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Old 01-16-2012, 02:58 PM   #63 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
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Home stretch

I can see light at the end of the tunnel. The last stick is cycling, should be done early this evening. I'm still collecting self-discharge data, and will also do the internal resistance test IamIan recommended.

So... how bad is the pack?

You can see the results in the google spreadsheet.




The worst stick (the one with the lowest "restored" discharge capacity) appears to be #19, at 4879 mAh.

Since the capacity of the pack is limited by its weakest stick, that puts the pack at 75% of original, nominal capacity of 6500 mAh.

That really doesn't seem too horrible. Out of curiousity, I'm tempted to put it back in the car just to see how it behaves, while properly balanced.

If I replace all the sticks with sub-5500 mAh discharge capacity, as has been recommended, that would mean 6 or 7 (depending on how this last one turns out) sticks to replace.

With the weakest stick at 5500 mAh, that would mean the pack has 85% of its original capacity.
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Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



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IamIan (01-16-2012)