High Capacity Disposable SAFT LS 14250 LS14250 1/2 AA 3.6v lithium battery | eBay
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