10 LED Diagnostics
WARNING
Since the trimmer and charger heat up during the charging
process, do not charge the trimmer on a combustible surface
or in a location where combustible gases, liquids, vapors,
dusts or other combustible materials or substances are
present, @ 6.
To charge the trimmer:
► Remove the activation key, @ 13.2.
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2
► Insert the charger plug into a properly installed wall
outlet (6) with the same voltage and electrical frequency
stated on the charger's rating plate (5).
► Push the connector (3) into the trimmer's charging
socket (2) until it stops.
The LEDs on the trimmer (1) glow green during charging
and show the state of charge.
When the LEDs on the trimmer go out, the charging
process is complete and the charger will shut itself off.
► Remove the charger from the trimmer and disconnect the
charger plug from the wall outlet when charging is
complete.
A trimmer is not fully charged when it ships from the factory.
STIHL recommends that you fully charge the trimmer before
using it the first time.
Operate the charger only indoors, in dry rooms and within an
ambient temperature range of 32 °F to 104 °F (0 °C to
40 °C).
0458-718-8221-A
6
5
3
4
The trimmer heats up during operation. The charging
process begins only after the trimmer and its integrated
battery have cooled down sufficiently.
Charging time depends on a number of factors, including the
condition of the integrated battery and the ambient
temperature. For a complete list of approximate charging
times, see www.stihl.com/charging-times.
Operation of the trimmer is disabled during charging and any
time the trimmer is connected to the charger.
10 LED Diagnostics
10.1 Trimmer Status
LEDs on the trimmer show the status of the power tool and
its integrated battery.
If three LEDs glow red continuously: the integrated battery
is either too hot or too cold. Allow the trimmer to warm up or
cool down gradually at an ambient temperature of about
50 °F to 68 °F (10 °C to 20 °C).
If three LEDs flash red when you activate the trigger switch:
the trimmer has an electrical malfunction. Do not operate or
charge the trimmer. Have it checked by an authorized STIHL
servicing dealer before use or storage.
For troubleshooting information, @ 22.
10.2 Charge Status
The LEDs also show the trimmer's state of charge.
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