@JPBel
1.25 to 4.0
But what that has to do with charging the battys in low (300mah) or normal (500mah) mode? Sorry if I sound stupid, but I am a noob about all of this.

Edit:
What I don't get is what the Amps have to do with the mah and voltage. Isn't the Amps only the limit that the batty can handle?