# SafePI 1.0

SafePI is an expansion board for RaspberryPI 1 model B, 2B or 3 providing power supply protection and safe shutdown
by using 4 common available AA rechargeable Ni-MH batteris

## Features

 * It notify the Raspberry when primary power is absent on a configurable GpIO (pin 36 or 38) and then give enough time to shutdown from the batteries. 
 * When the RPi is on and the primary power is connected, it recharge the batteries.
 * It provide safe voltage regulator giving the ability to power the RPi from 8V to 25V. 
 * Battery drain when switched off if minimal (less than 10mA/h)

![SafePI 1.0](/Safepi.jpg)