Panasonic KX-TCA14 Cordless Phone Battery 3.6 Volt, Ni-MH 1500mAh - Replacement For PANASONIC HHR-P505 Replacement Battery for Panasonic HHR-P505 - Ni-MH, 3.6 Volt, 1500 mAh. 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark