Attention 1 Customer need to identify the battery s series then choose the same series BMS Such as your battery is 24S you must choose 24S BMS can not choose 20 or other one The number ofseries of BMS isfixed not adjustable once the BMS is shipped out 2 All accessories and BMS are the latest version maybe the picture has not been updated if you are concerned about the version please consult the specific situation before purchasing Description BMS 20S 48V 40A 60A 80A 100A 250A 18650 lto Lithium Battery Protection Equalizer Board With balancer Balance Function LTO ModuleFeatures 1 It is suitable for LTO battery pack 2 With functions of protection from voltage current and temperature detection including over current overvoltage under voltage and short circuit protection 3 Suitable for LTO battery According to the customer request we can develop PCM in different sizes and structures 4 BMS manufactured byhigh quality Mos and IC imported from Japan Keep your battery long cycle serivce life time Package Included Choose different BMS specifications according to your needs BMS Board 1 x BMS Board1 x Cable Use to connect battery