Premium truCELL High-Capacity Cordless Phone Replacement Battery for V-Tech 27910 / 89-0099-00 / 80-5848-00-00 / TL26158 / BT6822 / 89-1323-00-00 and MORE! Replaces ATT, GE, and V-Tech and more cordless phone batteries Designed to meet or exceed OEM specifications Chemistry Ni-MH, Capacity 700 mAh, Voltage 3.6 Constructed from premium nickel-metal hydride cells for quality and performance Guaranteed Quality ***3 Year Manufacturer's Warranty***