With a balanced,same port 45A discharge.                     Protection board with overcharge protection,over discharge protection,over current protection,short circuit protection,temperature protection.          When we connect BMS with cells or disassemble BMS from battery pack,the following order and regulations must be complied with to avoid damage of components of BMS and problems of not protecting of cells.          In order to achieve the best performance of BMS and to run the longest distance,all the battery must be matched well(Each battery voltage less than equal 0.05V,IR less than equal 15 mΩ,capacity less than equal 30mAh)to make sure the better consistency of the battery.          Order of connection:Connect charging/discharging wire ,battery pack negative wire,After confirm the wires are connected OK,plug the connector cable in the BMS          Color:Silver +Green          Material:metal +PCB                                Package Contents:                     1 x 20S 45A Lithium Battery Protection Board          1 set x Cable                     Only the above package content, other products are not included.          Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.