[Milsurplus] solar panels

[jcoward5452 at aol.com]

Harbor Freight has a 45 watt panel with a regulator kit that was recently on sale.I bought two but have not set them up yet  I have two 12V deep cycle batts I use to  keep a few things running when the power goes out here during the rainy season and to power green radios of course!
Jay KE6PPF






-----Original Message-----
From: Gene Smar <ersmar at verizon.net>
To: Tony Snider <trsnider at cox.net>; armyradios <armyradios at yahoogroups.com>
Cc: milsurplus <milsurplus at mailman.qth.net>
Sent: Sun, Oct 3, 2010 5:20 am
Subject: Re: [Milsurplus] solar panels


Tony:
     Whatever solar panel you decide on, don't forget to buy a charge 
ontroller to go with it.  Solar panel DC output is very erratic, depending 
n sunshine (a.k.a insolation) and the output voltage can climb to somewhere 
round 140-150% of nominal batt terminal voltage.  E.g., a "12 VDC" solar 
anel could actually produce as much as 17 or so volts in bright sunshine. 
ou'll need to have the controller between the panels and batts to maintain 
he proper charging voltage being fed to your batts.
     The controller will also shunt any excess energy when your batts are 
ully charged (their terminal voltage is at 28-29 VDC) so you don't 
vercharge the batts.  (That's one problem with solar energy - you can't 
fford a large enough battery plant to hold all the energy that can be 
roduced on a really sunny day.  This excess energy only raises the batt 
oltage, possibly damaging the cells.)
73 de
ene Smar  AD3F

----- Original Message ----- 
rom: "Tony Snider" <trsnider at cox.net>
o: <armyradios at yahoogroups.com>
c: <milsurplus at mailman.qth.net>
ent: Sunday, October 03, 2010 1:23 AM
ubject: [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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