Wide Compatibility: The JKBMS Accessory Adapter Board is specifically designed for use with the JK BMS Battery Protection Board, ensuring seamless compatibility for a stable and reliable battery management system Easy Installation: Install with ease, no specialized skills required. With simple connection interfaces, this adapter board allows for quick setup, saving you time and effort High-Quality Materials: Crafted from premium materials, this adapter board ensures durability and long-lasting performance. Meticulously designed circuits guarantee stable battery protection and management functions Enhanced Battery Safety: Equipped with the JKBMS Battery Protection Board, it effectively safeguards your batteries against overcharging, over-discharging, and short circuits, ensuring a safer and more reliable battery system After-sales Service: We offer comprehensive after-sales support and service to ensure timely resolution and assistance whenever you encounter any issues during use, enhance your shopping experience NOTE: Auxiliary power supply interface,with positive on the left and negative on the right.When the repaired battery pack voltage is below 40V,an external power supply is required. 2.54 mm pin,pins with the same serial number next to the pin represent the same node.When there are multiple plugs in the sampling cable of the protection board,they need to be alternately inserted in two rows in sequence 2.0mm pin,pins with the same serial number next to the pin represent the same node.When there are multiple plugs in the sampling cable of the protection board,they need to be alternately inserted on the two rows of pins in sequence. Package Included: JKBMS Adapter Board * 1