The devices can be powered by a battery or other external power source.
Be sure to connect the positive lead of the power supply to
VIN, and ground to
When powering via
The input voltage must be between
The battery connector for the Expansion Board is a JST PHR-2 variant. The Expansion Board exposes the male connector and an external battery should use a female adapter in order to connect and power the expansion board. The polarity of the battery should be checked before being plugged into the expansion board, the cables may require swapping.