T-Pain Is On A Boat: [Electric Boats] Re: Sitting at my desk -- musing.

Sunday, June 7, 2009

[Electric Boats] Re: Sitting at my desk -- musing.

You could share the drain by alternately conecting from middle and top of the 48v bank and between middle and bottom of the bank .Seems like a lot of inconvenient work though.
Another alternative might be to power a 24 volt charger/battery from the 48v line . The converter for this could presumably be smaller than for a direct connection . The 48/24 convertor for direct connection to appliances needs to be rated to at least the maximum draw of the ( electrically) thirstiest accessory.

There are several other tricks you might consider . its easy enough for example to run pairs of 24 volt lamps in series to convert them to 48 volts. You might also consider using a 48 to line volts converter as many houselhold versions of appliances are more robust and efficient than their low voltage counterparts.

Chris S

--- In electricboats@yahoogroups.com, "dennis wolfe" <dwolfe@...> wrote:
>
> Keith,
>
> This would work fine and would discharge the batteries unequally - not a problem as long as you charge them unequally, too. Separate 12v chargers would do the trick.
>
> A 48 to 12 or 48 to 24 converter would work too and not discharge the batteries unequally but that's more complexity and cost too.
>
> Denny
>
> ----- Original Message -----
> From: aweekdaysailor
> To: electricboats@yahoogroups.com
> Sent: Saturday, June 06, 2009 2:30 PM
> Subject: [Electric Boats] Re: Sitting at my desk -- musing.
>
>
>
>
>
> Someone mentioned earlier "drawing off the middle" - which I think means drawing from the center of a string - so you get 1/2 the total voltage at that point. 24V "appliances" are relatively common and you'd then have good amps available as well as the proper voltage using a 48V string.
>
> Would this work? Does it drain the batteries unequally? This seems a good way to get 24V for "house" including high-amp appliances like winches if so.
>
> -Keith
>
> --- In electricboats@yahoogroups.com, "davethehypnotist" <hypnotist@> wrote:
> >
> >
> > If I am to install all these batteries in the boat, what else can be
> > powered other than propulsion, lights and com/nav? How about a
> > hydraulic/winch system for the swing keel?
> >
> > * A windlass for hauling in my puny anchor rode?
> > * LED floodlights under the water line? (no pun intended)
> > * e-Pod?
> > * A washdown pump?
> >
> > Right now, I'm building battery racks/trays out of pressure treated
> > lumber, enough for eight batteries four to a side, to eventually be
> > epoxy coated and then epoxied into the hull. I think I am way too lazy
> > and the temptation to add gadgets is fun to think about. The boat is a
> > 22' Morgan (1968) and we're "on the hard" now anyway. Any ideas for
> > what to add in my planning stages while the bottom is being worked on?
> > All advice and ideas are accepted!
> >
> > Thanks in advance.
> >
> > Dave, N1EYO/4
> >
> > SV 'Hypnautica', Cocoa, FL.
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
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> [Non-text portions of this message have been removed]
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