inReach SE+/Explorer+ Battery and Charging Specifications

For charging purposes using any commercially available charger that charges USB devices should be fine to use on the inReach SE®+ or inReach Explorer®+ satellite communicator. The battery is not removable or replaceable. 

Battery Specifications:

1 battery, 1 cell, 3100 mAh at 3.8V

Battery - containing product information data sheet