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  1. larryjamescobb@gmail.com

    Proper Battery Build w/BMS

    I just finished my second Battery build. It is a 13S 3P combo using 4500mah 21700 Lishen cells. That gives voltage of 54.6 & amp-hrs of 13.5 for a capacity of 737 watt-hours. I am posting a couple of pictures of the silicone wiring {except BMS sensing}. There is a UL flame-resistant thin plastic...
  2. larryjamescobb@gmail.com

    "Copper/nickel sandwich" buses for series connections

    I'm using 2% Lanthanated Tungsten Electrodes, since they were recommended for copper spot welding. I have finished my 13S 3P 21700 battery pack
  3. larryjamescobb@gmail.com

    "Copper/nickel sandwich" buses for series connections

    I also am trying Tungston w. Lanth. electrodes. I bought 1mm diameter, but I think they limit the current. What diameter electrodes are you using ?
  4. larryjamescobb@gmail.com

    Battery switch position ? positiv/negativ, before/behind bms

    A good BMS or controller should limit the current quicker than a fuse. Here is my 40A BMS integral with my 13S 3P 21700 battery:
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