When you guys get the extended batteries...do they use the original charger that came with the phone? Or how about with a car charger, does it matter? I assume there's no change but and just curious.
It does not matter. The charger does not plug into the battery, it plugs into the micro-USB port. An extended battery will work, as long as it was designed for this particular model. There are 2 I would recommend, the Seidio 1600 and the HTC 2750. The Seidio will not add any bulk to your phone, but the HTC one will, and it includes the extended battery door that it will require. Neither is on sale yet though, so you will have to wait a little while to order them.
"These are the Droids you're looking for..."
Thanks for the info. I'll probably wait and see if I need one, but the Siedo sounds interesting. I'm sure it won't add a whole lot of life but the fact that it'll fit with the stock back plate means it'll fit in the Otterbox or Siedio case that I plan to get.