Stay juiced up on the go thanks to the 3400mAh Flex3 PowerBank from LEDLENSER. Intended for use with various USB devices and select LEDLENSER models, this power bank uses a green design with a replaceable battery. The single 18650 Li-Ion 3.6v battery provides 3400mAh of battery capacity, while an IP65 dust and water resistance rating ensures this power bank holds up to the elements.