EXTOL 8795737 Battery with Backpack Instruction Manual

: July 16, 2024
: EXTOL

Table of Contents

EXTOL 8795737 Battery with Backpack
Product Information
Product Usage Instructions
Introduction
Description
Technical specifications
Safety Instructions
Specific safety instructions
Description
Charge level indicator
MOUNTING THE BATTERY ON THE BACKPACK
Maintenance
Troubleshooting
LED ABNORMAL STATE INDICATION
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

EXTOL 8795737 Battery with Backpack

Product Information

Model Numbers: 8795737 (Battery with a backpack 60 V/15 Ah), 8795738 (Backpack only)
Battery Capacity: 60V / 15 Ah
Manufacturer: Extol
Contact: info@madalbal.cz
Tel.: +420 577 599 777

Product Usage Instructions

Safety Precautions:
Avoid exposing the battery to heat or fire. Do not burn the battery.

Storage and Care:
Follow the below guidelines for proper storage and maintenance:

Store in a cool, dry place.
Avoid extreme temperatures.
Do not be exposed to direct sunlight for extended periods.

Charging Instructions:

Use only the specified charger for the battery.
Ensure the battery is completely dry before charging.
Follow the recommended charging time to avoid overcharging.

Usage Tips:

Always check the battery level before use.
Avoid dropping or mishandling the battery.
Do not disassemble the battery pack.

FAQ (Frequently Asked Questions)

Q: How long does it take to charge the battery fully?
A: The charging time may vary but typically takes X hours for a full charge.
Q: Can I use this battery with other devices?
A: It is recommended to use the battery only with compatible devices as specified by the manufacturer.

Introduction

Dear customer,

Thank you for the confidence you have shown in the Extol® brand by purchasing this product.
This product has been tested for reliability, safety, and quality according to the prescribed norms and regulations of the European Union.
Contact our customer and consulting center for any questions at: www.extol.eu
Manufacturer: Madal Bal a. s., Průmyslová zóna Příluky 244, 76001 Zlín, Czech Republic
Date of issue: 16. 1. 2024

Description

Description – purpose of use

Thanks to its connecting cable and specific connection connector, the 60 V/15 Ah Extol® 8795737 battery is only intended for charging 60 V cordless power tools of the Extol® brand. The battery is intended to be mounted in the backpack, which needs to be purchased separately (part no.: 8795738).
Only charger Extol® 8795741, with fast or slow charging with a maximum charging current of 4 A/8 A, is intended for charging batteries. The battery is equipped with protection against being excessively discharged during the use of a power tool, which would damage it.

Technical specifications

Model number/part number
- 8795737 (60 V/15 Ah battery without the backpack)
- 8795738 (backpack without the battery)
Terminal voltage of battery without load 60 V
Terminal voltage of a battery under load 54 V
Battery Type/Capacity/Watt-hour rating Li-ion/15 Ah/810 Wh
IP number IP54
Weight with backpack 7.5 kg
Operating temperature -20 °C to +45 °C
Specified charger for charging process Extol® 8795741

WARNING
To reduce the risk of injury, the user must read and study this user‘s manual before the first use of this product. Keep these instructions for future use.

Please read all the instructions

READ AND STUDY THIS USER‘S MANUAL
This battery has several functions available, which ensure its more comfortable and pleasant use. Safety, performance, and reliability were the highest priority in the design of this product and therefore its easy maintenance and operation are guaranteed.

Safety symbols
The purpose of the symbols is to bring possible hazards to your attention. The safety symbols and the texts next to these symbols deserve your careful attention and understanding. Warning symbols alone do not eliminate any hazards. Instructions and warnings that are provided do not, under any condition, substitute for proper safety prevention measures.

WARNING:
Before using this product, ensure that you have acquainted yourself with and understand perfectly all the safety instructions provided in the user‘s manual, including all the safety warning symbols such as „DANGER“, „WARNING“, and „ATTENTION“. Not adhering to any of the instructions below, may result in injury by electrical shock, a fire, or serious injury.

WARNING
When working with any power tool, foreign material particles can be deflected directly into your eyes, which may result in serious eye injuries. If necessary, prior to starting work with this power tool, always use protective glasses, goggles with side covers or a face shield. We recommend that you use a safety mask with wide-angle vision that you place over glasses or standard safety glasses with side guards.

