# 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

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)