliary charging output for the starting battery.

NOTE

• In mains operation, the charging currents of the integrated charger and the battery control booster are added up.
• For LiFePO4 batteries: Disable the integrated charger if it is not equipped with temperature-controlled charging and the charging characteristic for LiFePO4 batteries.

• For LiFePO4 batteries: Temperature-controlled charging only works if the originally integrated charger also features temperature compensation.

• Slide the DIP switch (fig. 2 1, page 3) to the "V" position.

• Disconnect the existing cable between the house battery and the central electrical system at a suitable point. Connect the two cable ends to the distribution block.

• Choose a suitable location for the load relay holder considering the cable length of the wiring harness.

• Insert the load relay into the load relay holder.

• To connect the battery control booster, the load relay and the distribution block proceed as shown in fig. 15, page 9.

No in

fig. 15, Description

page 9

1 Ground (chassis) or negative terminal of the house battery

2 Temperature sensor probe

3 Integrated cutoff relay of the central electrical system

4 Existing cable between the house battery and the central electrical system

5 Distribution block

6 Load relay (normally closed, 12 V/100 A)

Operation

NOTE

Use a small screwdriver to carefully move the DIP switches to the desired position.

Setting the charging program

NOTICE! Damage hazard

Only use batteries that are suitable for the specified charging voltage.

NOTE

- Select the charging program suitable for the type of battery used based on the manufacturer's specifications, the information in the table below and the technical data (see chapter "Technical data" on page 26).

- The specified charging times apply to an average ambient temperature of 20^ .

▶Slide the DIP switches (fig. 2 1, page 3) to the position shown in the table below to set the charging program for the respective type of house battery.

DIP switch position (gray)	Desired charging program	U1 Full charge	U2 Full trickle charge	U3 Storage charging
	Lead acid batteries/ AGM batteries (14.4 V) (fig. 7, page 5)	14.4 V (1.5–6 h)	13.5 V (24 h)	13.2 V (regeneration 2 times per week: 14.4 V within 1 h)
	AGM batteries (14.7 V) (fig. 8, page 5)	14.7 V (1.5–5 h)	13.6 V (24 h)	13.2 V (regeneration 2 times per week: 14.7 V within 1 h)
	Lead gel batteries (14.4 V) (fig. 9, page 5)	14.4 V (4–12 h)	13.8 V (48 h)	13.5 V (regeneration 2 times per week: 14.4 V within 1 h)
	LiFePO4 batteries (14.4 V) (fig. 10, page 5)	14.4 V (0.3 h)	13.8 V (24 h)	13.5 V (no regeneration)

Selecting the function for the TR terminal

NOTE

• To activate a change of the settings, disconnect the device temporarily from the power supply, the starting battery and the house battery.

- E6 vehicles: Operating with control signal is required. Operating without control signal is not available.

▶ Slide the DIP switches (fig. 2 1, page 3) to the position shown in the table below to set the function for TR terminal.

DIP switch position (gray)	Con- nection variant	Increase of charging power	Reduction of charging power	TR output function
	A	O p control signal: >10.5VOperation without control signal: >13.2V	Operation with t control signal: <10.2VOperation without control signal: <13.0V	i o n w i
	B	O p control signal: >10.5VOperation without control signal: >13.2V	Operation with t control signal: <10.2VOperation without control signal: <13.0V	Control of a normally open relay (NO):Current < 25 A: Battery control booster active, TR inactive (NO relay open, normal operation).Current >25 A: Battery control booster inactive, TR active (NO relay closed)
	C	O p control signal: >10.5VOperation without control signal: -	Operation with t control signal: <10.2VOperation without control signal: -	Control of a normally closed relay (NC):Current < 25 A: Battery control booster active, TR active (NC relay open).Current >25 A: Battery control booster inactive, TR inactive (NC relay closed, normal operation)

Setting the pulsing operation

▶ Slide the DIP switches to the position shown in the table below to activate or deactivate the pulsing operation.
√ The green "Power" LED flashes every 20 s.
√ Pulser is activated. The house battery is trained.

DIP switch position (gray)

Function

Pulser is automatically activated when neither mains nor booster operation is set:

• Activation of pulser with voltage at BORD+ terminal at < 13.5V
• Deactivation of pulser with voltage at BORD+ terminal at < 11.00V

Pulser is deactivated.

