This is an intelligent protection board specially designed for battery packs. It is suitable for lithium batteries with different chemical properties such as lithium ion and lithium polymer. Protection boards such as lithium iron phosphate have strong loading capacity, and the maximum continuous discharge current can reach 60A. 13-core series protection of lithium battery pack (13x3.6V/3.7V) Multiple charge and discharge protection functions (overcharge, overdischarge, high and low temperature protection, overcurrent protection, short circuit protection, etc.), double protection of software and hardware. Accurate SOC calculation, automatic learning SOC function Battery system automatic charging function or static balance function Equipped with Bluetooth module with isolated UART With SW Port for output control Colour:silver Material:Metal Package Contents: 1 x Battery protection board 1 x Bluetooth module 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.