Fenix ARB-L14-2200U Battery

A great alternative to standard AA alkaline batteries, the Fenix ARB-L14-2200U is a 14500 lithium-ion rechargeable battery that works in devices that require AA batteries. It is the same size and voltage as a standard AA's, but has a built in USB Type-C port which allows you to recharge the battery for up to 300 cycles. Better performance with multiple circuit design protections, and greater power density makes this a longer lasting, more reliable choice.