Once you have soldered your kit together, it’s time to start monitoring your battery levels. For this example, we will be hooking up the indicator to a 3.7V lipo battery that is powering an Arduino ...

Arduino developers and hobbyists looking for a portable battery shield to powered their projects might be interested in a new shield called the EnergyShield Arduino rechargeable battery.

This project is a great example. [Scott Daniels] takes a look at the other voltage measurement options available to AVR chips used by Arduino.

This morning a new one came our way. [Johan Kanflo]’s AAduino is an Arduino clone with an onboard RF module that fits within the form factor of an AA battery.

This allows the AAduino to slot into the battery slot like a regular battery. Granted the AAduino isn't going to match an Arduino or Raspberry Pi in terms of what it can do.