The Panasonic HHR-P105A Ni-MH Rechargeable Cordless Telephone Battery is a replacement battery for the following Panasonic cordless telephones: KX-TG: 2420W, 2420B, 2421, 2422, 2431, 2432,2620B, 2620W, 2621W, 2622W, 2631W, 2632B.Features: Rechargeable Ni-MH chemistry 2.4V power 2 cells 830mAh capacity