User guide

M80 EVB User Guide
M80_EVB_User_Guide_V1.2 - 45 -
OFF state.
4. Monitor the VBAT voltage and charging state via “AT+CBC”.
5.6.2 Charging mode
1. Connect the battery to the battery contact pin.
2. Insert the plug of the 5V power adapter.
3. Switch S1 to ON state, Switch S2 to OFF state, Switch S3 to OFF state, and Switch S4 to
OFF state. The LED L1 on the EVB will be bright.
4. Press the K1 button (PWRKEY) for about 1 second. The LED L4 will be light and indicates
the module is in the working mode. When L4 is bright, the module begins running.
5. Switch S2 to ON state to start the module.
6. Monitor the VBAT voltage and charging state via “AT+CBC”.
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