Seeed Studio Battery Detector v1.0

The battery detector is able to work when the input voltage range is 3 to 4.2 volt. With the 3 on-board JST socket (1 x JST 1.0, 2 x JST 2.0), it can detect most batteries. If your battery’s has neither JST 1.0 nor JST 2.0 connector, don’t worry, there are 2 battery soldering pad which make the detector adapts to those battery with different connector.