3S 11.1V 25A 18650 Li-ion Lithium Battery BMS Protection PCB Board With Balance Function.
 
CMB ( Charging manage Board ) integrates DC smart charging ( CC/CV) function and protection circuit together on one board, so that you can build a Li-Ion battery pack with full protection, and charge battery pack by a conventional DC power supply or adaptor, make Li-Ion battery pack more compact and portable.