I have received a Sanyo NC-MQR01J/U battery charger for Ni-MH/Ni-Cd batteries. It won't be used for anything but a wireless Microsoft mouse. The back of the unit states: DC 1.2v 460mAx4 / 920mAx2. I am familiar with these terms. My question is this, can I use higher mha batteries and still be allright? Also, what would you recommend as a good, cheap Ni-MH battery to use in this charger. Thank-You for taking the time to read this post. I'm just trying to go a little green buy re-using batteries.