3.6V 14.5Ah "D" size replacement battery for PGX901/PGX911 indoor & outdoor sirens. * Note - This part must be ordered in carton quantity (multiples of 15). BATT13.0-3.6V - SS&Si Dealer Network
DSC ER34615M-T1 Battery Non-Rechargeable Pack for DSC Wireless Outdoor – XML Battery