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Posted by mrshyvley on August 16, 2007, 4:52 pm
Please log in for more thread options On Aug 16, 4:43 am, phon...@025379386.for.email.address (Eric Sears)
wrote:
> wrote:
>
>
>
> >Hi,
> > I need a high output alternator, up to 150-200 amp capacity, that
> >will allow me to regulate field current (hence charging current) with
> >my own charge controller.
> >It will be used to charge a bank of deep cycle batteries, plus needs
> >to have enough capacity left over to provide enough current for any
> >reasonable load that my inverter is using during charging.
> >Can anybody recommend some model numbers?
>
> >Possibly even some older ones that I could get at the junkyard and
> >have my auto electric guy rebuild/modify.
>
> >I'm presently using a Delco 65 or 70 amp (don't remember which) this
> >way to charge two series connected 6 volt Trojan L16H deep cycle
> >batteries, plus provide current for light inverter loads during
> >charging.
> >I've been limiting alternator output to 55 amps to not strain the
> >alternator. (it's held up well for 6 years of vacations)
>
> >I now want to increase my battery bank to four Trojan L16H deep cycle
> >batteries, and need a bigger alternator that has capacity to spare.
>
> >Thanks for any input.
>
> Just a few brief comments.
> 1. Presumably your homebuilt charge controller limits the charging to
> about C10 (35 amps or thereabouts I think for L16?)
> If the batteries have done 6 years with an intermittent charging
> regime (vacations) - I guess you must have it about right.
> 2. I wonder whether adding a new bank to an old bank (presumably you
> mean in parallel) is a good idea? Perhaps you will have a isolation
> switch to keep them seperate when not in use. It would be sad to have
> the old set die and take the new set with them!
> 3. If finding such an alternator is difficult, how about 2 x 70amp
> ones, running on a single belt drive (maybe a cogged belt).
>
> Eric Sears
Hi,
Thanks for the reply.
1. The L16H has a higher amp hour rating, and I usually charge
initially at about 45amps.
Also, these aren't the original batteries I started with 6 years ago.
I'm only on the second year for these, and I've done a reasonably good
job of keeping a plug in charger on them during the off season.
2. I see your point, and I had planned on buying 4 new batteries, and
selling these 2 to a friend.
3. I hadn't thought of running 2 alternators in parallel. Are you
saying I can just drive the two fields together, and tie the outputs
together to charge the batteries?
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