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I'd be afraid to go 70MPH in a CCar! I haven't driven mine over about 20MPH yet, and even that has been an experience... Good luck!

While I haven't looked as much into Volt or Tesla modules, and the lowered capacity is likely to be true, Nissan leaf modules should be plenty capable of the required power output. They are certainly capable of at least 3C (which is 180A) power output per module, because that's what the Nissan Leaf pulls from them when generating maximum power. I can't find any solid ratings online besides 180A being safe, but I would be unsurprised if they could handle slightly higher discharge rates (especially with some cooling). 180A in 48V speed mode isn't idea for the CCar based on what I've heard, but as soon as you get 12 packs you have around 6KWH and 720A in 24V speed mode, then 360A in 48V speed mode. I still have trouble believing how many amps these things draw...

Lots of options. Are you documenting your conversions anywhere? I'd love to look at the specs of your battery packs and check your numbers against my estimates.

On Thu, Apr 11, 2019 at 10:59 AM jerry freedomev freedomev@... [C-Car] <C-Car@...> wrote:

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? ? ? ? Hi Jacob and All,

? That isn't wise as the Leaf modules won't handle the power demand at all plus they normally have 20-40% capacity loss when buying them used.

Far better are Tesla or Volt modules.? And I'd go at least 100amphrs.? Volt modules? work great as they don't need? a BMS if set up right.

? ? ? ? I'm setting up a 180 mile range aero subcar trike with Volt modules as they worked so well in my EV trike pickup.? Debating on whether to use a Forklift or my old CCar motor and hope to get 70mph from it.? Though normally would only go 60mph for range.

? ? ? ? ? On lead batteries get a higher amphr rating and good charger and they'll last 5+ yrs.? Make sure all connections are wire brushed bright, tight and coat with Vaseline, etc.

.? Most damage comes at finish charging so unless charging is needed as down 50% or more than 4 days, just don't charge or all the way up.

? ? And equalize 1-2/month.

Until I switch to lithium I found East Penn/Deka normally has the best price for best quality. ? Check local auto parts stores? as 8 batteries is a big sale for them and can bargain 40%+ off the list price.

?? Make sure whomever you buy from they all come from the same batch, pallet, so

?they start off equal.? Check the batch number on each battery to be sure.

Jerry Dycus

On Thursday, April 11, 2019, 05:14:38 PM UTC, Jacob Field jacobtimothyfield@... [C-Car] <C-Car@...> wrote:

Probably not the answer you're looking for, but I plan to upgrade the batteries to li-ion, with used battery modules from a Nissan Leaf. I haven't compared prices (I suspect they're pretty decent compared to lead-acid, though.)

6 of them will make 48V at about 3KWH (60Ah), cost about $450, and take up a lot less space and weight than lead-acid equivalents. You will need a BMS (battery management/balancing system), and you might need a different charger (I read somewhere that lead-acid chargers are bad for Li-ion cells--but haven't confirmed it yet. Based on my estimates, you could probably get around 15 miles of range with 6 modules, 30 with 12, and 45 with 18, which would be as many as fit easily in the 80's ComutaCar's bumper boxes. Not sure about space in the CitiCars, but you can definitely fit 6, and probably 12. The modules should be more than capable of pushing out as many amps as the CCar needs.

If you're willing to take on a small project, I think these modules are a great way to go--and should last longer than Lead-acid batteries. But lead-acid batteries are certainly easier.

- Jacob Field

1980 Gold ComutaCar

@explosive_golfcart (instagram)

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On Thu, Apr 11, 2019 at 9:17 AM koaly@... [C-Car] <C-Car@...> wrote:

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I got my batteries at "SAM'S CLUB". The cheapest batteries around.

Bob