5 Maintain and Calibration
5.1 Charging
When the battery are low, the icon “ ” will
be displayed. The batteries should be charged
immediately.
Connect the gauge and the charger use the USB
cable, and then connect the charger with AC socket to
start charging.
It takes about 3~4 hours for fully charging.
You can also use other USB device (e.g. Laptop PC)
to recharge the gauge.
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