Original Quality iphone 4 Battery * Full capacity of 3.7V 1420 mAH * This battery is 100% as the original. We offer 30 days return policy. If for any reason, this battery will not last as the original, then you can return it back for a full refund within 30 days. * Compatible APN"s: 616-0520, 616-0521, 616-0513, 616-0512 * This battery comes factory sealed, guaranteed brand new!