PKELL ICR18500 Rechargeable Li-Ion Batteries 3.7V 1400mah with Button Top for Flashlight,Solar Garden Light(4pc)(They are Not AA,AAA Size Batteries) - Walmart.com
Lithium-ion Battery (14.8V, 18Ah) - BLUE ROV Solutions
15V V74PX Battery Adapter Fine Works Morini LP90 504 A220 10F15 10LR54 BLR154