Setting the night mode

NOTE

When using the night mode the system stays in this mode for 10 hours and then returns to normal operation.

In night mode the cooling fan is switched to the lowest speed for quiet operation. The control panel is darkened. All LEDs on the control panel except the "Current" LED are switched off.

▶To activate or deactivate the night mode press the On/Off button on the control panel once.
√ The "Current" LED lights up dimly red.

Limiting the charging current

▶To limit the charging current in booster mode, use the DIP switch on the back of the display panel (fig. 1 3, page 3).

DIP switch position (gray)

Function

Charging current limited to 20 A (factory setting)

Note: Recommended for lead battery capacities >80 Ah

Charging current limited to 25 A

Note: Recommended for lead battery capacities >100 Ah

Cleaning and maintenance

WARNING! Electrocution hazard

Unplug the batteries before cleaning and maintenance.

NOTICE! Damage hazard

• Never clean the device under running water or in dish water.
• Do not use sharp or hard objects, abrasive cleaning agents or bleach during cleaning as these can damage the device.

▶Occasionally clean the device with a soft, damp cloth.
▶ Regularly check live cables or lines for insulation faults, breaks or loose connections.

Troubleshooting

Fault Possible cause Suggested remedy
The battery control booster does not work. The green "Power" LED does not light up.	Insulation faults, breaks or loose connections at the live cables.	▶ Check live cables for insulation faults, breaks or loose connections. If you cannot find an error, contact an authorized service agent.
	Short circuit has been generated. The device fuse must be replaced by an authorized service agent after it has been triggered by excess current.
The battery control booster does not work. The yellow "Main Charging" LED flashes.	Over voltage protection of the house battery. Battery voltages too high (>15.5 V).	▶ Reduce the connected voltages. The battery control booster restarts automatically when the voltage drops to the restart value (<13.2 V).
	Connection of defective charging systems.	▶ Check and remove defective charging systems if necessary.
	Only LiFePO4 batteries: Temperature sensor is not connected.	▶ Connect the temperature sensor.
Unusually long charging time. The yellow "Batt. I" LED flashes slowly.	High temperature shutdown: The battery control booster switches to reduced charging voltage (12.8 V) and the maximum charging current is halved when the temperature of the battery exceeds the cutoff value (>50 °C).	▶ Check that the air inlets and outlets are not covered or obstructed. ▶ Allow the battery to cool down. The battery control booster returns automatically to full charging voltage when the temperature drops to the restart value (<48 °C).
	Low temperature shutdown (only for LiFePO4 batteries): The battery control booster switches to reduced charging voltage (12.8 V) when the temperature of the battery drops below the cutoff value (< 20 °C).	▶ Move the battery to a warmer location. The battery control booster returns automatically to full charging voltage when the temperature exceeds the restart value (>18 °C).
Unusually long charging time. The yellow "Batt. I" LED flashes quickly.	Low temperature protection (only for LiFePO4 batteries): The battery control booster switches to reduced charging current when the temperature of the battery drops below the cutoff value (< 0 °C).	▶ Move the battery to another location (>0 °C). The battery control booster restarts automatically when the temperature exceeds the restart value (>0 °C).
Unusually long charging time. The yellow "Batt. II" LED flashes slowly.	Low voltage protection: The battery control booster switches to reduced charging current (< 30 %) to protect the battery.	The battery control booster returns automatically to full charging current when the voltage rises to the restart value.

