2/3 AA Lithium Battery for USB Submersible Data Logger - Gilson Co.
Energizer Ultimate Lithium AA Batteries 57-EULAA4D B&H Photo
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