2*18650 Li-ion battery cells,7.4V 2.6Ah
Compatible with ALL Magicshine bike lights with Round Plug, recommended for smaller lights MJ-900 and MJ-900B.
The battery is more ergonomic and straps neatly to your frame using two 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