Low battery crash

Discussion in 'Issues' started by ZenFree, May 20, 2017.

  1. ZenFree

    ZenFree New Member

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    Using Pico with firmware 170517. When battery gets low the Pico restarts itself. One time it was stuck in some error mode continuously firing, then restarted itself. The battery indicator had "!" sign. I tried to increase cutoff volts to 2.95 but it still crashing. Old version displayed low battery error but didn't crash. I suspect that new firmware allows voltage to drop for short period of time bellow minimum required for the board to operate.
     
  2. maelstrom2001

    maelstrom2001 Developer
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    Please provide more detailed info: battery model, discharge curve, profile settings, coil parameters.
    It is "Weak battery" message on small screens.

    Yep, some parameters were tuned by complaints from users who wanted to squeeze out their dead batteries to the last drop :D
     
  3. ZenFree

    ZenFree New Member

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    Samsung 30q, tried using custom and default battery profiles. When it crashed to continuously firing mode the display didn't show any messages and was unresponsive. The only indicator was "!" sign in the middle of battery icon.

    Atomizer: 2 coils Le Mirage, 0.218Ohms, 45W SS temp control, preheat 120% for 1 sec. Pi-Regulator enabled range 70% P Value 1850, I value 300.

    Currently using:

    upload_2017-5-20_14-46-29.png
     
  4. maelstrom2001

    maelstrom2001 Developer
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    Too many conditions, let's try to weed out excess. Disable PI-Regulator, watch and tell if there will be a hang.
     
  5. ZenFree

    ZenFree New Member

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    Ok, PI is disabled. I'll let you know if it still crashes.
     
  6. ZenFree

    ZenFree New Member

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    Still randomly reboots. Sometimes during preheat, sometimes when preheat is off (during timeout). It may reboot on first try, then ok for few, then reboots again. It's not consistent at all.
     
  7. maelstrom2001

    maelstrom2001 Developer
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    Well, tried 30Q (GEN profile) on SS 0,18 Ohms build and your settings, on Pico as well. Battery voltage in standby was about 3,20 volts. Got the same battery warning, output power was decreased to about a half (20+ W), but can not reproduce reboots. There is a suspicion of Check TCR option, 'cause during this check output voltage is not decreased, which can lead to a critical voltage drop. Try to disable Check TCR.
    Also, please tell with what battery voltage (in standby) problems start.
     
  8. ZenFree

    ZenFree New Member

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    Disabled TCR check. It happened again, continuously firing for about 10 seconds then reboots itself. Battery voltage 3.38.
     
  9. ReikoKitsune

    ReikoKitsune Developer
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    In stand by or under load?
     
  10. ZenFree

    ZenFree New Member

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    It freezes when stuck in firing mode. The voltage recorded right after restart.

    Stuck in firing mode again while connected:

    upload_2017-5-21_15-40-45.png
     
    #10 ZenFree, May 21, 2017
    Last edited: May 21, 2017
    nyos8883 likes this.
  11. ZenFree

    ZenFree New Member

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    Don't know if it means anything but sometimes graph shows voltage go up to 5.12V.
    upload_2017-5-21_15-48-33.png
     
  12. inteks

    inteks Member

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    same problem here. freeze ... continue firing ... reboot.

    Gesendet von meinem SM-G935F mit Tapatalk
     
  13. inteks

    inteks Member

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    my istick does it again. a bit annoying....
    i'm new to arctic fox. what is the "old" version you using where this doesnt happend?? the last official ? 170510?
    may be i downgrade my pico until its fixed.


    btw. for me the problem starts when standby voltage drops below 3.5v
    i'm using vtc6 in my pico with gen battery profile . and raising the cutoff voltage to 2.9v doesnt help :(
     
  14. maelstrom2001

    maelstrom2001 Developer
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    Yep, I have the same question. As I still can not to reproduce, there will be very useful to find the build that have no this issue, it will help to understand where was the regression, if it occured. Also, do not forget to apply identical settings to any build you've tested.
     
  15. inteks

    inteks Member

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    with 170510 it happens too :( @3.46V in standby (after reboot)

    witch should i try next ??
     
  16. maelstrom2001

    maelstrom2001 Developer
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  17. inteks

    inteks Member

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    hmmm... my androidtool will not work with this release?
     
  18. maelstrom2001

    maelstrom2001 Developer
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    Yes, it will not work correctly. Okay, what is your current build which works with Android tool and suitable to test?
     
  19. inteks

    inteks Member

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    it does it again .... with the 170201 version :( (@3.6v idle voltage)

    upload_2017-5-30_20-0-7.png
    this is NOT when it crashed. this is a puff after its reboot...
     
  20. maelstrom2001

    maelstrom2001 Developer
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    3,6 V idle voltage and 75 W output, great. Battery voltage under load drops faster than box can measure it and stop fire. Miracles does not happen.
    Why you set power so high? When the temperature stabilized, required power is about a half of presetted, this is clearly visible on the chart.