10 LED Diagnostics
► Position the power supply cord (2) so that it will not be
stepped on, tripped over, come in contact with sharp
objects or moving parts or otherwise present a tripping
hazard or be subjected to damage or stress.
9.2
Charging
WARNING
STIHL batteries contain safety features and devices which,
if damaged, may allow the battery to generate heat, rupture,
leak, ignite or explode. Never charge a malfunctioning,
damaged, cracked, leaking or deformed battery or use a
charger that has been damaged. Never insert a wet battery
or adapter. Never use a wet charger. Follow all product-
specific warnings and instructions accompanying your
battery and charger.
A battery is not fully charged when it ships from the factory.
STIHL recommends that you fully charge the battery before
using it the first time.
Operate the charger only indoors, in dry rooms and 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.
0458-819-8621-A
To charge an AP battery:
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1
► 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 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 will shut itself off.
► Remove the battery from the charger and disconnect the
charger's power supply cord from the electrical outlet.
► Charge STIHL AP series batteries only with genuine
STIHL AL 101, AL 300 or AL 500 series chargers.
10 LED Diagnostics
10.1 LEDs on the Battery
10.1.1 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).
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