GreenWorks GL 900 User manual

82V RECHARGEABLE LITHIUM-ION
BACKPACK BATTERY
Read all safety rules and instructions carefully before operating this tool.
Owner’s Manual
TOLL-FREE HELPLINE: 1-855-470-4267
www.greenworkstools.com/82v-Commercial/
Model#:GL 900
(2907402)

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BATTERY
SPECIFICATIONS
Rechargeable Li-ion Battery
Model: GL 900
Rating: 82V DC, 900Wh
Charge time: up to 3 h
Weight: 16.5 lbs (7.5 kg)
SAFETY INFORMATION
WARNING
Read all safety warnings and instructions. Failure to follow the warnings and instructions may
result in electric shock, re and/or serious injury.
For the proper use, maintenance and storage of this battery, it is important that you read and
understand the instructions given in this manual.
To avoid serious injury, risk of re, explosion and danger of electric shock or electrocution:
• If the battery pack case is cracked or damaged, DO NOT insert into the charger. Replace the
battery pack.
• Do not charge the backpack battery with any other type of charger. For use only with
Greenworks Li-ion Battery Charger (GC 400).
• Have servicing performed by a qualied repair person using only identical replacement parts.
This will ensure that the safety of the product is maintained.
• Risk of Fire and Burns. Do Not Open, Crush, Heat Above 100°C or Incinerate. Follow
Manufacturer’s Instructions.
WARNING
Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact
accidentally occurs, ush with water. If liquid contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation or burns.
SAFETY NOTES AND PRECAUTIONS
1. Do not disassemble the battery.
2. Keep battery out of reach of children.
3. Do not expose the battery to water. Always store battery in cool and dry environment.
4. Do not place the battery in high-temperature locations, such as near a re, heater, etc.
5. Do not reverse the positive terminal and the negative terminal of the battery.
6. Do not knock, strike, or step on the battery.
7. Do not solder directly onto the battery or pierce the battery with nails / edging tools.
8. Immediately discontinue use of the battery should it begin to feel hot, change color, change
shape, appears abnormal, emit unusual smells, or leak uid. Should uid make contact with
the user's eyes, do not rub eyes. Rinse eyes well with water.
WARNING
To avoid risk of re, electric shock, or electrocution:
• Do not use a damp cloth or detergent on the battery or battery charger.
• Always remove the battery pack before cleaning, inspecting, or performing any maintenance
on the tool.

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BATTERY
• Do not allow the battery pack or charger to overheat. If they are warm, allow them to cool
down. Recharge only at room temperature. When charging, make sure temperature is
between 10-40°C (50-104°F), -20-45°C(-4-113°F) for discharge.
• Keep the ventilation slots of the charger clear.
• Do not allow small metal items or material such as steel wool, aluminum foil, or other foreign
particles into the charger cavity.
• Do not place the battery pack in the sun or in a warm environment. Keep at normal room
temperature.
• Do not use a battery pack that is damaged or modied. Damaged or modied batteries may
exhibit unpredictable behavior resulting in re, explosion or risk of injury.
• The battery pack cells may develop a small leak under extreme usage or temperature
conditions.
• If the outer seal is broken and the leakage gets on your skin:
• Use soap and water to wash immediately.
• Neutralize with lemon juice, vinegar, or other mild acid.
• If leakage gets in your eyes, follow instructions above and seek medical attention.
THE USE OF THE BATTERY
Transporting the Battery
Disconnect the battery from the power tool – even when carrying it for short distances. This
avoids the risk of accidental startup.
Carry the battery by the handle or on your back.
In vehicles: Properly secure the battery to prevent turnover and damage.
WARNING
Special precautions must be taken when transporting a damaged or malfunctioning battery.
To reduce the risk of accidents, always contact your GREENWORKS servicing dealer before
transporting such a battery.

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BATTERY
Cleaning the Battery
1. Always clean dust and dirt off the battery before use. Do not use any grease solvents when
cleaning.
2. Clean plastic surfaces with a cloth. Do not use aggressive detergents. They may damage the
plastic.
3. Do not spray the battery with water.
4. Do not use a pressure washer to clean your battery. This may damage parts of the battery
and cause malfunctions.
Storing the Battery
1. Disconnect the battery from the power tool or charger.
2. When the battery is not in use, put it in a safe place so that it does not endanger others.
Secure it against unauthorized use.
3. Store the battery out of the reach of children.
4. Store indoors in a dry and safe location. Protect it from dirt and damage.
5. To ensure maximum battery life: Store with a charge of about 40%.
6. When battery pack is not in use, keep it away from other metal objects, like paper clips,
coins, keys, nails, screws or other small metal objects, that can make a connection from one
terminal to another. Shorting the battery terminals together may cause burns or a re.
7. Do not store spare batteries unused for extended periods of time. If you have multiple
batteries be sure to use them in rotation.
Notes on Cable
1. Check the adapter and its cable and plug for signs of damage. Never use a damaged adapter,
cable or plug.
2. Make sure the insulation of the cable and plug is in good condition.
3. Straighten a twisted cable before use.
4. Position the cable so that it cannot be reached or damaged by the cutting or working
attachment of the power tool being used.
5. Do not chafe, squash, jerk or damage the cable. Protect it from heat, oil and sharp edges.
6. Do not use the cable for any other purpose. Do not use the cable for carrying or hanging up
the battery or power tool. Do not tug the cable.
7. Position the cable so that it does not endanger others. If mishandled there is a risk of tripping
or stumbling.
Notes on Operation
Disconnect battery from the power tool:
• when carrying out tests and adjustments or cleaning
• before working on the power tool's cutting or working attachment
• before leaving the machine unattended
• when transporting
• storing the machine
• before performing repairs and maintenance work
• in the event of a malfunction or in an emergency
This avoids the risk of accidental startup.

