Philips SJB1142 Cordless Phone Battery Replacement For 3 AA w/Mitsumi - Panasonic HHR-P505, Battery Replacement Battery for Panasonic HHR-P505 - Ni-MH 3 AA w/Mitsumi, 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