[Milsurplus] solar panels

[J. Forster]

There are purpose-made solar cell/battery chargers the MV guys like.
Apparently, MVs drain their batteries badly if just sitting. I can't quite
remember the name...  Solargizer, maybe. They were liked because they
charge the batteries with pulses to minimize sulphating.

FWIW,

-John

============



> Tony:
>
>      Whatever solar panel you decide on, don't forget to buy a charge
> controller to go with it.  Solar panel DC output is very erratic,
> depending
> on sunshine (a.k.a insolation) and the output voltage can climb to
> somewhere
> around 140-150% of nominal batt terminal voltage.  E.g., a "12 VDC" solar
> panel could actually produce as much as 17 or so volts in bright sunshine.
> You'll need to have the controller between the panels and batts to
> maintain
> the proper charging voltage being fed to your batts.
>
>      The controller will also shunt any excess energy when your batts are
> fully charged (their terminal voltage is at 28-29 VDC) so you don't
> overcharge the batts.  (That's one problem with solar energy - you can't
> afford a large enough battery plant to hold all the energy that can be
> produced on a really sunny day.  This excess energy only raises the batt
> voltage, possibly damaging the cells.)
>
> 73 de
> Gene Smar  AD3F
>
>
>
> ----- Original Message -----
> From: "Tony Snider" <trsnider at cox.net>
> To: <armyradios at yahoogroups.com>
> Cc: <milsurplus at mailman.qth.net>
> Sent: Sunday, October 03, 2010 1:23 AM
> Subject: [Milsurplus] solar panels
>
>
>> Hello,
>> I have a S-280 comm shelter I have mounted green radios in and I want
>> use
>> a solar charger, does anyone have any panels for sale or a good source??
>> I
>> am looking for 24VDC to charge lead acid batteries?
>> new to solar systems so any help appreciated on battery types,
>> regulators,
>> and panels
>>
>> THANKS MUCH
>> Tony
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