KA3706 - Battery charger KRESS - Free user manual and instructions

Name: KA3706
Brand: KRESS
Rating: 8.5 (167 reviews)

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Product type	Battery charger
Brand	Kress
Model	KA3706
Input voltage	220-240 V ~ 50 Hz
Output voltage	60 V
Charging current	8 A
Rated power	580 W
Compatible battery type	Li-Ion (Kress packs)
Number of batteries chargeable simultaneously	2
Recommended charging temperature	18-24 °C
Thermal protection	Yes (internal fan)
Charge indicator	Green LED (charging) / red (fault)
Charging time (example 2.0 Ah, 1 pc)	Approximately 25 min
Charging time (example 4.0 Ah, 2 pcs)	Approximately 60 min
Weight	2.8 kg
Protection class	II
Usage	Indoor only
Wall mount included	Yes
Maintenance	Clean with a dry cloth
Repairability	Contact an authorized service center

Frequently Asked Questions - KA3706 KRESS

How to charge the battery with the KA3706 charger?

Plug the charger into a suitable outlet (220-240 V). Insert one or two Li-Ion Kress batteries into the slots. The green LED flashes during charging, then stays steady when the battery is fully charged.

What does a steady red light on the charger mean?

A steady red light indicates a faulty battery. Try with another battery. If the problem persists, the charger may be defective and should be checked by an authorized service center.

Can I charge two batteries at the same time?

Yes, the KA3706 charger is designed to charge one or two batteries simultaneously. Charging times vary depending on capacity and number of batteries.

What types of batteries can I charge with this charger?

This charger is compatible only with Li-Ion batteries from the Kress brand. Do not use other batteries, as this could be dangerous.

Why does charging take longer than expected?

Charging time can be affected by ambient temperature (outside 18-24 °C), a partially discharged battery, or higher capacity. Make sure the environment is suitable.

What should I do if the red light flashes?

A flashing red light indicates thermal protection: the battery is too hot (>60°C) or too cold (<0°C). Let the battery cool down or warm up, then charging will resume automatically.

Can I leave the battery on the charger after charging?

Yes, the charger maintains a trickle current, but it is recommended to remove the battery after full charge to extend its lifespan.

How to install the charger wall mount?

Securely attach the mount to the wall with screws (not supplied), ensuring it supports the weight of the charger and battery. Insert and remove batteries carefully.

Can the charger be used outdoors?

No, the charger is designed for indoor use only. Do not expose it to rain, water, or humidity.

How to maintain the charger?

Always unplug the charger before cleaning. Use a dry cloth. Never use water or chemicals. Store in a dry, frost-free place.

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Download the instructions for your Battery charger in PDF format for free! Find your manual KA3706 - KRESS and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. KA3706 by KRESS.

USER MANUAL KA3706 KRESS

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Line drawing of a Kress machine component (no text or symbols)

Dual Port Battery Charger	EN	P03
Dual-Port-Batterieladegerät	D	P07
Chargeur De Batterie Double	F	P11
Caricabatterie A Doppia Porta	I	P16
Cargador De Baterías De Dos Puertos	ES	P20
Carregador Da Bateria De Porta Dupla	PT	P25
Dual-Port Acculader	NL	P29
Dual Port Batterioplader	DK	P34
Batterilader Med To Ladeutganger	NOR	P38
Laddare Med Två Portar	SV	P42
Dwuportowa Ładowarka Do Akumulatorów	PL	P46
Φορτιστης μπαταριας δυο θυρων	GR	P50
Két Porttal Rendelkező Akkutöltő	HU	P55
Încărcător De Acumulator Cu Port Dublu	RO	P60
Duální Nabíječka Baterií	CZ	P64
Duálna Nabíjačka Batérií	SK	P69
Dvo-Portni Polnilnik Akumulatorjev	SL	P73

KRESS KA3706 - 1

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Technical diagram of a device with numbered components, likely an electric shock absorber or fan assembly.

KRESS KA3706 - 2

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Technical diagram showing a U-shaped component with upward arrows and circular indicators, labeled with number 4

KRESS KA3706 - 3

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A >20MM 4MM

Users can view the electronic instructions at https://www.kress.com/.

Original instructions PRODUCT SAFETY GENERAL SAFETY WARNINGS

WARNING Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

This appliance 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 appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.

If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

ADDITIONAL SAFETY INSTRUCTIONS FOR YOUR BATTERY CHARGER

Before charging, read the instructions.
Do not charge a leaking battery.
Do not use chargers for works other than those for which they are designed.
Before charging, ensure your charger is matching the local AC supply.
For indoor use, or do not expose to rain.
The charging device must be protected from moisture.
Do not use the charging device outdoors.
Do not short out the contacts of battery or charger.
Do not open the unit and keep it out of the reach of children.
Do not charge the batteries of other manufactures or ill-suited models.
Ensure that the connection between the battery charger and battery is correctly positioned and is not obstructed by foreign bodies.
Keep battery charger's

slots free of foreign objects and protect against dirt and humidity. Store in a dry and frost-free place.

