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12 LED Diagnostics and Acoustic Signals
12.1.2 Power Tool Status
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, @ 25.
12.1.3 Charge Status
The LEDs on the battery also show the battery's state of
charge.
To determine the battery's state of charge:
► Press the button (1) on the battery.
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 four green LEDs glow continuously: full charge.
If one green LED is flashing: less than 20 % charge.
12.2 STIHL AR Backpack Battery
12.2.1 Battery Status
Six LEDs and an acoustic signal indicate the status of the
battery.
1 A short beep
The acoustic signal works as it should.
2 Four or six (AR L) 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.
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 all 4 LEDs flash red: the battery has a
malfunction and must be replaced. Do not
attempt to charge, use or store the battery.
0000079877_002
20-40%
40-60%
60-80%
80-100%
0-20%
1
1
2
3
.......
0000-GXX-3229-A1