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redpoint5 · 10-18-2018, 12:34 PM

I'd go with 6x Maxwell BCAP0350 (350 farad). It's just big enough to start a car on its own. Any bigger probably isn't necessary.

This site supposedly has them for $14 each plus shipping, but you have to ask for a quote:

BCAP0350E270T11 Maxwell Technologies Ultracapacitor- Richardson RFPD

This site also has 'em for $14:
https://www.verical.com/quote-cart

Mouser has them for $17 each:
https://www.mouser.com/ProductDetail...20Technologies

They come in 2 flavors: solder post, or weld, meaning you have to spot weld the connections.

Ebay might be the best place to shop:

Balance board (although balancing is not necessary)
https://www.ebay.com/itm/Six-In-Series-MaxWell-350F-2-7V-T11-T10-Supercapacitor-Balance-Protection-Board/263928360582?epid=1950825530&hash=item3d735b2e86:g :g-sAAOSwqrZa1pLZ:rk:25

f:0

EDIT: Just found these 400 farad Eaton for $12:

https://www.mouser.com/ProductDetail/Bussmann-Eaton/XV3560-2R7407-R?qs=sGAEpiMZZMuDCPMZUZ%252bYl72C5N2%252bSzT2g2g0v E9ei8Y%3d

Also found this 400 farad for $12 and it has radial leads to solder to. New item it seems:

https://www.mouser.com/ProductDetail...yX1%2fDaf4o%3d

I use octopart.com to keep an eye on electronic prices at various retailers.

10-18-2018, 12:34 PM	#51 (permalink)
redpoint5 Human Environmentalist Join Date: Aug 2010 Location: Oregon Posts: 12,742 Acura TSX - '06 Acura TSX 90 day: 24.19 mpg (US) Lafawnda - CBR600 - '01 Honda CBR600 F4i 90 day: 47.32 mpg (US) Big Yeller - Dodge/Cummins - '98 Dodge Ram 2500 base 90 day: 21.82 mpg (US) Chevy ZR-2 - '03 Chevrolet S10 ZR2 90 day: 17.14 mpg (US) Model Y - '24 Tesla Y LR AWD Pacifica Hybrid - '21 Chrysler Pacifica Hybrid 90 day: 85.85 mpg (US) Thanks: 4,316 Thanked 4,469 Times in 3,434 Posts	I'd go with 6x Maxwell BCAP0350 (350 farad). It's just big enough to start a car on its own. Any bigger probably isn't necessary. This site supposedly has them for $14 each plus shipping, but you have to ask for a quote: BCAP0350E270T11 Maxwell Technologies Ultracapacitor- Richardson RFPD This site also has 'em for $14: https://www.verical.com/quote-cart Mouser has them for $17 each: https://www.mouser.com/ProductDetail...20Technologies They come in 2 flavors: solder post, or weld, meaning you have to spot weld the connections. Ebay might be the best place to shop: Balance board (although balancing is not necessary) https://www.ebay.com/itm/Six-In-Series-MaxWell-350F-2-7V-T11-T10-Supercapacitor-Balance-Protection-Board/263928360582?epid=1950825530&hash=item3d735b2e86:g :g-sAAOSwqrZa1pLZ:rk:25f:0 EDIT: Just found these 400 farad Eaton for $12: https://www.mouser.com/ProductDetail/Bussmann-Eaton/XV3560-2R7407-R?qs=sGAEpiMZZMuDCPMZUZ%252bYl72C5N2%252bSzT2g2g0v E9ei8Y%3d Also found this 400 farad for $12 and it has radial leads to solder to. New item it seems: https://www.mouser.com/ProductDetail...yX1%2fDaf4o%3d I use octopart.com to keep an eye on electronic prices at various retailers. __________________ Gas and Electric Vehicle Cost of Ownership Calculator Give me absolute safety, or give me death! Last edited by redpoint5; 10-18-2018 at 12:49 PM..