Gemini 2-Cell 2600MAH Battery

Designed to be compact and lightweight, the 2-Cell Battery is ideally suited on your helmet or head strap at just 122g. All batteries come with an on board coefficient thermistor to detect high temperatures. As a safety feature the power is shut off if temperatures ever get too high. The battery pack is built with the highest grade lithium-ion battery cells produced by Samsung.

COMPLETELY WEATHERPROOF!
Sealed within its hard-case shell, the circuitry and cells are protected from the harsh elements. The 2-Cell Battery is 100% protected from water ingress and is completely weatherproof. Rain or shine, this battery will give you the power you need.