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Re: (ET) Battery bad lot? Open ?



If Open inter cell connector, would not a voltmeter show ZERO volts ?
NO current could flow, if there was an open connection between adjacent cells.

If one cell was shorted, but the others semi OK, you would see the sum - approx 2 volts per cell, of the good cells - or approx 4 volts, as was reported initially.

A load tester is always interesting also - just to see if the other two cells drop quickly ... but, with one dead cell, who cares ... as other post said ... time to recycle the battery !

John

----- Original Message ----- From: "RJ Kanary" <rjkanary nauticom net>
To: "tbamc" <tbamc gbta net>
Cc: <elec-trak cosmos phy tufts edu>
Sent: Wednesday, April 22, 2009 3:55 PM
Subject: Re: (ET) Bad luck? bad lot? bad owner?


Sounds like a mechanical issue.Fractured plate hanger(s), or an open inter cell connector.In that case, the cell would be "open" instead of shorted. A shorted cell would result in the violent overcharging of it's neighbors.At this point the result is the same......another battery for the recycler's pile. :(

RJ


RJ

tbamc wrote:
<With it going from 6.25 to 4.1 makes me think bad cell. >

My first thought also, but cell s.g. same in all three. Not the case if just one cell shorted?

Thon


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