Duracell Rechargeable AAA Fine Pen Battery 900 mAh 2'li Package - AliExpress
Amazon.com: Duracell CR123A 3V Lithium Battery, 2 Count Pack, 123 3 Volt High Power Lithium Battery, Long-Lasting for Home Safety and Security Devices, High-Intensity Flashlights, and Home Automation : Health & Household