0458-805-8621-A
24
English 
12 LED Diagnostics and Acoustic Signals
1 A short beep
The acoustic signal works as it should.
2 Four long beeps
The battery's charge is low. Recharge the battery.
3 Rapid succession of short beeps
There is a malfunction in the battery. The signal stops 
automatically after a few seconds. Do not attempt to 
charge, use or store the battery. Replace the battery.
These LEDs can glow or flash green or red.
► Be aware that your ability to hear the acoustic signal may 
be reduced when wearing hearing protection.
12.1.2 Power Tool Status
When the battery is connected to the power tool, the same 
LEDs on the battery will indicate the status of the power tool.
If three LEDs glow red continuously: the power tool motor is 
too hot. Allow the motor to cool down.
If three LEDs flash red when you activate the trigger switch: 
the power tool has an electrical malfunction. Do not operate 
the power tool. Have it checked by an authorized STIHL 
servicing dealer before use or storage.
For troubleshooting information, @ 24.
12.1.3 Charge Status
The LEDs and acoustic signals on the battery also indicate 
the battery's state of charge.
To determine the battery's state of charge:
► Press the button (1) on the backpack battery.
A single short beep will be emitted. The LEDs on the battery 
will glow or flash green for about 5 seconds and indicate the 
state of charge (see illustration). 
For example:
If six green LEDs glow continuously: full charge.
If one green LED is flashing and four long beeps are emitted: 
less than 20 % charge.
12.2 STIHL AP Battery
12.2.1 Battery Status
Four LEDs show the status of the battery. These LEDs can 
glow or flash green or red.
If one LED glows red continuously: the battery is 
either too hot or too cold. Allow the battery to 
warm up or cool down gradually at an ambient 
temperature of about 50 °F to 68 °F (10 °C to 
20 °C).
If the four right side LEDs flash red and a rapid 
succession of several short beeps is emitted: the 
battery has a malfunction and must be replaced. 
Do not attempt to charge, use or store the 
battery.
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0000-GXX-3229-A1 
0000-GXX-2673-A0
100 % 0 %