[Rhodes22-list] Solar Cell Replacement/Charger
Lowe, Rob
rlowe at vt.edu
Mon Jul 23 15:18:50 EDT 2012
And these things are not very big. Probably a quarter inch in diameter by a half inch (for the body itself) at this power rating. Might even be covered with electrical tape and not be visible. - rob
-----Original Message-----
From: rhodes22-list-bounces at rhodes22.org [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of R22RumRunner at aol.com
Sent: Monday, July 23, 2012 2:26 PM
To: rhodes22-list at rhodes22.org
Subject: Re: [Rhodes22-list] Solar Cell Replacement/Charger
_http://www.google.com/search?q=diode&hl=en&prmd=imvnsr&tbm=isch&tbo=u&sourc
e=univ&sa=X&ei=CpcNUO7GCdK7hAeQsoHoCQ&sqi=2&ved=0CG8QsAQ&biw=1175&bih=740_
(http://www.google.com/search?q=diode&hl=en&prmd=imvnsr&tbm=isch&tbo=u&source
=univ&sa=X&ei=CpcNUO7GCdK7hAeQsoHoCQ&sqi=2&ved=0CG8QsAQ&biw=1175&bih=740)
In a message dated 7/23/2012 2:20:18 P.M. Eastern Daylight Time, blue66corvette at hotmail.com writes:
Rummy
What does the diode look like?
Chas
> From: R22RumRunner at aol.com
> Date: Mon, 23 Jul 2012 13:54:57 -0400
> To: rhodes22-list at rhodes22.org
> Subject: Re: [Rhodes22-list] Solar Cell Replacement/Charger
>
> Charles,
> If the solar panels are factory installed, they did not come with the
> charge controller, but probably have a diode somewhere along the line
> to prevent the batteries from discharging. Diodes have zero
> resistance to
electrical
> passage in one direction, but high resistance in the opposite. Solar
> panels generate electricity when it's sunny out, but they can also
discharge the
> battery during times of cloudiness or darkness, hence the need for a
diode
> or controller. My boat came with one solar panel and the diode was
> installed next to the water tank under the v-berth mounted against
> the
flotation
> wall.
> If I were still using a solar panel I would install the charge
controller
> to prevent over charging which can easily destroy a battery(s).
>
> Rummy
>
>
> In a message dated 7/23/2012 10:31:19 A.M. Eastern Daylight Time,
> rlowe at vt.edu writes:
>
> Charles,
> Not all solar panels and batteries will have charger controllers. I
> forgot what the rule of thumb is (I'll look later) but it the wattage
> of
the
> panel does not exceed XX of the battery amperage, no controller is
needed. So
> don't assume you have one. All the Rhodes boats that I can recall
> having one was either added by the owner or was related to shore
> power. The
wires
> from the panels likely run to your battery located mid boat. Your laz
> battery likely just goes to your motor, I assume you have electric
start? - rob
>
> -----Original Message-----
> From: rhodes22-list-bounces at rhodes22.org
> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Charles
> Nieman
> Sent: Friday, July 20, 2012 11:23 AM
> To: Rhodes List
> Subject: Re: [Rhodes22-list] Solar Cell Replacement/Charger
>
>
> AlLast year you posted that you were going to replace your solar panels.
I
> have a 98 Rhodes and it seems it is time to replace my solar panels.
There
> was discussion about a controller to prevent overcharging the batteries.
I
> cannot find where Stan installed a controller nor can I find the wire
> coming from the panels to the batteries.
>
> I was wondering what you found when you replaced your panels and how
> you went about rerunning the wiring. Did you use the old wire to pull
> the
new
> wire or did you splice the new wire to the existing wire near the panel.
> Where did you mount the charge controller (I'm guessing that you
purchased and
> installed one)
>
> Thanks in advance for the help.
>
> Charles
> 98R22
> s/v Daydream
>
>
> > From: al_shell at tampabay.rr.com
> > To: rhodes22-list at rhodes22.org
> > Date: Wed, 2 Nov 2011 22:09:10 -0400
> > Subject: Re: [Rhodes22-list] Solar Cell Replacement/Charger
> >
> > Bob,
> > Great to hear. Thirty bucks not spent on a second charge controller
> > stays in the pocket. Well, until the next item on the project list!
