Replacement Ni-MH 3.6V 700mAh Cordless Phone Battery for AT&T E6012B. Restore your phone's talk time with this high-quality battery, also compatible with models like E6013 and E6014. Specs: 3.6V, 700mAh / 2.52Wh, Ni-MH chemistry, and measures 45.90 x 31.20 x 10.70mm.