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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.
12.1.2 Hedge Trimmer Status
When the battery is inserted in the hedge trimmer, the same
LEDs on the battery will indicate the status of the hedge
trimmer.
If three LEDs glow red continuously: the hedge trimmer
motor is too hot. Allow the motor to cool down.
If three LEDs flash red when you activate the switch lever
and trigger switch: the hedge trimmer has an electrical
malfunction. Do not operate the hedge trimmer. Have it
checked by an authorized STIHL servicing dealer before use
or storage.
For troubleshooting information, @ 23.1.
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:
1
22
► 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 LED on the Charger
One LED shows the status of the charger. The LED can glow
green or flash red.
80-100%
60-80%
40-60%
20-40%
0-20%
For more information, @ 23.
If the LED glows green continuously: the battery
is being charged.
or
The battery is too hot or too cold for charging. To
determine, check the LEDs on the battery. If
there is one glowing red light, 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 LED flashes red: there is no electric contact
between the battery and the charger. Remove
and reinsert the battery.
or
The battery has a malfunction and must be
replaced. Check the LEDs on the battery. Do not
use or charge a battery if its LEDs indicate a
malfunction.
or
The charger has a malfunction. Have it checked
by an authorized STIHL servicing dealer before
use.
12 LED Diagnostics
0458-816-8621-A