1.This protection board is 3s 4s 5s in common use lithium-ion battery protection board (you can adjust for how many strings to be used), the default delivery is 5S ternary lithium. 2.Specified chip, stable performance, support disconnection protection, over-current protection, over discharge protection, overcharge protection, with balance, etc. 3.Common use for “same port” and “different port”, the protection board uses 15 high-power of ultra-low resistance MOS tube (discharge of 8, charging of 7), in the same port mode can support the discharge current 60A, charging current 60A; different port mode discharge current 80A, charging current 60A. 4.Can use for LiFePo battery,battery packs etc.