









π Stay charged, stay connected β the smart BMS your battery deserves!
This LiFePO4 4S 12V 40A Battery Management System (BMS) offers robust protection and smart monitoring for lithium iron phosphate cells. Featuring Bluetooth connectivity for real-time battery data via a dedicated app, it supports multiple communication protocols and ensures safety with comprehensive protections including waterproofing. Certified and backed by a 24-month warranty, itβs engineered for reliable, long-lasting battery performance.








D**D
Great BMS
Ordered a bunch of these to make custom 12v batteries from 18650 cells. They work so much better than the cheap $10 BMS you find here and I am actually confident they will prolong the life of the batteries I worked hard on. I will order more if I have the need.Very sturdy construction and just feel like they are high quality when you hold them. Very good Instructions included!
Trustpilot
1 month ago
3 days ago