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25 Troubleshooting Guide
25.2 Charger
Runtime is too short. Battery not fully
charged.
► Charge the battery, @ 13.
Useful life of battery
has been reached or
exceeded.
► Have the battery checked by an authorized STIHL servicing
dealer.
Battery is not being
charged even though
LED on charger
glows green.
1 LED glows
red.
Battery too hot / too
cold.
► Allow the battery to warm up or cool down gradually at
ambient temperatures of about 50 °F to 68 °F (10 °C to
20 °C).
► Operate the charger only in enclosed, dry rooms at ambient
temperatures of 41 °F to 104 °F (5 °C to 40 °C).
Always remove the battery before carrying out any inspection, cleaning or maintenance.
Condition LEDs on
Battery
Cause Remedy
Condition LEDs on
Charger
Cause Remedy
LED on charger
flashes red.
LED flashes
red.
No electrical contact
between charger and
battery.
► Remove the battery and reinsert it into the charger.
Malfunction in
battery.
► Remove the battery and reinsert it into the charger.
► If the LED continues to flash, do not attempt to charge.
If 4 LEDs on the battery are flashing, it has a malfunction
and must be replaced. Otherwise, have the battery checked
by an authorized STIHL servicing dealer.
Malfunction in
charger.
► Have the charger checked by an authorized STIHL
servicing dealer.
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