5
BATTERY
Before Starting Work
Check that the battery is in good condition – refer to appropriate chapters in the instruction
manual.
• Check condition of housing parts.
• Check condition of straps.
• Make sure cable, plug and adapter are not damaged.
• Depress push button to activate the LED display.
• When push button, acoustic signal should beep.
Do not continue using the battery if parts of housing or straps are worn, cracked or broken –
contact GREENWORKS servicing dealer.
To reduce the risk of personal injury, use the battery only if it is in good working order.
Do not use the battery if any of its components are damaged.
For emergencies: Practice quickly opening the fastener on the waist belt, loosening the shoulder
straps and setting down the battery. To avoid damage, do not throw the battery to the ground
when practicing.
During Operation
WARNING
The battery is equipped with a visual and acoustic signal. Your ability to hear the acoustic
signal may be reduced when wearing hearing protection.
The battery is carried as a backpack.

BATTERY
6
The battery is designed to be operated by one person only. Do not allow other persons in the
work area.
Make sure you always have good balance and secure footing.
Never work with the battery in trees, on roofs or on a ladder or other areas with poor footing.
Make sure the cable cannot become entangled or snag on objects – position and secure the
cable carefully before starting work.
If the battery is subjected to unusually high loads for which it was not designed (e.g. heavy
impact or a fall), always check that it is in good condition before continuing work. Do not continue
operating the battery if it is damaged. In case of doubt, contact your GREENWORKS servicing
dealer.
After Finishing Work
Clean the battery – see "Cleaning the Battery".
ASSEMBLING THE BATTERY
Connecting the Adapter
1. Insert the plug (1) of one side into the socket (2) of the battery – line up the lugs on the plug
with the slots in the socket.
2. Push the plug into the socket until it stops, (3) then turn it clockwise until the plug's latch (3)
engages audibly.
3. Fit cable (4) into the cable duct (5) and wind through the housing – see also "Positioning the
Cable".
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2
3
5
4

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BATTERY
4. Insert the plug (6) on the other side into the socket (7) of the adapter – line up the lugs on the
plug with the slots in the socket.
5. Push the plug into the socket until it stops, (8) then turn it clockwise until the plug's latch (8)
engages audibly.
Positioning the Cable
The cable can be tted in different cable ducts depending on whether the power tool is being
operated next to or behind the user:
Fit the cable in one of the lateral cable ducts and push it into place.
Always use the cable outlets at the side on which the power tool is held and controlled.
WARNING
To reduce the risk of accidents, never lay the cable diagonally – it may snag on objects.
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6
8

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BATTERY
If the cable is too long, attach it to the retainer on the bag.
FITTING THE HARNESS
Adjusting the Harness Straps
APull the ends of the straps downward to tighten the harness.
B Lift the tabs of the adjusters to loosen the straps.
CClose and lock the quick-release fastener by pushing it together.
D Squeeze the hooks to open the quick-release fastener.
A
B
CD

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BATTERY
Put on the shoulder strap.
1. Fasten and adjust the waist belt (1) so that it rests comfortably on your hips – thread the end
of the belt through the loop (2) – do not let the strap hang down.
2. Adjust the harness straps (3) to the correct length.
3. Adjust chest strap (4) to correct length and fasten it.
The back padding must t rmly and securely against your back.
Removing Harness
• Open the quick-release fasteners on the waist belt and chest strap.
• Loosen the harness straps by lifting the sliding adjusters and then take off the battery.
Throwing Off the Machine
WARNING
The battery must be quickly thrown off in the event of imminent danger. The waist belt and
chest strap must be opened before throwing the battery to the ground.
Pouch
Accommodates adapter during work breaks and after nishing work.
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4
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2

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Secure the pouch (1) to the waist belt only in the positions shown.
1. Attach pouch to waist belt.
2. Insert the adapter (2).
3. Close the hook and eye fastener (3) – the adapter is held in the pouch.
WARNING
Never transport metallic, pointed or sharp objects in the pouch. They may bridge the contacts
in the adapter and cause a short circuit.
ACOUSTIC SIGNAL
The battery emits acoustic signals as well as optical signals.
A short beep
• This signal is activated by pressing the button on the battery. Meaning: Acoustic signal works
as it should.
B short beep once every 10 sec
• Meaning: The battery is less than 20% capacity.
C short beep once every 2 sec
• Meaning: Malfunction in battery – see "Troubleshooting".
BATTERY
10
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