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Bug: incorrect battery warning FW C2E_12231

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  • Bug: incorrect battery warning FW C2E_12231

    Mecha C2 E2 E1 unswapped. Just updated and enabled the battery curve for '2500 MaH'.
    Now get continuous low batter warning and web UI shows battery at 0%. Batteries are actually fully charged and voltage is 16.5.
    Can I disable the warning pending a f/w fix?

  • #2
    I'll look into, press [-] at warning, you might get two warnings, if so, press [-] again.
    1. Mecha it possible.
    2. Mecha it easy.
    3. Mecha team up.

    4. ..

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    • #3
      After pressing [-] the warning stopped and oled shows 10.87 volts. I don't have an adapter to check working voltage, but this seems too low. Moved batteries to other C2 and it shows 16.5V. So I guess the first one may have a hardware issue.
      After update f/w on 2nd unit it shows 96% battery.
      So can I configure battery check permanently off on the new f/w?
      Last edited by tksharpless; May 2, 2021, 05:14 PM.

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      • #4
        It looks like the voltage meter for Rev1 C2 is used in Rev0. It will under estimate voltage by 0.6565.
        Rev1 C2 is adjusted to give better accuracy for 4-cell Li-ion batteries.
        You can clear the voltage values in config first. It will be fixed soon. Make sure the firmware states C2E_02231, not C2E_12231.
        There are only a few Rev0 C2 in the world, maybe I should replace it with Rev1 and trash Rev0.

        Nick
        Fanotec
        We listen. We try harder.

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        • #5
          The voltage meter are different for Rev 0 and Rev 1, however I'll check again and do a re calibration of both, if needed.
          I'll post my findings.
          1. Mecha it possible.
          2. Mecha it easy.
          3. Mecha team up.

          4. ..

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          • #6
            Originally posted by tksharpless View Post
            So can I configure battery check permanently off on the new f/w?
            Set Batt min on empty or 0 in /config, it will stop all warnings and show voltage instead

            1. Mecha it possible.
            2. Mecha it easy.
            3. Mecha team up.

            4. ..

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            • #7
              It is confirmed, battery meter of Rev 0 is not calibrated properly, will be a fix ASAP, 1 hour

              Rev 1 is Ok
              1. Mecha it possible.
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              3. Mecha team up.

              4. ..

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              • #8
                Actually something else might happened, please send the MAC of the problematic unit, it is at the bottom of the /config page
                1. Mecha it possible.
                2. Mecha it easy.
                3. Mecha team up.

                4. ..

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                • #9
                  C2 Rev.0's battery meter was re calibrated, in FW (1)2232

                  before update please send the MAC address of the problematic unit to mecha(at)nodalninja com,
                  I need to check if the unit is running the correct FW first, I have one report that one unit has received Rev.1 FW update instead of Rev.0 that will explain why the battery meter was off, if is the case,

                  Regardless, and for safety, that particular unit will be forced on server to Rev 0. FW at the next update.
                  1. Mecha it possible.
                  2. Mecha it easy.
                  3. Mecha team up.

                  4. ..

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                  • #10
                    The MAC address is BC-DD-C2-46-00-5B

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                    • #11
                      Thank you, you can try to update that unit, indeed has updated to Rev 1 FW, it should update to Rev 0.

                      BTW, Personally I like Rev 0 as it allows me to power it from 5 V to 25 V, that includes some solar panels and 24 V car battery.
                      1. Mecha it possible.
                      2. Mecha it easy.
                      3. Mecha team up.

                      4. ..

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                      • #12
                        That unit should be back on normal now, running Rev. 0 FW.
                        1. Mecha it possible.
                        2. Mecha it easy.
                        3. Mecha team up.

                        4. ..

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                        • #13
                          OK, on F/W 02232, battery indication looks right. Thanks again.

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