Hi, I was wondering if anybody has ever modified a harmony 650 to recharge it's batteries via USB like the 700? I have some NiMh batteries and I have to charge them so often that the 650 is pretty much useless to me unless I can find a way to modify it to charge by USB.

I don't care if it voids the warranty because it's useless to me otherwise. Yes I'm too cheap to buy a harmony 700 and I have some skills in electronics but I haven't cracked it open yet.