For my phone after four years of a new battery had become necessary. The old battery lasted into the early days much more than a week in standby mode, a moderate use of the calculation. The new battery must be charged, however, much earlier - at vergelichbarer use. Too bad that the previous period will no longer be achieved, because as I have still more to lug my charger (or at least a second battery purchase) if I'm a few days on the road. After all, I have a fully functional replacement product which is sufficient for the domestic everyday life.