Quote:
Originally Posted by MetroMPG
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?
The worst stick (the one with the lowest discharge capacity) appears to be #19, at 4879 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.
With the weakest stick at 5500 mAh, that would mean the pack has 85% of its original capacity.
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Have you tried quick discharge to 1v then recharging that one bad cell repeatedly?
I was told a while ago that some of the NiMH can be restored somewhat if discharged quickly (but not too low) then recharged several times.
Also if you build a grid charger you can probably live with the issue at near full capacity, the one cell will be pulled into the low range but as long as you recharge every night it should last quite a while anyway.