Made to last in freezing temperatures, this is a 21700 rechargeable battery from Nitecore called the NL2142LTP with a respectable 4200mAh energy storage capacity. This rugged battery is made to last in the coldest environments. An ideal companion for all 21700 compatible devices from Nitecore. The NL2140HP is a high performance battery capable of >8A discharge for high lumen lights and headlamps.