Smart BMS 4S 12V 200A Lithium Lifepo4 Battery Management with Balance Leads and Wireless Bluetooth Module - 4 Cells 12.8 Volts DIY Programmable

4 cell, 12v volt Lithium Lifepo4 DIY batteries 200 amp continuous charge or discharge current Low Temperature Charging cutoff Programmable with IOS app, Android app, or Desktop app Includes Bluetooth module for wireless app connections Free USPS Priority shipping It is an intelligent protection board scheme specially designed for 4 series battery packs of start-up battery and electric energy storage products. It is suitable for lithium batteries with different chemical properties, such as lithium ion, lithium polymer, lithium iron phosphate, etc. The protection board has strong load carrying capacity and the maximum continuous discharge current can reach 200A. ● 4 cell series protection ● Various protection functions for charging and discharging ● Discharge over current, short circuit protection functional processes of hardware ● Over voltage, under voltage, temperature and overload protection function processing of software ● Accurate SOC calculation with au