Yes, two AA batteries at 1.5v each would equal only 3 volts when connected in series. The Arduino needs 5v so [AI] decided to use a MAX756 DC-to-DC step-up regulator to maintain a steady stream of 5v.

I made this amazing battery pack using 18650 cells, performing about 3X better than a LiPo battery of roughly the same weight and size. So instead of flying for 15 min, now you can fly for 45 min.

DIY Arduino Nano multimeter with LiPo battery, charger and more. 10:59 am February 13, 2019 By Julian Horsey.

The Qduino Mini embedded processor board which made its debut on Kickstarter earlier this week will make it easier than ever for Arduino enthusiasts to design and build compact, battery-powered ...

Zaitronics Nexus RP2350 LiPo is a Raspberry Pi RP2350 board similar to the Raspberry Pi Pico 2, but with various improvements ...

Arduino Measures Remaining Battery Power With Zero Components, No I/O Pin. 22 Comments . by: ... but he provides example Arduino code showing how handy this can be for battery-powered projects.

A new Arduino is joining the devboard lineup. Welcome the MKR1000, and yes there's an IoT focus. According to the Arduino team it's a board that combines the functionality of the Zero and the ...