Connector

JST connector - Shown above on the right, this two-pin JST connector is for plugging in single Lithium Ion/Lithium Polymer 3.7/4.2v batteries (not for older 3.6/4.1v cells)

LEDs

There are two LEDs on the board:

CHG - This LED is red while the battery is charging.
DONE - This LED is green once the battery is fully charged.

If both LEDs are on at the same time, it means the battery is damaged or isn't plugged in.

Switch

Rate switch - used to change between 100mA and 500mA charging mode. 100mA is labeled with 1 above the switch and L below the switch. 500mA is labeled with 5 above the switch and H below the switch.

This guide was first published on May 30, 2014. It was last updated on Nov 16, 2022.

This page (MicroLipo v2 Pinout) was last updated on Nov 10, 2022.

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