WARNING
Risk of fire and burn injuries. Do not disassemble, heat up or throw into a fire. Keep the battery out of children‘s reach and in the original packaging until it is used. Immediately dispose of used batteries in accordance with local regulations for recycling and waste disposal.

Safety Instructions

This page displays and describes the safety symbols that may appear on this product. Before assembling and using this product, carefully study and acquire a full understanding of and adhere to all the instructions provided on the product.

WARNING

Read and thoroughly study all the instructions. Not adhering to all of the following safety instructions may lead to injury by electrical shock, a fire, and/or a serious injury to persons.
The term „electric power tool“ specified in all warnings below relates to your tool powered from the mains (with a power cord) or from a battery (without a power cord).

WARNING
To ensure safety and reliability, all repairs must be performed by a qualified service technician.

Safety in the work area

Keep the work area clean and well-illuminated. An untidy work area or its insufficient illumination may lead to accidents.
Do not work with electrical power tools in explosive environments such as, for example, those where flammable liquids, gases, or powder substances are present. Power tools are a source of sparks, which may cause the ignition of powder or fumes.

Using battery-powered power tools and their maintenance

Prevent the power tool from being turned on accidentally. Before connecting the battery to the power tool, before lifting it and carrying it, check that the trigger switch is in the Off position. Carrying power tools with the finger on the trigger switch or connecting the power cord to the power socket when the trigger switch is in the On position may cause injury.
Before making any adjustments, before changing accessories or storing the power tool, disconnect the battery from this power tool. These preventative safety provisions reduce the risk of accidentally starting the power tool.
Do not perform any modifications and do not attempt to repair this power tool or battery, unless this is described in the user and maintenance manual.
Do not use batteries or power tools that are damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior, which may result in fire, explosion, or injury.
Only charge the power tool using the charger specified by the manufacturer. A charger that is suitable for only one type of battery, may cause a fire if a different unsuitable battery type is inserted into it.
Only use power tools with batteries that are specifically intended for them. Using different types of batteries may cause a fire or explosion.
60 V batteries of the Extol brand are designed specifically for 60 V Extol power tools. Using these batteries in any other power tool may not only damage this battery and power tool but may also cause injuries and fire.
When the battery is not being used, store it so that it does not come into contact with metal objects such as paper clips, coins, nails, screws, and other small metal items, which would enable the connection of the battery contacts. Short-circuiting the battery contacts may cause burns or a fire.
When a battery is damaged as a result of incorrect handling, a fluid may leak out of it. Avoid contact with this fluid. If you accidentally become stained by this fluid, wash the affected area with water. If contact with the eyes occurs, rinse out the eyes with clean water and seek medical help. Leaking battery fluid may cause skin irritation or burns.

Service
Adhere to the instructions provided in the Maintenance section of this user‘s manual. The use of unauthorized parts or not adhering to instructions for maintenance may create a risk of injury by electrical shock or other injuries.

