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14 thoughts on “Fixing blown trace fuse on diy pcb battery powerwalls”
  1. Avataaar/Circle Created with python_avatars David Robert Lewis says:

    Jehu are you adding just one 5A SMD fuse per board?

  2. Avataaar/Circle Created with python_avatars Sonnet Gomes says:

    I had a similar issue, and it turned out one of the welds came off. Luckily I dont use a BMS and monitor the battery using a cellLog. Thank you for posing this informative video. A BMS might not alert related to such issues with blown fuse or lose welds. Thank you for posing this useful information. Is it possible to DIY more than 8s Battery Monitors?

  3. Avataaar/Circle Created with python_avatars Maxim Koshelev says:

    just occasionally my eyes holds on this preview… this is exactly my case, one fuse on my board melted down during testing. Easy to fix when know 🙂

  4. Avataaar/Circle Created with python_avatars Dillon McCormick says:

    The fuse blew cause your clueless

  5. Avataaar/Circle Created with python_avatars Dustin Sparks says:

    Would using 1A or 2A poly fuses here help? The short or over-amp condition would be cleared once you take the pack apart from it's brothers, or disconnecting the ribbon cable.

  6. Avataaar/Circle Created with python_avatars Marcin Słowik says:

    The reason you're still seeing readouts for c1 and c2 is not because you have a weak current, but because the wires act like a capacitor. Without going into much detail: you still have a voltage difference between line 0 and line 2 of about 8.3V (2x 4.15V) and then whatever potential is on line 1 (the one with blown fuse) at the side of the reader, the readouts must add to those 8.3V. That's why you have 4.9V and 3.17V on the reader (8.07V total, a bit short of 8.3V but I don't wanna go into detail as to why that may be the case 😉 ).

  7. Avataaar/Circle Created with python_avatars JamRock Robby says:

    If it's not too much problem. You could include a piece of the right gauge fuse wire in the kit just in case

  8. Avataaar/Circle Created with python_avatars John S says:

    Does anyone know when the new PCBs that are already put together will be available?

  9. Avataaar/Circle Created with python_avatars GTW TechWave says:

    Hello,

    I have a question about connecting Li-ion cells.

    Is series or parallel connection the better option?

    I noticed that when connected in series, the middle link is the most exploited and discharged first, which is unfavorable. What does connecting a large number of cells in parallel for e.g. powerwall applications mean?

  10. Avataaar/Circle Created with python_avatars John S says:

    When with the new "No Solder" PCB kits be available?

  11. Avataaar/Circle Created with python_avatars Ennar says:

    Open fusible links are dangerous. Please do not skimp on fuses!

  12. Avataaar/Circle Created with python_avatars Kingalex2nd says:

    can you make a 96v or 192v system like that and if yes where can you get a charge controller and inverter for that voltage?

  13. Avataaar/Circle Created with python_avatars Ali Saeed says:

    Hi witsh one is the good for PCB c1 or c2
    For the powerwall

  14. Avataaar/Circle Created with python_avatars PGpilot says:

    The designer of the original pcb's says these boards are only for testing 18650's.
    Why do you promote and sell these pcb's as actual parts for powerwalls?

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