Hi Mark,
Yes, you would have one bank at 200 ah. But, be very careful doing that. Make sure both banks are at the same state of charge before turning on both switches. If one bank is fully charged and the other is discharged, a huge amount of current will flow from the charged bank to the other. There is nothing to control how much current flows other than the internal resistance of the batteries and wiring. That is not a good situation. I think most people here would recommend keeping your setup as two separate 100 ah banks. In fact, I can't think of any good reason to combine them. You might want to Google batteries in parallel for more information.
Pat
--- In electricboats@yahoogroups.com, "acsarfkram" <acsarfkram@...> wrote:
>
> My EP system has two separate 48 volt, 100ah battery banks with a common negative. If I switched both on at the same time would I get one bank at 200ah? There is a diagram here; http://groups.yahoo.com/group/electricboats/photos/album/237790029/pic/72846009/view?picmode=large&mode=tn&order=ordinal&start=1&dir=asc
>
> I've always figured I would fry something if I turned both on but someone mentioned that it would just act as one 48 volt bank with both switches on.
>
> Thanks,
>
> Mark
> Santa Cruz
>
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