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Old 03-04-2020, 07:13 AM   #1
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Tiny solar panel

I found a fuse in the fuse box marked solar. So, I went up on the roof and found this tiny little solar panel. I have a couple questions about it.


1. How can I tell if its still working?
2. How much power will it put out?
3. My fridge runs on DC. I wonder if its enough to keep that running while boondocking. Assuming no clouds or shade? I have two 12volt RV marine batteries.
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Old 03-04-2020, 08:01 AM   #2
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Based on the apparent size and distance from the batteries, I doubt that panel will even keep a fully charged battery charged with nothing running.
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Old 03-04-2020, 08:24 AM   #3
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It might be running a little circulation fan somewhere. For the fridge or something like that.
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Old 03-04-2020, 04:35 PM   #4
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If you want to see if it is still working take a volt meter and measure between one side of the "solar" fuse and ground. If you get 12ish volts then it is still producing. This assumes your fuse is labeled correctly. You can also find the wire from the panel and look for a junction to measure at.

As said above, you might be able to trickle charge your battery.
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Old 03-04-2020, 04:50 PM   #5
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You haven't said what kind of rig you have.
People have put those small solar panels on their rigs to keep their battery charged while in storage. You might want to look for a connection on the battery. Have you looked for a make and model number on that pane.
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Old 03-04-2020, 09:09 PM   #6
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Quote:
Originally Posted by Reverse_snowbird View Post
You haven't said what kind of rig you have.

People have put those small solar panels on their rigs to keep their battery charged while in storage. You might want to look for a connection on the battery. Have you looked for a make and model number on that pane.
It's on a 06 cardinal I didn't notice anything on the panel.
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Old 03-05-2020, 12:48 AM   #7
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Originally Posted by jenandjon View Post
It's on a 06 cardinal I didn't notice anything on the panel.
That's obviously an owner added retrofit. So without the information on the solar panel it's going to be hard to determine its capabilities. Unless one of our solar experts on this forum recognizes it and can give you more info.
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Old 03-05-2020, 01:17 AM   #8
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To give you some idea of the wattage, the dimensions of a modern Eco-Worthy 5 watt solar panel is 8" x 10"
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Old 03-05-2020, 07:20 AM   #9
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The ac manafactures were doing that as a factory piece in that era. Its supposed to help keep battery charged in storage with no load.
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Old 03-06-2020, 06:28 AM   #10
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Quote:
Originally Posted by TowPro View Post
The ac manafactures were doing that as a factory piece in that era. Its supposed to help keep battery charged in storage with no load.

Ok makes sense.
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