Specific safety instructions

Acquaint yourself with our power tools and batteries. Carefully read the user‘s manual. Acquaint yourself with this power tool, with all restrictions and also any specific potential risks related to its use. Adherence to this rule will reduce the risk of injury by electrical shock, fire, or serious injury.
Battery-powered power tools do not need to be connected to a mains electrical socket and thus are always ready for use. When not using the battery-powered power tool or when changing accessories, realize the possible risks. Adherence to this rule will reduce the risk of injury by electrical shock, fire, or serious injury.
Do not expose the battery or the power tool to fire or excessive temperatures. The effect of fire or higher temperatures may cause an explosion.
Do not throw batteries into a fire. The battery cells may explode. Consult with local authorities about possible special instructions regarding disposal.
Do not attempt to disassemble or destroy the batteries. Leaking electrolytes will induce corrosion and may cause eye or skin injuries. It may be toxic when swallowed.
Prevent crushing, falling, or other damage to the battery. If the battery or the charger has fallen or has been significantly impacted, do not use it. A damaged battery may explode. Immediately dispose of batteries that were dropped or damaged in another way.
Prevent the device from being used by persons (including children) whose physical, sensory, or mental disability or incapacity or insufficient experience or knowledge prevents them from safely using the device without supervision or instruction. Children must not play with the device.
It is generally not assumed that the device will be used by very small children (age 0-3 years inclusive) and used by small children without supervision
(age between 3 and 8 years). It is conceded that seriously handicapped persons may have needs outside the level specified by this norm (EN 60335). It is up to the discretion of the parents or overseeing persons, whether they allow their children to use this charger.
Do not charge the battery in a humid or wet environment. Adherence to this instruction will reduce the risk of injury by electrical shock.
Adhere to all instructions related to charging, and do not charge batteries or the power tool outside of the temperature range specified in these instructions. Incorrect charging or charging outside the specified temperature range may cause damage to the battery and increase the risk of a fire.
The battery may leak during demanding use or at extreme temperatures. If the battery fluid comes into contact with the skin, immediately wash the affected areas with soap and water and neutralize the electrolyte using lemon juice or vinegar. If battery fluid enters the eyes, rinse them out with clean water for at least 10 minutes and then immediately seek medical help. Adherence to this rule will reduce the risk of causing a serious injury.
Do not permit petrol, oils, crude oil products, etc. to come into contact with plastic parts. These substances contain chemicals that could damage, weaken, or destroy plastics.
Have your battery repaired only by a qualified technician who will use identical spare parts. This will ensure safe operation and maintenance of the battery.
Please keep these instructions. Proceed according to these instructions and use them for training other people who will be using this power tool. If you loan this product to somebody, also loan these instructions to such a person to prevent incorrect use of this product and possible injuries.

PLEASE KEEP THESE INSTRUCTIONS!

Description

Acquaint yourself with your backpack lithium-ion battery (fig. 1)

Fig. 1a, Position-description

Battery charge level indicator with 5 LEDs
Battery cable
LED abnormal state indicator
Battery charge level check button
Battery/charger connecting connector

Fig. 1b, Position-description

Fuse
Bottom battery bracket (load-bearing part)
Top click-in battery bracket

Fig. 1c, Position-description

Release from the backpack button
Carry handle

Charge level indicator

To determine the battery charge level, press the button (fig.1a, position 4), and the number of lit diodes expresses the battery charge level.

Note:
For information relating to the LED abnormal state indicator (fig. 1a, position 3), see the section Troubleshooting below.

BATTERY PROTECTION
The battery circuits protect the battery against extreme temperature, excessive discharging, and over-charging. For the battery to be protected against damage and to extend its lifetime, the battery‘s circuit will disconnect whenever it is overloaded or if its temperature rises too far.

During the charging process, this battery will automatically turn off and all the LED indicator segments will turn off when the temperature is greater than 60°C or lower than 10°C. Wait until the battery reaches a normal temperature. Charging will recommence when the battery returns to the specified temperature range.
When discharging, the battery will turn off automatically when the temperature is higher than 60°C or lower than -20°C. All 5 LED indicator diodes will be lit for 10 seconds when the battery charge level button is pressed. The battery will start working as normal in both cases when the temperature returns to normal after the power tool is restarted.

WARNING
Under no circumstances is it permitted to heat the battery in any way.

OPERATION IN COLD WEATHER.
This lithium-ion type battery will provide optimal performance at temperatures in the range from 10°C to 26°C. If this battery is very cold, it may „pulse“ during the first couple of minutes of use to heat itself. Insert the battery into the power tool and use the power tool for light work. After approximately one minute, the battery will heat itself and will function normally.

WHEN TO CHARGE THE BATTERY NOTE
Lithium-ion type batteries are supplied partially charged. Before the first use of this backpack battery, charge it fully. Before recharging it, this battery does not need to be fully discharged (flat). Lithium-ion type batteries may be charged at any time and, when charged after only a partial discharge, there is no „memory“ effect. Use the LED indicator with 5 charge levels to determine when this battery needs to be charged again.

HOW TO CHARGE BATTERIES
For charging, use the Extol 8795741 battery charger. Further information about charging with this charger is available in the user‘s manual of this battery charger.

MOUNTING THE BATTERY ON THE BACKPACK

INSERTION (FIG. 2)

First seat the battery onto the bottom bracket (load-bearing part of the backpack (fig. 1b, position 2) and then push the top part of the battery against the bac-kpack so that an audible click-in sound of the top click–in battery bracket is heard (fig. 1b, position 3).

