Amazon.com: 1/2 AA Cell 3.6V High Energy Lithium Alarm Battery (Z3-LS14250) : Health & Household
Amazon.com: Saft LS 14250 1⁄2 AA-size 3.6 V Primary Lithium-Thionyl Chloride 1000 mAh Lithium Battery (5pcs) : Health & Household
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