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Ev Archive for October 1999
1670 messages, last added Wed Aug 08 18:46:36 2001

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Re: PbA battery question/investigation



From:           	Jim Coate <jim@coate.org>

> during the charge cycle (Lester) near the end the pack is at 150V,
> with most batteries at 7.4 to 7.6V and a couple dragging nearing to 7.1V,
> but the suspect battery at 6.6V. 

Have you tested them with a hydrometer?  If so, how does the SG of the 
suspect compare with the others'?  Does it by chance have one cell that's 
considerably lower than the others?

If you put a voltmeter on that battery and drive the truck, I suspect 
you'll  see it drop below the others under load, and hit bottom sooner.  
You might actually get more range with that battery out of the pack.


David Roden - Akron, Ohio, USA
1991 Solectria Force 144vac
1991 Ford Escort Green/EV 128vdc
1979 General Engines ElectroPed 24vdc
1974 Honda Civic EV 96vdc
1970 GE Elec-trak 36 vdc