Thread: WTB / For Sale
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Old 09-20-2019, 10:23 AM   #7 (permalink)
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Join Date: Dec 2011
Location: Vermont
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Gaptooth (retired) - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 54.26 mpg (US)

Such Fit - '07 Honda Fit Sport
90 day: 41.27 mpg (US)

Connect - '15 Ford Transit Connect XL
90 day: 20.13 mpg (US)

K-sight - '00 Honda K-sight
90 day: 38.58 mpg (US)
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I made a cap bank with similar (slightly larger) sized capacitors. You get the effective farads of caps in a series by dividing by the number of caps in series, so 6x 3.0v 350F caps =effectively 1x 16v 58F capacitor.

This cap bank *will* start a small car engine, but you get basically one shot at it, it's a little slow (starts like a weak 12v battery), and if the car sits more than maybe 16-24 hours the self drain in the caps will prevent the car from starting.

I'd say that cap bank is most appropriate for pairing with a small battery, which would keep the caps charged and contribute to the cranking amps. A 20ah LiFePO4 battery with the cap bank would be a nice combination.
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