REMOVING THE BATTERY FROM THE BACKPACK (FIG. 3 AND 4)

Press the button of the top click-in battery bracket (fig. 1b, position 3) and after releasing the top part of the battery, move the battery away from the backpack (fig. 4) and then lift it upwards to remove it from the bottom bracket (fig. 4).

HOW TO ADJUST THE CARRY STRAPS OF THE BATTERY BACKPACK

Insert your arms into the shoulder carry straps to support the backpack battery on your back and temporarily set both shoulder straps to comfortable positions so that your shoulders are in a comfortable position (fig. 5).
Click-in the lumbar buckle on the strap and set its length so that the backpack battery is safely supported by your hips (fig. 6 and 7).
NOTE
This battery must not be set too high on your back. It must be located closer to your hips than to your shoulders.
Click in the chest buckle and, if necessary, adjust its length (fig. 8).
Again adjust the shoulder straps so that safety and comfort are ensured. Check that the battery backpack is securely seated on your back and that its weight is supported by the lumbar strap and that it is not moving excessively while you are moving (fig. 9).
Slide the overlapping length of the strap into the clip on both sides (fig. 10).
If you wish to take the battery off your back, press only the waist and chest buckles to release them and lower the backpack battery to the ground (fig. 11).

WARNING
If an emergency occurs, immediately release the waist and chest buckles to release the back strap on each side, which is a rapid-release method.

CONNECTING AND DISCONNECTING THE BACKPACK BATTERY TO/FROM POWER TOOLS
Proceed according to instructions provided in the user‘s manuals for the individual products with the 60 V power voltage.

WARNING
When cleaning or performing any maintenance tasks, disconnect this battery from the power tool to prevent causing serious injuries.
WARNING
When performing repairs and maintenance, always use only original Extol parts. If different parts are used, risks may arise or the product may be damaged. To ensure safety and reliability, all repairs must be performed at an authorized service center or by the vendor.

Maintenance

BASIC MAINTENANCE
When cleaning plastic parts, do not use solvents. The majority of plastics have a propensity to be damaged by various types of commercial solvents and their use may result in damage to plastics. When removing soils, dust, oils, lubricants, etc. use clean rags.

WARNING
Never permit the plastic parts to come into contact with brake fluid, petrol, crude oil-derived products, penetration oils, etc. Chemicals may damage, weaken, or destroy plastic parts, which may lead to serious injury to persons.
WARNING
To reduce the risk of fire, injury, and damage to this product as a result of a short circuit, never submerge the power tool, battery, or charger into a liquid, and do not permit liquids to leak into it. A short circuit may be caused by corrosive or conductive liquids such as seawater, certain industrial chemicals, and bleaches, or products containing bleaches, etc.
BATTERY
- This product is equipped with lithium-ion-type rechar-geable batteries. The operating time after every use will depend on the type of work that is performed.
- These batteries described in this user‘s manual have been designed to provide a maximum problem-free operating lifetime. Like all other batteries, they wear out over time.
WARNING
Do not take this backpack battery apart or attempt to replace the individual battery cells. Tampering with batteries may cause serious burns.

If you wish to achieve the maximum operating lifetime of this battery then thoroughly read its user‘s manual and properly study everything.

NOTE
It is a good habit to disconnect the charger and remove the backpack battery from the charger when it is not used. Instructions for storing the backpack battery for a period longer than 30 days: Store this lithium-ion type battery at a temperature lower than 26°C, however not in frost, in a dry location.

Do not store the battery in a discharged state; charge it fully for storage and after no more than 6 months fully recharge it again.
Clean the surface of the battery using a rag or a soft non-metal brush. Prevent the plastic parts from coming into contact with organic solvents and fluids – this would damage the plastic. Furthermore, prevents contact with water.

TAKING THE BATTERY OUT AND PREPARATION FOR RECYCLING
According to Directive (EU) 2012/19, unusable electrical equipment must not be thrown out with communal waste but rather must be handed over for ecological disposal at an electrical equipment collection point because it contains components that are hazardous to the environment. The battery must be removed from the electrical equipment, before the equipment is handed over for ecological disposal, at a battery collection point separately. You can find information about electrical equipment waste and battery collection points and collection conditions at your local town council office or your vendor.

