3.6v lithium battery 1/2aa by Casil (2 Pack) | 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
Tadiran Batteries SL 750 T Non-standard battery 1/2 AA U solder tab Lithium 3.6 V 1100 mAh 1 pc(s) | Conrad.com
SAFT, Lithium, 1,200 mAh Capacity, Battery - 4FJL3|LS14250BA - Grainger
Xeno Energy XL-050F 1/2 AA 3.6V Lithium Battery - Walmart.com
1/2AA Lithium Battery for USB Data Loggers - Gilson Co.