3. Getting Started
IMPORTANT: It is the responsibility of the user to verify the
calibration of the instrument before each use. See section 7.
How to Charge Lithium-ion Battery
1.
Open the battery compartment. (Figure 3 - Figure 5)
2. Check the fuel gauge status
of the Li-ion battery. Press the
micro switch on the battery.
Note which LEDs light up. See
the table below to determine
the power status of the battery.
The LEDs will turn off after three
seconds. (Figure 1)
Fuel Gauge
Volt of battery <3.5V
3.5V ≤ Volt of battery <3.8V
3.8V ≤ Volt of battery
4
LED1
LED2
LED3
Figure 1
LED1
LED2
ON
OFF
ON
ON
ON
ON
©2023 Johnson Level & Tool
Micro
Switch
LED3
OFF
OFF
ON