I use a 2600mah. I keep it as a backup spare when I am running around. I normally stick to stock battery. Since using EWJET 2.1 custom ROM, my stock battery will last me just over a day so I never bother using the 2600mah as much. When I do use it, I can run it over 3 days. I do make over 2-3 hours of phone calls a day.
HTC One M7 and M8 Android 4.4.3 kernel source … more
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