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11 LED Diagnostics and Acoustic Signals
Charging time depends on a number of factors,
including battery condition and the ambient tem‐
perature. For a complete list of approximate
charging times, see www.stihl.com/charging-
times.
To charge an AR battery:
3
1
2
4
5
3
► Push the plug of the connecting cord (1) into
the socket (2) of the AP Adapter (3) until it
stops.
► Push the AP Adapter into the charger (5) until
it stops.
The LED (4) on the charger glows green when
the battery is charging.
The LEDs on the AR battery glow green and
show the state of charge.
When the LEDs on the battery turn off, the
charging process is complete and the charger
will shut itself off. The AP Adapter can be
removed from the charger.
► Disconnect the power supply cord from the
electrical outlet when the charger is not in use
for extended periods of time.
► Charge STIHL AR backpack batteries only
with genuine STIHL AL 301, AL 301-4 or AL
500 series chargers.
To charge an AP battery:
1
2
► Push the battery (2) into the charger (3) until it
stops.
The LED on the charger glows green when the
battery is charging.
The LEDs (1) on the AP battery glow green
and show the state of charge.
When the LEDs on the battery go out, the
charging process is complete and the charger
0458-020-8601-A
5
4
3
4
will shut itself off. The AP battery can be
removed from the charger.
► Disconnect the power supply cord from the
electrical outlet when the charger is not in use
for extended periods of time.
► Charge STIHL AP series batteries only with
genuine STIHL AL 101, AL 301, AL 301-4 or
AL 500 series chargers.
11 LED Diagnostics and
Acoustic Signals
11.1
STIHL AR Backpack Battery
11.1.1
Battery Status
Six LEDs and an acoustic signal indicate the sta‐
tus of the battery.
1
2
3
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 sig‐
nal 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 continu‐
ously: 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 sev‐
eral short beeps is emitted: the
battery has a malfunction and
must be replaced. Do not attempt
to charge, use or store the bat‐
tery.
► Be aware that your ability to hear the acoustic
signal may be reduced when wearing hearing
protection.
English
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