4S BMS 12.8V 50A Lifepo4 Battery Management System PCB Protection Board with Balance Wire and NTC,Ten Functional protections, Common Port, for Lifepo4 Battery Pack (4S 12.8V 50A)

Compré dos, el primero funcionó tan bien que me decidí a adquirir otro, lo mismo el segundo, tal como se describe.Los utilicé para dos baterías de 50 amperes, soportan 100 y quizás por esa razón se mantienen fríos en todo momento, los bancos perfectamente equilibrados al mismo voltaje, quizá alguno con diferencias de .03volt, volveré a comprarlos teniendo en cuenta que anteriormente había comprado otras marcas que de nada sirvieron por lobque ahora tengo colecciones de bms inservibles, no gaste tiempo y dinero en otros, sin dudas este es muy bueno.

After reading the instructions and while inspecting the BMS’s noticed 2 screws pinned between the electronic board and the bottom aluminum plate. Had I not inspected the BMS’s before installing it could’ve been catastrophically damaging to my property and physical injuries to me or anyone around during installation. The manufacturer of this BMS product shall exercise/practice a more rigorous Quality Control System. Pictures are provided.

If your looking for a cheap low Amp Bms then this is for you..

I built a 4s3p battery using 6Ah cells and attached this BMS. It worked just fine but while using the battery one day I accidentally shorted the output with about a 1ft piece of 18awg wire. The wire lit up like a Christmas tree and burned the crap out of my hand but the BMS never tripped It took about 15 seconds for the wire to melt through and the short to open again. I checked the cells inside and they had gotten warm but not concerningly so. I guess even with a dead short the wire was thin enough to not present a dangerously high current.The BMS is rated for 100A, which I guess I believe considering what happened. I'm less convinced of it's short circuit protection. Without a data sheet, I can't say for sure if it was operating in spec or not but it doesn't leave me feeling super confident.

This 4S BMS is well-suited for constructing a standard lifepo4 battery typically advertised as a 12V battery, although the voltage is slightly higher than 12V in reality. To utilize this BMS, a minimum of 4 cells is required. While a single 4-cell pack won’t provide the full 100 Amps supported by this BMS, connecting multiple 4-cell packs in parallel would maximize its potential.The BMS is cleanly and reliably built, showing no apparent faults. I appreciate that Bisida took care in shipping the BMS – it was packaged in a sturdy box, bubble-wrapped, and additionally placed in an antistatic bag.While a basic instruction manual is included, it’s advisable to have some prior knowledge, as the manual offers only high-level instructions and may not be sufficient for someone new to battery building.Overall, it appears to be a good value at this price point. I intend to use this BMS for my current project and will update the review in case of any issues.

It was used