Replacement GE 29514 Cordless Phone Battery - 3.6V 700mAh Ni-MH Rechargeable. Ensure your cordless phone is ready with this brand new replacement battery compatible with GE models including 2101, 2103, 29510, 29512, and many others. Specifications: 3.6 Volts, 700mAh / 2.52Wh capacity, Ni-MH chemistry. Dimensions: 45.90 x 31.20 x 10.70mm.