4*18650 Li-ion cells,7.2V 5.2Ah MJ-6116 USB battery pack. For the 2 cell version of this pack, see MJ-6112
Operating temperature 14-104F Discharge temperature 50-104F
The USB battery pack is more ergonomic and straps neatly to your frame using nylon straps
The new waterproof battery compartment design and high quality and large area silicone non-slip mat
All Magicshine batteries include a circuit with over-charge, over-discharge and short circuit protection meaning you can be sure that your Magicshine battery is safe to use and charge.