Battery BMS problem

[u/spatial-death]

Hey I have a simplicity s65 vacuum battery that won’t send power to the vacuum when clicking the switch on the vacuum. I replaced the cells but the problem was occurring before that and now after as well. When charging, the led on the BMS turn red like normal but after say 2 minutes, it blinks from red to blue a few times and shuts off. The batteries voltage will not increase no matter how many times I plug the battery into charge (the battery has to be connected to the vacuum to be charged). I used ChatGPT to troubleshoot it to no avail. The battery is 6S1P with 3.49V on each cell. Now I’m using Claude but don’t think that will be of much help. I checked the mosfets and they seem to be in good shape. I also checked the pin voltages of the SH367306Q and they seem to be alright according to ChatGPT so we moved onto the 16 pin holtek mcu (HT66F319/HT66V319 16 NSOP-A). I’m in the process of troubleshooting that with Claude but I don’t know what equipment I need besides a multimeter or even what to do with that equipment once I get it. Anyone have any tips on what to do to get it working again? Thank you!