4s 8s 12s 16s 100a Lifepo4 Non-Smart BMS 12/24/36/48v

These BMS units are affordable and reliable. They don't have communications built in but they function to protect your batteries from over/under charge, over current, temperature, and has passive balancing.

Balance leads are included. Of course the first small black wire goes to the packs main negative along with with the main B- wire. Then cell #1 positive gets the next white lead wire, cell #2 get the next white lead wire, etc. Until you get to the last cell positive which would be the pack's main positive and that will get the last balance lead wire which is red. B- always goes to battery negative and C- becomes your new main negative which you will use as your negative for charge and discharge. A BMS is sort of like a smart in-line fuse on the negative connection to your battery. When the BMS detects an issue it cuts off the circuit from C- to B-.

If you want a BMS that communicates with bluetooth we have them as well but these work and are the least expensive option to protect your batteries without paying all the extra communication which is not required in many installs.