Hitech - 2 Pack Ni-MH Replacement Cordless Phone Batteries for Uniden DCT5280, DCT5285, DCT5285-2; Siemens 2400, 2402, 2410, 2415, 2420, 4200, 4210, 4215, 8800, 8825, 4G8800HS, and 4G8825SYS Phones 2-pack of Hitech rechargeable AA batteries Capacity: 2000mAh, low-self discharge (longer running time in your phone, longer standby time) Voltage: 1.2V; Chemistry: Ni-MH Charges up to 300 times before needing replacement. Saves money and the environment! Guaranteed compatible with the listed phones, as well as any other device that requires AA batteries