The Panasonic HHR-P402A 3.6V NiMH Rechargeable Cordless Telephone Battery is a replacement battery for Panasonic cordless telephones: KX-TG: 2205, 2215, 2217, 2227, 2237, 2239, 2247, 2257, 2267, 2287, 2700S, 2720S, 2730S, 2740S, 5100M, 5110M, A510M and A270S.Features: Rechargeable NiMH chemistry 3.6V power 1000mAH capacity