On Thu, 2 Oct 2003 JNiolon@uss.com wrote:
>
> I just completed ruining two 12 volt hi crank amp batteries, evidently by
> keeping them charged ???
>
> I had two 1100 cca batteries that I kept on trickle charge as backups for
> my generator and occasional jump start on a car or tractor in the
> neighborhood. The consensus is that just keeping 1-3 amps on the
> batteries doesn't 'exercise' them and the plates will 'sulfate' ??? .. a
> neighbor suggested using a pulse type charger.. my question...
>
> can someone explain what the process is ?? is this just unfiltered dc ??
> or is there a occasional surge voltage that burns off the sulfates ???
>
> I know these units can be bought but can they be home built ?? anyone got
> a schematic ??
>
> please educate the electrically challanged here..
>
> thanks
>
> john
John-
I have no batteries with the capacity you indicate you have here, but for
$50 at the Batteries Plus, I picked up a 12V Pulse conditioner/charger. My
plan is to use it to maintain several 12V gel cells I have (pulled from
complaining UPS units) to power my ham radio station.
See if this helps to explain some of the theory behind pulse
conditioning...
http://www.pulsetech.com/About/techtalkqa/techtalkqa.html
-Peter
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