[PSUBS-MAILIST] Re: battery pack

["Herve" <caribsub@coqui.net>]

Pat,
4 x 6 = 24 x 6 Volt golf cart batteries, GC15 lead acid with H20
recombination catalytors for free maintenance and no water refills. Being
vented they can be pressure compensated
with oil in battery you still have to refill them with water on a regular
basis.
Someone corrects me if i am wrong......
mostly during recharge and a little bit on load, a battery releases H2 and
02 because of the water decomposition in the acid, oil makes the battery
compressible when diving true but does not prevent the loss of water.
"Sealed" Gel batteries or AGM batteries, are not exactly completly sealed,
and are not compressible either because of void spaces inside, they are
vented out, but not vented in so they would crush under pressure.
I used to pressure compensate my gel batteries before so they would not
crush at depth, but it is too much work to do that.
Herve
----- Original Message -----
From: "Captain Nemo" <vulcania@hawaii.rr.com>
To: <personal_submersibles@psubs.org>
Sent: Wednesday, June 19, 2002 4:43 PM
Subject: Re: [PSUBS-MAILIST] external Motors for depths of 1000ft


> Herve,
>
> What's your battery pack consist of?
>
> Pat
>
> ----- Original Message -----
> From: "Herve" <caribsub@coqui.net>
> To: <personal_submersibles@psubs.org>
> Sent: Wednesday, June 19, 2002 10:04 AM
> Subject: Re: [PSUBS-MAILIST] external Motors for depths of 1000ft
>
>
> > i attache 4 motorguide 107 lbs on my subs, pretty powerfull, i usually
run
> > them at 70 %
> > They are pressure comp, for no deeper than 140 Ft you dont need to fill
> them
> > up with oil.
> > Herve
> > ----- Original Message -----
> > From: "Rob Innes" <innespace@jett.net>
> > To: <personal_submersibles@psubs.org>
> > Sent: Wednesday, June 19, 2002 4:03 PM
> > Subject: Re: [PSUBS-MAILIST] external Motors for depths of 1000ft
> >
> >
> > > Does anyone know how much resistance is caused on the trolling motors
by
> > > filling them with the oil? Approximately how much thrust could expect
> to
> > be
> > > lost on a Motorguide 107lb thrust unit? Has anyone fitted one or more
of
> > these
> > > motors to a sub or DPV?  I'd be very interested in the results
> > >
> > > Rob Innes
> > >
> > >
> > >
> > >
> >
> >
>
>
>