Overcharge Protection,Over Discharge Protection,Overcurrent Protection,Short Circuit Protection PCB, better heat dissipation effect. Multiple BMS connected in series, supporting the use of multiple slave boards in series, can be achieved using nylon column kits Connect and fix multiple BMS boards together Automotive grade locking buckle, automotive grade design locking connection buckle, more secure wire end connection,Simply pinch the buckle at the end of the wire to easily pull it out Supports almost all lithium batteries, such as lithium-ion batteries, lithium polymer batteries, lithium phosphate batteries, etc Charging Current:50A Usage Scenario:Power BMS Balance Function:Passive Balanced BMS Handware or Smart:SMART BMS Charge and Discharge Port:SPLIT PORT BMS Specifications:A:LTC6811-12S Slave Board/B:LTC6812-15S Slave Board/C:LTC6813-18S Slave Board Colour:As Shown Material:PCB Package Contents: 1 x protective board 1package x accessories Only the above package content, other products are not included. Note: Light reflection 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.