ER14250PCB 3.6V LITHIUM BATTERY WITH TAGS 3 PIN PCB TC45, 1/2 AA, 1/2AA - Radio Parts
Amazon.com: EBL 1/2 AA Size 14250 ER14250 3.6V Lithium Batteries, 1200mAh High Capacity Batteries for Dog Collars and Baby Movement Monitor Alarm Systems and More (Non-Rechargeable) : Health & Household