Enhanced Battery Safety: DALY active balance BMS offers protection against overcharging, overdischarging, overcurrent, short circuits and extreme temperatures, ensuring the safety and longevity of the battery pack. Extra protection features: Pre-charge protection, Wrong connection or missing connection of wires, Parallel connection current limiting, Cell balancing. Battery Management System: Manage your battery easily with Android or iOS mobile app. Bluetooth connectivity allows you to monitor status, adjust settings, and control charge/discharge from your device. Voltage Compatibility: Can work with 4S, 6S, 8S; 12V, 24V battery packs. Which are commonly used in electric vehicles, energy storage systems, backup power supplies and other applications. 3 - year Warranty. Packing List: 250amp Smart BMS * 1, Sampling Cable * 1, P - & B - Cable * 1, B + cable * 1, NTC * 1, Screw * 2, Operation manual * 1. Easy to install. Everything you need for setup and operation. 100BALANCE Smart BMS 250A CAN RS485 1A Active Balance with FAN & Bluetooth Battery Protection Board for LiFePO4 Li-ion LTO Battery Pack