After the original battery has begun to reduce very quickly after 2 1/2 years (just holds so still for a whole day - previously little more than two days), a replacement had to be found. How far (after a week of use) seems I have made with the iFoxEK a good grip. The nominal capacity is higher not only in the print, but actually affects on the stamina of 3 1/2 days he holds tight by before I again need to connect to the charger the phone. I'm very satisfied!
Addendum: over 4 days! Excellent! FYI: I have Cyanogenmod on my touch.