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While attempting to dig up info on a JK B2A8S20P BMS I stumbled on to a line of BMSes that I've never seen discussed on these forums: The "100 BALANCE BMS" series that's made by Dongguan Balanced Management Technology Co. Ltd. While it seems that they don't go beyond 100A units, they give the...

Hello I‘m planning on building a single 4S battery pack with (4) CATL 302Ah cells soon, and have been here gathering info here on all the things needed. One very important component for this battery, which will be installed in my travel trailer, is the battery’s master current disconnect...

So who are the people to talk to at the moment for prismatic LiFePO4 cells? I keep reading of the various Amys or Jennys with no references to an actual website of any kind. Chinese company names are mentioned in various threads but it seems like people can't keep them straight. Even in the...

Today I finally received the (4) cells I ordered from Shenzhen Basen Technology back in November. Some 97 days ago. They all appear to be in great shape physically. No dents, scratches, or bloating, but I have some doubts to the actual manufacturer and the capacity. I was promised Grade A...

Hello, I have a JBD-SP04S028A Smart BMS with (2) offboard temperature sensors. For whatever reason, the manufacturer decided to make the leads for the two sensors about 9" or so long. This makes it very difficult to place the sensors anywhere useful. Can I just extend the sensor wire (cut...

Is anybody aware of a repository with the files necessary for upgrading the firmware of JBD BMS units? I have (2) JBD-SP04S028A-L4S-150A BMSs, both made on November 6, 2021, and list the installed firmware as Beta 2.0. I do have issues with the balancing function not always following the set...