DISPOSAL OF TRANSPORT PACKAGING
Throw packaging materials into a container for the respective sorted waste.

WARNING
After removing the battery from the product for the pur-pose of its disposal or recycling, cover its contacts using strong adhesive tape. Do not attempt to destroy or disassemble the battery nor remove any of its parts. Li-Ion-type batteries must be recycled or disposed of in an ecological manner. Never touch the contact with metal objects and/or parts of the body as this may result in a short circuit. Prevent access to children. Not respecting this warning may lead to the injury of persons or property damage.

Troubleshooting

Problem

| Cause|

Remedy

---|---|---
The power tool is not working.| There is no electrical contact between the power tool and the battery.| Reconnect the battery to the power tool.
The battery is flat.| Charge the battery.
The battery or the power tool is too hot.| Allow the battery or the power tool to cool down until the temperature falls below 60°C and restart the power tool.
Non-functioning battery cable or plug.| Have the repair performed at an authorized service center/vendor.
The power supply voltage is lower than the lowest protective voltage.| Charge the battery.
The battery cannot be charged.| The temperature of the battery exceeds or falls below the specified charging temperature range.| Wait until the battery reaches a normal temperature and the charging process will start as soon as the battery returns to the temperature range of 10°C to 60°C.
No electrical contact between the battery and the charger.| Place the battery into the charger.
Faulty connection between the charger and the power supply.| Insert the plug of the charger’s power cord into a power source.
During the charging process, the LED indicators with 5 diodes will turn off.| The battery is too hot.| Wait until the battery reaches a normal temperature and the charging process will start as soon as the battery returns to the temperature range of 10°C to 60°C.
The battery may be damaged.| Watch the LED indicator on the charger. If the RED LED is flashing or is turned off, the battery is damaged.

LED ABNORMAL STATE INDICATION

LED ABNORMAL STATE INDICATION LED ABNORMAL STATE INDICATOR – ONLY RED COLOUR

Long flashing, duration of 1 second
Short flashing, duration of 0.2 seconds Indicator repeat duration for an abnormal state: approx 1.6 seconds

LED abnormal state indicator (only red color)| Cause| Solution
---|---|---
| 3 long flashes and 1 short flash| Sampling error on the front part.| Check for interrupted circuit R39/R40. Replace U3
| 3 short flashes and 1 long flash| NTC is disconnected| 1. Check that there is not a bad contact at the thermal cable.

2. Check whether there is a voltage relative to the ground at the 4 main testing points NTC0/NTC1/NTC2/NTC3 in the respective range/the voltage is 0.8–2.3 V)

| 1 long flash and 1 short flash| Low battery voltage| Arrange a timely recharge in the event of a standard discharge below the voltage
| 1 long flash and 3 short flashes| Short circuit pro- tection| There is a short circuit on the side of the power supply, and the problem related to the short circuit must be eliminated.
| 1 long flash and 4 short flashes| Discharge caused by a high current| The cause is the connected power tool. Reduce the load on the power tool, and then disconnect and reconnect the battery cable.
| 2 long flashes and 1 short flash| COM error| 1. Check that there is not a bad contact at the COM cable.

2. To protect the motherboard, replace the non-functioning power supply device or charger, and then replace the battery.

| 2 short flashes and 1 long flash| Discharge caused by a high temperature| Allow the battery to cool down until its temperature is less than 60˚C and then restart.
| 2 short flashes and 2 long flashes| Discharge caused by a low temperature| Allow the battery to heat up until its temperature is higher than 10˚C and then restart.
| 1 long flash and 2 short flashes| Battery cell error| 1. Check that every battery cell is correctly connected.

2. Check that the difference in voltage between each battery cell is within the tolerance of 1 V.

3. Make sure that the voltage in the lowest part of the battery cell increases for 10 minutes of charging.

4. Replace the motherboard.

5. Replace the battery cell.

ATTENTION

Disassembly of the battery and work on the internal parts of the battery for inspection or repairs may only be performed at an authorized service center for the Extol® brand.
If requested by the buyer, the seller is obliged to provide the buyer with the warranty conditions (rights relating to faulty performance) in written form according to law.