If you have a snap on case..you may be able to use the 1820MAH battery with the case and without the battery cover. It will be a tight fit, like you mentioned. It will be a good idea for the cooling of the battery though. No reason to double insulate that baby and keep it cooking under heavy use. It may be a good idea for anyone with an plastic outer case to use the phone without the battery cover, perhaps with some smaller spacers to keep the battery from perhaps jolting loose if you drop the phone or whatever.
That is one of the reasons you seldom see first party hard cases. The phones weren't designed to be covered up completely all the time. It doesn't allow them to expel heat the same way and the first party company does not want to be liable for any failures do to excess heat build up.
That is one of the reasons you seldom see first party hard cases. The phones weren't designed to be covered up completely all the time. It doesn't allow them to expel heat the same way and the first party company does not want to be liable for any failures do to excess heat build up.