> > Thanks,
> > Al
> > Mishka 01
> >
> > On Wed, 2011-11-02 at 19:41 -0400, Bob Keller wrote:
> > > Al,
> > > I have one for both. Have not had a problem since Rummy & I
installed
> it probably 8 years ago.
> > > BK
> > >
> > >
> > > > From: al_shell at tampabay.rr.com
> > > > To: rhodes22-list at rhodes22.org
> > > > Date: Mon, 31 Oct 2011 22:02:11 -0400
> > > > Subject: Re: [Rhodes22-list] Solar Cell Replacement/Charger
> > > >
> > > > Thanks all for the great info. I'll check the panels this
> > > > weekend
for
> > > > the output voltage with a multimeter. I saw a charge controller
> > > at
> West
> > > > Marine that fits the description of the one below. Can one
> > > > charge controller handle both GB solar panels (parallel ?) to
> > > > both
> batteries or
> > > > do I need one charge controller per panel per battery? Either
> > > > way,
> $60
> > > > is not a bad deal to keep the batteries charged properly.
> > > >
> > > > Thanks again for the great advice.
> > > > Al
> > > > Mishka 01
> > > >
> > > > On Mon, 2011-10-31 at 15:41 -0400, Rick wrote:
> > > > > I second the need for a charge controller. I found even a 3
> > > > > watt
> charge at
> > > > > the high voltage produced by the solar panel mid summer kills
the
> battery.
> > > > >
> > > > > Just be sure when hooking the battery to the solar panel
> > > > > circuit
> that no
> > > > > charge is coming off the panel. A seat cushion covering the
panel
> assures
> > > > > the controller correctly calibrates when hooked up to the
battery.
> > > > >
> > > > > Rick
> > > > >
> > > > > On Mon, Oct 31, 2011 at 10:34 AM, <R22RumRunner at aol.com> wrote:
> > > > >
> > > > > > Al,
> > > > > > You definitely need a charge controller. I helped Capt.
> > > > > > Keller
> install one
> > > > > > on his Rhodes. Prior to that he was going through
> > batteries
on a
> regular
> > > > > > basis. Now with the controller they don't over charge or
> discharge when
> > > > > > it's
> > > > > > cloudy. The cheapest one is around thirty bucks and will
handle
> panels up
> > > > > > to 100 watts, or 7 amps.
> > > > > > I would test the current solar cells to see if they are
> > > > > still
> functioning.
> > > > > > Newer cells might be more efficient if yours are really old.
> Size and
> > > > > > output are all that matters. I'm sure Stan would be willing
> > > > to
> help you
> > > > > > out, but
> > > > > > there are other outlets. Solar panels for marine
> > > installations
> have
> > > > > > connections that are built to withstand the marine environment.
> > > > > >
> > > > > > Rummy
> > > > > >
> > > > > >
> > > > > > In a message dated 10/29/2011 9:32:40 P.M. Eastern Daylight
> Time,
> > > > > > al_shell at tampabay.rr.com writes:
> > > > > >
> > > > > > Hello All,
> > > > > >
> > > > > > Mishka, our 2001 Rhodes, has been on her trailer far too long.
> > > > > > Fortunately, I have had the Rhodes list to keep me engaged!
> > > > > > I
am
> now
> > > > > > working on her project list and have a target date of late
> summer next
> > > > > > year to be sailing again.
> > > > > >
> > > > > > I have many questions but power and wiring are first on the
> list.
> > > > > >
> > > > > > The solar panels have been in the weather since we bought
> > > > > > her
> from Stan
> > > > > > and likely need to be replaced. I wonder if anyone can tell
> > > me
> what
> > > > > > make/wattage the solar panels are that Stan provides as
original
> > > > > > equipment. And where they can be had. Does GB sell them? Cost?
> Maybe
> > > > > > they don't need to be replaced?
> > > > > >
> > > > > > Also, has anyone had experience with any solar cell
> charger/controllers
> > > > > > on the market. I understand that they keep a battery better
> charged for
> > > > > > longer life.
> > > > > >
> > > > > > Thanks in advance,
> > > > > >
> > > > > > Al
> > > > > > s/v Mishka 01
> > > > > >
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