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 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.

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.