RE: [DML] Re: Car's use of electricty / alternator & battery question

["Joseph Kuchan" <josephkuchan@xxxxxxxxxxx>]

John,

Isolators are there to prevent one battery from forcing current through the 
other. In two battery systems one battery almost always has a slightly 
different voltage output than the other due to differences in charge and 
condition. If two or more batteries were put directly in parallel, the 
stronger of the two would discharge the other by forcing a current through 
it.

It has nothing to do with a cooling down period.

Joe

>Why also do you think isolators are made for duel battery systems.
>Everything needs a cooling down period.
>John Hervey

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