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Old 12-20-2009, 07:19 PM   #7 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.56 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 64.03 mpg (US)
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That would be the key: making some kind of test rig so you could rate/group your cells by capacity.

It's the same issue anyone runs up against if they're using used batteries in a conversion, like the ForkenSwift. Used is fine, as long as your weakest battery meets your range target. But if you're getting the dregs in terms of old batteries, it's nice to be able to test before you go to the trouble of putting it in the car.

FYI, here's one DIY way to capacity test old 12v batteries that conceptually could be applied to lithium cells: Easy Test of Battery Amp-Hours Capacity
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Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: Oops, I did it again! Bought another cheap, 3-cylinder Mirage. Mods in progress...
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
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