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  1. EHCanadian

    Determining the copper wire gauge size for the parallel and series connection.

    Question for your 18650 builders. I know spot welding and nickel strips are preferred. But. I am wondering if one should stay with the positive and negative wire gauge size for the output connector. Example. My SLA 12v 20ah years. I always stayed with 8,10 or 12 copper gauge for my terminal...
  2. EHCanadian

    How many 18650 cells can you fit in a 12v 20ah sla form factor

    The answer is 81 18650 cells.
  3. EHCanadian

    How many 18650 cells can you fit in a 12v 20ah sla form factor

    The 12v demention layout is the only option as i would have to tear apart the bike again. Cell level fuses are a option i am considering. Since i would be making these packs. I would definitely be adding the option of mainance leads per pack along with direct charging. I am aware it is not...
  4. EHCanadian

    How many 18650 cells can you fit in a 12v 20ah sla form factor

    Would be all at once as I would build each pack to replace the sla batteries. I was googling and I guess it would be a 3 series and x parallel pack. 72 Cells in total. 3 in series with 24 in parallel. Thou I can't see that being about the same size or smaller. 72 cells x 10 Packs is 720 cells...
  5. EHCanadian

    How many 18650 cells can you fit in a 12v 20ah sla form factor

    ive been trying to figure out how many 18650 cells you can fit in a 12v 20ah SLA dementions. Length: 7.13 inches (181mm) Width: 3 inches (76.2 mm) Height: 6.57 inches (167mm) how many ah could I fit in these dementions assuming i am not including a bms and a base voltage of about 10-15v i...
  6. EHCanadian

    $14.99 72v Sunwin Controller

    Sorry for the delay. I have yet to trip my 50a breaker. Thou I did have 4 controllers 1000w and 1500w fail on emmo bikes. 96v controllers. tried both at 96v stock acid and 108v both had died (resistance in the hub motor) while controller was attached to phase. As soon as I disconnected the...
  7. EHCanadian

    $14.99 72v Sunwin Controller

    I'm pushing 108v though a 96v 1500w controller. Had to have a 108v charger created to charge these (acid) 130v charge 124v float
  8. EHCanadian

    $14.99 72v Sunwin Controller

    Here is the 96v 1000w & 15000w Models 96v 1000w Fet: IRFB4115 3329 2E 31 Caps: 160v 470uF 96v 15000w Fet: IRFB4115 329P JS 21 Caps: 160v 470uF Both have a cause of death. Blue phase tracers to fets obliterated. Exact same area as well. Both where running 108v 20ah acid deep...
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