Is anyone aware of a module/kit that comprises of a quick power-block (s.a. for Arduino), with 3.3-5V @ 1Amp-500mA output, and that can do the proper recharging (without damaging) the battery pack, and also auto-switch between mains and battery, when mains power is unavailable ?
I’ve been struggling to find such kits or modules, and my requirements range from 3.3V-5V, with output power rating of 300mA-2Amp, but happy to have a more specific solution. Of course, keeping costs low is one of the concerns. Any suggestions ?