iFixit makes iPhone 4 repair easy: strictly tested, quality-ensured replacement parts, unmatched DIY fix kits, and free in-depth, accurate repair manuals.
Replace a 1420 mAh battery compatible with all iPhone 4 GSM and CDMA models (Not 4S), and does not require soldering. 3.7 Volts (V), 5.25 Watt Hours (Wh).