I just got a HP 2 Today, i used to have a HP1 that had a ac plug, the HP2 doesn't. The place where i got it from gav me a wall wart USB adapter for it. So i know on the HP1 it had to have batteries for replay options to work. So for my HP2, it will be 100 percent home use, so do i connect it to the wall all the time, that is what i plan to do. And it always asks me about charging the batteries, what do i do, i like to keep the screen on, so if plugged in, is that going to run down the batteries? Any help would be appreciated. Thanks.