Instruction Manual

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English 9 LED Diagnostics and Acoustic Signals
► Push the AP Adapter into the charger (5) until it stops.
The LED on the charger (4) 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.
A battery is not fully charged when it ships from the factory.
STIHL recommends that you fully charge the backpack
battery before using it the first time.
Operate the charger indoors in a dry room. For optimum
performance, STIHL recommends operating the charger
within an ambient temperature range of 41 °F to 104 °F
(5 °C to 40 °C).
The battery heats up during operation of the power tool. If a
hot battery is connected to the charger, it may be necessary
for it to cool down before charging starts. The charging
process begins only after the battery has cooled down
sufficiently.
Charging time depends on a number of factors, including
battery condition and the ambient temperature. For a
complete list of approximate charging times, see
www.stihl.com/charging-times.
9.1 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 Three short beeps
The Bluetooth® signal is switched on or off.
3 Six long beeps
The battery's charge is low. Recharge the battery.
4 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, red or blue.
If the first LED on the right side glows blue for about three
seconds and three short beeps are emitted: the Bluetooth
®
interface is turned on.
9 LED Diagnostics and Acoustic Signals
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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