When charging batteries, ensure that the battery charger is in a well-ventilated area and away from inflammable materials. Batteries can get hot during charging. Do not overcharge any batteries. Ensure that batteries and chargers are not left unsupervised during charging.
Do not recharge non-rechargeable batteries, as they can overheat and break.
Longer life and better performance can be obtained if the battery pack is charged when the air temperature is between 18°C and 24°C. Do not charge the battery pack in air temperatures below 0°C or above 40°C. This is important as it can prevent serious damage to the battery pack.
Charge only battery packs of models recommended by Kress.

SYMBOLS

	Read the operator's manual.
	Warning
	For indoor use only
T 10A	Fuse
	Double insulation
	Positive terminal
	Negative terminal
	Waste electrical products must not be disposed of with household waste.Please recycle where facilities exist.Check with your local authorities or retailer for recycling advice.

COMPONENT LIST

BATTERY PACK*
CHARGER
CHARGE INDICATOR LIGHT
WALL-MOUNT HOLDER

*Not all the accessories illustrated or described are included in standard delivery.

We recommend that you purchase your accessories listed in the above list from the same store that sold you the tool. Refer to the accessory packaging for further details. Store personnel can assist you and offer advice.

TECHNICAL DATA

Rated Input voltage 220-240 V~50 Hz
Output voltage 60V	---
Charging current 8 A
Rated Input power 580 W
Charge battery Li-Ion
Charging time (approx.)
Battery pack 2.0 Ah (1pc) Approx. 25 mins
2.0 Ah (2pcs)	Approx. 30 mins
2.5 Ah (1pc) Approx. 30 mins
2.5 Ah (2pcs) Approx. 40 mins
4.0Ah (1pc) Approx. 30 mins
4.0 Ah (2pcs) Approx. 60 mins
5.0Ah (1pc) Approx. 40 mins
5.0 Ah (2pcs) Approx. 75 mins
8.0 Ah (1pc) Approx. 60 mins
8.0 Ah (2pcs) Approx. 120 mins
Protection class	☐/II
Machine weight 2.8 kg

For the technical data of the types, the number of cells and the rated capacity of the batteries that can be charged, please refer the nameplate of the battery pack supplied by Kress.

CHARGING PROCEDURE

KRESS KA3706 - CHARGING PROCEDURE - 1

NOTE: Before using the tool, read the instruction book carefully.

You can get the manual through other ways, such as consulting after- sales department.

CHARGING INSTRUCTIONS

1. CHARGING YOUR BATTERY PACK

This charger is designed to charge one or two battery packs together or in a row.

KRESS KA3706 - CHARGING YOUR BATTERY PACK - 1

WARNING:

The charger and battery pack are specifically designed to work together so do not attempt to use any other devices to charge. Never insert or allow metallic objects into your charger or battery pack connections because an electrical failure and hazard will occur.

Your battery pack is partly charged and needs to be fully charged before first use.

3. HOW TO CHARGE YOUR BATTERY PACK CHARGING PROCEDURE

1) Plug the charger into an appropriate outlet.
2) Slide one battery pack or two battery packs into the charger. Normally, the relevant indication lights (3) will flash in green color showing the battery is being charged.

KRESS KA3706 - HOW TO CHARGE YOUR BATTERY PACK CHARGING PROCEDURE - 1

WARNING: When battery charge runs out after continuous use or exposure to direct sunlight or heat, allow time for the battery to cool down before re-charging to achieve the full charge.

CHARGING INDICATOR LIGHTS

This charger is a “smart charger” that is designed to provide you information on the status of your battery charge. Indicator lights n the table below will show the charging status. If you receive a defective battery indication light (red on), insert a new battery to determine if the charger is OK..If the new battery pack charges correctly, then the original pack is defective and should be returned to a service center or recycling service center. If the new battery pack displays the same problem as the original battery pack, have the charger tested at an authorized service center.

Light ON/ flash Status
Green on	—	Fully Charged
Green flash	- - - - - - Charging
Red on	—	Defective Battery
Red flash	- - - - - -	Battery Temperature ProtectionThe temperature of battery pack is less than 0°C or more than 60°C.

DEFECTIVE BATTERY PACKS

This charger will detect a defective battery pack. When a defective battery pack is inserted into the charger, the charger will try to repair it. This process will last about 30mins (the light will be green and flash). If the repair is successful, the charger will automatically begin to charge the battery pack to the highest capacity possible (the light will be green and flash). If the light becomes solid red, then the battery pack is dead, and should be returned to a service center or recycling service center.

