Energizer ER-P290 2.4-Volt Cordless Phone Battery 2.4-volt rechargeable NiMH battery for cordless phones Compatible with V-Tech, AT&T, and Panasonic brand phones Advanced, state-of-the-art engineering ensures long life and reliable performance Replaces AT&T, GE/Sanyo, Hi-Capacity, Recoton, and V-Tech batteries Can be charged on the cradle at any time; limited lifetime warranty