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    Open source BMS for 48V to 400V lithium-ion battery pack

    I tried a very simple test to narrow down the problem. I used the BMS tool to load two different configurations with only 1 single difference, the button configuration. Test 1 this was set to Toggle. With everything idle and switch in off position I connect the charger. Display comes on and...
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    Open source BMS for 48V to 400V lithium-ion battery pack

    I It certainly seems to go into charging mode. The load contactor disengages,the charge relay engages, and the screen displays the charging icon. My Pack voltage factor:3.557 My Load voltage factor:48.869
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    Open source BMS for 48V to 400V lithium-ion battery pack

    If the key is left ON, it will charge. It''s set to charge 18 cells to 4.15v per cell. It always shows error right around 4.0v per cell. It only displays error so no idea what the actual error is. It would be super nice if the actual type of error would show up in the debug console. Thanks...
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    Open source BMS for 48V to 400V lithium-ion battery pack

    With the key off and the charger is connected, it shuts down almost instantly before even trying to charge. The "Charge"" relay is never engaged and the screen only displays "Bye". I am using the LV version. My compiled file is 128k and it times out when trying to load around 75%. I changed...
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    Open source BMS for 48V to 400V lithium-ion battery pack

    Exactly. I want to use the toggle setting due to wiring through a key switch. In this case though, with the switch off, when I connect the charger, the bms comes on briefly, but in under a second it shows "Bye" without ever engaging the charger relay. If I leave the switch on, charging works...
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    Open source BMS for 48V to 400V lithium-ion battery pack

    The economizer is base on the DRV103H. Its a $5 chip but very simple circuit. I seems to work really well. This wasn't really a brilliant idea by me. I fried the economizer board built in to the contactor. So, I decided to make my own and it worked. If you would like the schematic, I can...
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    Open source BMS for 48V to 400V lithium-ion battery pack

    I have been trying for the last couple of days to use ST32cubeide and also Eclipse to make two small changes to the firmware. I know the code I need to add and where to add it but am very unfamiliar with these two ide's. Is there an ide that would be more suitable for making these changes? I...
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    Open source BMS for 48V to 400V lithium-ion battery pack

    The problem was that I had the USB cable connected. The regulator remains enabled as long as the cable is attached.
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    Open source BMS for 48V to 400V lithium-ion battery pack

    Normally Open switch connects "PushButton" to GND. Using Termainal and status command, the detects the button press, just does not power back on.
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    Open source BMS for 48V to 400V lithium-ion battery pack

    Just wanted to see if anyone else has had this problem. i have been bench testing my circuit board design. My momentary Power Button will power off the BMS if held down, but it will not power it back on no matter what I try. What am i missing? Thanks for any suggestions.
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    Open source BMS for 48V to 400V lithium-ion battery pack

    I'm a little confused by the new LV design. Is the '+' side of the charger and load connected to "Load +" terminal? If so, is the contactor coil connected to "Charge" or "Discharge"? I have read through every post several times and am very interested in building this system for my 72v golf...
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