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  1. E

    What refund would you ask for?

    None of the mentioned "defects" will affect cell performance. You bought bottom of the barrel and got what you paid for.
  2. E

    copper bars on sale until 7/15

    onlinemetals.com 20% off code ends at midnight on 7/15. If you have one locally you can pick up and not have to pay shipping also here's what I'm using for current carrying capacity https://www.busbar.com/resources/copper-ampacity/
  3. E

    Think You're Clever? MultiPlus-II 12v 2x120

    air conditioner can stay on AC out 1 lol
  4. E

    Ferrules on PV cables or bare strands?

    as you tighten the terminal you want it to crush the ferrule a bit. that way you get more points of contact for current to flow. look at the before and after pictures I posted above. the ferrule looks the same because the terminal on the SCC is anemic
  5. E

    Ferrules on PV cables or bare strands?

    How often are you redoing your connections? Fine stranded wire would be treated the same. You want as much contact area between the terminal and the conductor. A thick ferrule prevents that. If you're worried about a loose strand shorting to another terminal then slow down and stop throwing...
  6. E

    Ferrules on PV cables or bare strands?

    bare strands. most PV controller terminals aren't strong enough to deform a 10awg ferrule for a good connection before and after connection. which one do you think has more surface area to the terminal
  7. E

    Everybody... use safe conditions working...

    shit happens lol. couple months ago I put my pocket knife through my thumb. went out the nail, through the mousepad, and into the table
  8. E

    At what point are you done top balancing?

    Yup. Charging it back up again and going to let it sit and compare self discharge rate
  9. E

    At what point are you done top balancing?

    correct. under one volt
  10. E

    At what point are you done top balancing?

    so random question that I don't want to start a new thread about. I checked the voltage of all the cells right out of the box and one of them was .599 so I talked to the seller and they asked to do a capacity test. All the cells so far have tested 286-289ah and this bad cell tested 289ah. so...
  11. E

    At what point are you done top balancing?

    I had it set to .5amps and it did cut off. So I guess you can go lower. But for testing I want everything consistent so I'll be keeping that setting As far as in use settings I'll just let the victron handle that
  12. E

    At what point are you done top balancing?

    So the guide says to stop charging when the current is close to zero. Well how close? 50ma? 1amp? 5amp? I have 8cell in parallel. That's 2240ah. If we charge at .1c then thats 224amps. Is .01c considered done because that's 22amps. What about .001c? Thats 2amps. I know some power is getting...
  13. E

    A bolt by any other name, is still a bolt

    you want flange bolts or nuts for extra surface area
  14. E

    did some FEA comparisons for cell compression

    the deformation is going to be the same shape but the amount of deformation will change. so compare the scale on the right
  15. E

    did some FEA comparisons for cell compression

    all calculations use a standard 280A size battery with 12psi of pressure. the scale to the right shows deformation in mm with a 1/4" bolt or rod it'll need to be torqued to 8ft/lbs to achieve 12psi assuming that plywood or OSB is stiffer than balsa, then .750 wood is comparable to .250...
  16. E

    Pool Pump Question

    We might have the same pump. So this is what it normally runs at And this is max
  17. E

    Recommend me a multimeter ?

    I went witht he tacklife cm06. it's supposed to be just as good as the flukes https://diysolarforum.com/threads/catl-310ah-grade-a-prismatic-cells-from-basen.17359/page-9#post-254113
  18. E

    CATL 271Ah 'Grade A' prismatic cells from Shenzhen Basen - Cell terminals without threading

    iirc they're limited to 150W and you can enable 180W if you go through the setup menu. but the heatsink might not be able to shed all the heat
  19. E

    Pool Pump Question

    the description says 1.6hp. that's 1200W. so 1500W assuming some inefficiency I have a variable speed pump on my pool and its around 600W at 2000rpm
  20. E

    just noticed that jbd bms software "needs" gps and location access to run?

    New versions of android requires location to be turned on for bluetooth. I think it's because google was unhappy with how many people had it off
  21. E

    Pool Pump Question

    My suntech 285W panels are 44Voc but the mppt runs them at 30V. Also you're going to be drawing around 1500W on that pump so I'd be looking at 2000-3000W worth of panels I would build a normal solar system with panels, batteries, inverter and get a quality pump
  22. E

    550W of panel for $120!

    a pallet to atlanta is 220 to the terminal and 300 to the house with liftgate service. the shipping cost over the phone was better than the online price.
  23. E

    $3142.00 for (32) 280aH 3.2V GRADE A, Fresh Manufactured, DELIVERED by Alithor New Energy CO

    yo if that's true can you find my cells and start capacity testing them ;)
  24. E

    $3142.00 for (32) 280aH 3.2V GRADE A, Fresh Manufactured, DELIVERED by Alithor New Energy CO

    $80 each plus $560 shipping to Atlanta. But they said prices are going up
  25. E

    CATL 271Ah 'Grade A' prismatic cells from Shenzhen Basen - Cell terminals without threading

    I suggest a machine shop over a mechanic shop. some mechanics are utter idiots and shouldn't be trusted with a screwdriver. also a machine shop would have a steady arm and more experience with tapping aluminum
  26. E

    $3142.00 for (32) 280aH 3.2V GRADE A, Fresh Manufactured, DELIVERED by Alithor New Energy CO

    I purchased 32 cells from starmax. they're currently out of stock, but should have more at the end of the month. took 11 days to ship out. now it's about 40 days until I have them
  27. E

    230v for mobile minisplit

    what's considered a "high" SEER minisplit? pioneer makes 21.5 SEER mini splits that are 110v
  28. E

    REPT 280ah damage during shipping, OK to use?

    underneath the terminal is a flexible connection to the pouches. if it tests fine then use it
  29. E

    Bulk battery cable

    Home depot and lowes sell cable by the foot. Also try the local welding supply shop
  30. E

    Six 290w solar panels for a 24v 1700w system using a 100/50 CC?

    the 50A is what the mosfets on the inside can handle. victron is quality so there's enough overhead to run it to the max
  31. E

    550W of panel for $120!

    No idea. I only got the 285s. Will made a video about the 250s and those are also good
  32. E

    Six 290w solar panels for a 24v 1700w system using a 100/50 CC?

    the charge controller has an output limit of 50A. it'll pull as much power as it can from the panels until it reaches its limit. a 1700W setup might only be able to supply 1000-1300W where you are
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