Fault Possible cause Suggested remedy

The battery control booster stops the charging process. The green “Power” LED flashes slowly.	Shutdown by safety timer. The I phase has lasted too long (>15 h).	▶ Reset the device by removing the con-trol signal at D+. Switch off the motor and disconnect the device from the mains.
	Too many DC loads connected.	▶ Reduce the connected DC loads.
	The battery is defective.	▶ Replace the battery.
	Overheating of the battery control booster.	The battery control booster restarts auto-matically when the temperature drops.
The battery is no longer taking a charge or is unable to hold a charge.	The battery is defective.	▶ Replace the battery.
Full charge current is not reached. The green “Power” LED is lit.	House battery is already charged.	▶ Load with powerful consumers.
	The battery terminals are not connected correctly.	▶ Check the connections. ▶ Check the cable cross-sections and lengths (see table on page 19). ▶ Check the stripped cable ends. ▶ Check the voltages directly at the ter-minals.
	The battery is significantly sulfated.	▶ Replace the battery.
	The DIP switch on the back of the dis-play panel is set incorrectly.	▶ Check the setting of the DIP switch on the back of the display panel (see chapter “Limiting the charging cur-rent” on page 23).
Control panel only lights up poorly.	Night mode is activated.	▶ Switch off the night mode (see chap-ter “Setting the night mode” on page 23).
Connection variant C: Load relay is clicking.	“V” position of the DIP switch (fig. 2 1, page 3) not selected.	1.Disconnect the battery wiring from the battery control booster. 2. Slide the DIP switch (fig. 2 1, page 3) to the “V” position. 3.Wait 10 s. 4.Reconnect the battery wiring to the battery control booster.
	Weak D+ signal.	▶ Check the D+ signal. ▶ Alternatively use the ignition key sig-nal (terminal 15) or install a D+ active simulator.

Warranty

The statutory warranty period applies. If the product is defective, please contact your retailer or the manufacturer's branch in your country (see

dometic.com/dealer).

For repair and warranty processing, please include the following documents when you send in the product:

• A copy of the receipt with purchasing date

- A reason for the claim or description of the fault Note that self-repair or nonprofessional repair can have safety consequences and might void the warranty.

Disposal

Recycling packaging material

Place the packaging material in the appropriate recycling waste bins wherever possible.

Recycling products with non-replaceable batteries, rechargeable batteries or light sources

If the product contains any non-replaceable batteries, rechargeable batteries or light sources, you don't have to remove them before disposal.

If you wish to finally dispose of the product, ask your local recycling center or specialist dealer for details about how to do this in accordance with the applicable disposal regulations.

The product can be disposed free of charge.

Technical data

Charging output house battery
Nominal battery voltage 12 V---
Recommended battery capacity	80 – 300 Ah
Maximum pre-charge current of a deeply discharged battery (0 – 9 V)	10 A
Minimum battery voltage for start of charging	0 V
Charging input/output starting battery
Nominal battery voltage 12 V---
Recommended battery capacity	80 Ah
Mains operation
Nominal operating voltage	230 V~ /45 – 65 Hz
Voltage range• Full charging power	190 – 265 V~

• Short-time (5 $) 305V ~
Sinusoidal current consumption, power factor correction (CosPhi = 1)	yes
Max. power consumption (AC)	320 W
Max. current consumption (AC)	0.001 A
Signal output “Netz”, indication light/max.	12 V/0.1 A
Charging current, regulated (I phase)	20 A
Charge/buffer/load current, regulated (U1,U2, U3 phase)	0 - 20 A
Booster operation
Max. power consumption (AC)	390 W
Max. current consumption (AC)	33.0 A
Minimum battery voltage for start of charging	9.5 V
Charge/buffer/load current, regulated (U1,U2, U3 phase)	0 - 25 A
Reduced charge/buffer/load current, regulated (U1,U2, U3 phase)	0 - 20 A
Mains and booster operation
Reverse current from battery	0.003 A
Pulsing operation
Double-peak current pulses, short-time	>100 A
General technical data
Protection class/ type	I/IP21
Ambient temperature for operation	-20 °C to +45 °C
Ambient humidity	≤ 95 %, non-condensing
Dimensions (W x D x H)	270 x 223 x 74 mm (fig. 16, page 10)
Weight 2.85 kg
Inspection/certification

DE

Description technique

• Loodzuuraccu's
• Gelaccu's
  • Vliesaccu's (AGM-accu's)
• LFP - accu's

6: herstel (reconditioning)

10 mm ^2 <9,0 m 3,0–6,0 m

Aansluitvariant A (afb. 13, pagina 7)

FORSIGTIG! Brandfare

Anbring sikringen i nærheden af batterierne for at beskytte kablet mod kortslutning og mulig brand.

VIGTIGT! Fare for beskadigelse

10 mm ^2 <9,0 m 3,0–6,0 m

Tilslutningsvariant A (fig. 13, side 7)

6: Rekonditionering (recondition)

dometic.com/sales-offices