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7 Charger Safety
– Never store the battery in the trimmer or charger.
– Protect the battery from exposure to corrosive 
agents such as garden chemicals and de-icing salts.
– Protect the battery from exposure to conductive 
liquids such as salt water.
– Do not attempt to repair, open or disassemble the 
battery. There are no user-serviceable parts inside.
■ Leaking battery fluid is potentially harmful and can cause 
skin and eye irritation, chemical burns and other serious 
personal injury.
– Avoid contact with skin and eyes.
– Use an inert absorbent such as sand on spilled 
battery fluid.
– In the event of accidental contact, immediately rinse 
the contact area thoroughly with mild soap and 
water.
– If fluid gets into your eye(s): Do not rub. Rinse water 
over the open eye(s) for at least 15 minutes and 
seek medical attention.
■ A battery fire can be dangerous. To reduce the risk of 
severe personal injury and property damage in the event 
of fire:
– Evacuate the area. Fire can spread rapidly. Stay 
clear of any vapors generated and maintain a safe 
distance.
– Contact the fire department.
– Although water can be used to put out a battery fire, 
use of a multi-purpose dry chemical fire extinguisher 
is preferable.
– Consult the fire department regarding proper 
disposal of a burned battery.
■ Dropping the battery could result in personal injury or 
property damage. To prevent the battery from falling 
during removal:
– Place the trimmer on a level surface.
– Position your hand behind the battery while pressing 
the locking lever. Use care when ejecting the 
battery.
7.1 Warnings and Instructions
WARNING
■ To reduce the risk of fire, electric shock and other 
personal injury or property damage:
– Read and follow all cautionary markings on the 
charger, battery and trimmer and all instructions in 
this manual before using the charger.
– Charge only genuine STIHL AK or STIHL AP series 
batteries. Other batteries may burst, catch fire or 
explode, resulting in personal injury and property 
damage.
– Do not handle the charger, including power supply 
cord and plug, with wet hands.
– Never use a damaged charger.
– Never charge malfunctioning, damaged, cracked, 
leaking or deformed batteries.
– Never store a battery in the charger.
– Operate the charger only indoors, in dry rooms and 
within an ambient temperature range of 41 °F to 
104 °F (5 °C to 40 °C).
– Keep the charger out of the reach of children.
7 Charger Safety
– For indoor use only.
– Keep the charger dry. Protect it from 
rain, water, liquids and damp conditions. 
Never insert a wet battery or use a wet 
charger.