Powering an Arduino

Here is some resources about powering Arduino or other electronic projects:

General

• How to power an Arduino
• How to power a project
• What adapter?

Portable / Battery powered

For portable projects some info on battery usage.

• http://www.instructables.com/id/Powering-Arduino-with-a-Battery/
• https://learn.adafruit.com/all-about-batteries/overview
• https://www.open-electronics.org/the-power-of-arduino-this-unknown/

9V batteries are bad