NOTE: Repaired battery packs are still usable but should not be expected to perform as much work as new battery packs.

BATTERY TEMPERATURE PROTECTION

This charger has a battery temperature protection feature. When the charger detects a battery pack that is too hot (the light will be red and flash), its internal fan will rapidly cool the battery to the correct temperature. When the charger detects a battery pack that is too cold (the light will be red and flash), it automatically activates the protection circuit, and suspends charging until the battery pack has reached the correct temperature. The charging process will then automatically begin (the light will be green and flash). This feature ensures maximum battery life.

LEAVING THE BATTERY PACK IN THE CHARGER

If a fully charged battery pack is left in the charger, the light will remain green. The battery pack will remain charging with a maintenance trickle current.

NOTE: it is recommended to put out the battery from the charger after fully charged and not store your battery in the charging device for a longer period

WALL-MOUNT HOLDER

The charger is equipped with the Wall-mount holder for convenient storage. Fix the holder onto the wall tightly enough by screws(not provided) to make sure it can

hold the combined weight of the charger and battery pack. (See.Fig. A)

KRESS KA3706 - WALL-MOUNT HOLDER - 1

WARNING: Be careful when insert and pull off the batteries from a hanging charger.

IMPORTANT CHARGING NOTES:

For a new battery pack or a battery pack that has been in storage for a long period, please recharge it before use. If you want to store the battery pack for a long time, please fully charge the battery pack to ensure maximum battery life.
Longer life and better performance can be obtained if the battery pack is charged when the air temperature is between 18-24°C. Do not charge the battery pack in air temperatures below 0°C, or above 40°C. This is important as it can prevent serious damage to the battery pack.
Never freeze your charger or immerse charger in water or any other liquid.
When the battery pack fails to produce sufficient power on jobs that were previously done easily, please recharge your battery pack, do not continue using it under this condition. You may charge a partially used pack whenever you desire with no adverse effect on the battery pack.
When charging, it is normal that the charger and battery pack may become gently warm to touch.
If the battery pack does not charge properly:
a. Check current at power outlet by plugging in another appliance.
b. Plug and unplug to check whether the charger is ok
c. Check whether the battery pack has been damaged
d. Move the charger and battery pack to a location where the surrounding air temperature is approximately 18-24°C.
e. If the charging problem persists, take the tool, battery pack and charger to an authorized service center.
f. Under certain conditions, when the charger is plugged into the power supply, the exposed charging contacts inside the charger can be shorted by foreign material. Foreign materials of a conductive nature such as metallic particles should be kept away from charger cavities. Always unplug the charger from the power supply when there is no battery pack in the charger or before attempting to clean.

PROBLEM SOLUTION

I CANNOT FIT THE BATTERY PACK INTO THE BATTERY CHARGER. WHY?

a) Check if the charger and the battery pack are specifically designed for working together.
b) The battery pack can be inserted into the charger only in one direction. Turn the battery pack around until it can be inserted into the slot, the indicator light should be green and flash when the battery pack is charging.

REASONS FOR DIFFERENT CHARGING TIMES

The charging time can be affected by many reasons which are not defects in your product.

a) If the battery pack is only partly discharged it may be re-charged in less than rated charging time.

b) If the battery pack and ambient temperature are very cold/hot, it may take longer to re-charge. Please find an appropriate environment with proper air temperature to start charging.

c) Batteries of higher Amp Hour rating require more charging time.

MAINTENANCE

Remove the plug from the socket before carrying out any adjustment, servicing or maintenance.

Your battery charger requires no additional lubrication or maintenance. Never use water or chemical cleaners to clean your charger. Wipe clean with a dry cloth. Always store your charger in a dry place.

If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

ENVIRONMENTAL PROTECTION

KRESS KA3706 - ENVIRONMENTAL PROTECTION - 1

Waste electrical products must not be disposed of with household waste. Please recycle where facilities exist. Check with your local authorities

or retailer for recycling advice.

DECLARATION OF CONFORMITY

We,

Positec Germany GmbH

Postfach 680194, 50704 Cologne, Germany

On behalf of Positec declare that the product

Description Kress Battery Charger

Type KA3706

Complies with the following Directives,

2014/35/EU

2014/30/EU

2011/65/EU&(EU)2015/863

Standards conform to

EN 60335-1

EN IEC 60335-2-29

EN 62233

EN IEC 55014-1

EN IEC 55014-2

EN IEC 61000-3-2

EN 61000-3-3

EN IEC 63000

KRESS KA3706 - DECLARATION OF CONFORMITY - 1

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A# C E

2024/1/22

Allen Ding

Deputy Chief Engineer Testing & Certification

Positec Technology (China) Co., Ltd