I bought 3 extra BesTech 15A BMSs awhile back and I’m selling the extras. I work from home so I can have them shipped the same day you make the purchase. The cost is $45 shipped anywhere in the US so I’m not making much profit at all after the cost of shipping from China, I just want to get rid of them since I’m not using them. Just message me to buy one.
Data sheet can be found at the following link. Let me know if you need help figuring out how to wire it up.