Led Diagnostics; Leds On The Battery; Led On The Charger - Stihl MSA 120 C Instruction Manual

13 LED Diagnostics

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 chain saw. If a
hot battery is inserted into 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.
13 LED Diagnostics

13.1 LEDs on the Battery

13.1.1 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).
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.
13.1.2 Chain Saw Status
When the battery is inserted in the chain saw, the same
LEDs on the battery will indicate the status of the chain saw.
0458-716-8221-D
If three LEDs glow red continuously: the chain saw motor is
too hot. Allow the motor to cool down.
If three LEDs flash red when you activate the trigger switch:
the chain saw has an electrical malfunction. Do not operate
the chain saw. Have it checked by an authorized STIHL
servicing dealer before use or storage.
For troubleshooting information, @ 24.1.
13.1.3 Charge Status
The LEDs on the battery also show the battery's state of
charge.
To determine the battery's state of charge:
1
► 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.

13.2 LED on the Charger

One LED shows the status of the charger. The LED can glow
green or flash red.
English
80-100%
60-80%
40-60%
20-40%
0-20%
33