This is a very straightforward charger.
It will charge either Nimh or Lipo batteries.
It'll charge them at 1 Amp, 2 Amps or 3 Amps.
It features two buttons - one to select options and one to start the charge.
It runs off the mains in any country in the world (UK plug supplied).
For a foolproof charger, there's little that's going to be simpler than this - especially if you want the facility to charge both types of modern battery.