Primary Lithium Battery: Energizer AA 1.5V, 3000mAh Ultra Capacity L91VP (Non-Rechargeable, 4.5Wh, 2.0A rate) - UN 38.3 Passed
Energizer Ultimate Lithium AA Battery – Dependable Expendables
USB Rechargeable Batteries 1.5V/1500mAh Lithium Ion AA Battery with 4-in-1 Micro USB Charging Cable 1.5h Quick-Charge Built-in Integrated Safety Circuit Protection Double A Batteries(4 Pack) - Newegg.com