User Panel
User Panel
User Panel
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Posted: 1/30/2021 5:48:22 PM EDT
[#1]
A solar charge controller.
If you want 120 VAC, an inverter. |
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Posted: 2/1/2021 3:09:12 PM EDT
[#2]
Just looking to charge phones and maybe run a 12v fan on warm days.
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Posted: 2/1/2021 5:18:09 PM EDT
[#3]
Quoted: I was given an 18" x 36" solar panel (didn't work, saved it from being tossed) and I would like to use it on one of my hunting shacks. Besides a couple batteries, what will I need? Your post says it didn't work, and that's why it was getting tossed. |
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Posted: 2/1/2021 5:39:56 PM EDT
[#4]
Quote HistoryQuoted: Just looking to charge phones and maybe run a 12v fan on warm days. Then my previous post covers it. |
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Posted: 2/1/2021 11:42:21 PM EDT
[#5]
Does it work properly?
What's the max voltage? What's the max current? |
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Posted: 2/2/2021 1:46:46 PM EDT
[#6]
Quote HistoryQuoted: Your post says it didn't work, and that's why it was getting tossed. |
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Posted: 2/2/2021 1:47:13 PM EDT
[#7]
Quote HistoryQuoted: Then my previous post covers it. |
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Posted: 2/2/2021 1:48:01 PM EDT
[#8]
Quote HistoryQuoted: Does it work properly? What's the max voltage? What's the max current? |
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Posted: 2/3/2021 12:20:09 AM EDT
[#9]
If you have an ammeter function in your multimeter, put the panel output thru the ammeter. That will tell you the current. Fear not, solar panels are current limited by the amount of sunlight hitting them.
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Posted: 2/3/2021 3:55:51 PM EDT
[#10]
Quote HistoryQuoted: If you have an ammeter function in your multimeter, put the panel output thru the ammeter. That will tell you the current. Fear not, solar panels are current limited by the amount of sunlight hitting them. That only tells you what current the panel can drive in that load. Watch out. The lower voltage often has a decent amount of current available. Most meters cannot measure all that much DC current. |
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Posted: 2/3/2021 3:58:27 PM EDT
[#11]
I'll dig it out of the shed tonight and see if any info is on the back.
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Posted: 2/3/2021 3:58:29 PM EDT
[#12]
Probably loads down enough for a 12v system. And labels or data on the panel? Your op is a lot like saying "I have a car and it doesn't work. How do I make it go?"
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Posted: 2/3/2021 3:59:39 PM EDT
[#13]
Quote HistoryQuoted: Probably loads down enough for a 12v system. And labels or data on the panel? Your op is a lot like saying "I have a car and it doesn't work. How do I make it go?" |
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Posted: 2/3/2021 7:39:06 PM EDT
[#14]
Cool. I'll always help a friend of Albert, given enough to go on.
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Posted: 2/3/2021 10:25:53 PM EDT
[#15]
This is the only thing on it.
 Attached File |
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Posted: 2/3/2021 10:27:58 PM EDT
[#16]
Of it's outputting voltage you just need the charge regulator in-between it and the battery
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Posted: 2/4/2021 12:08:32 AM EDT
[#17]
Quote HistoryQuoted: That only tells you what current the panel can drive in that load. Watch out. The lower voltage often has a decent amount of current available. Most meters cannot measure all that much DC current. It gives a good indication of short circuit current output for the panel (output at nearly 0 V). You will never get more current than that. Certainly, you will get less at higher voltages. The other measurement is open circuit voltage - voltage into a voltmeter. You will never get more voltage than that. My cheapie meter is rated for a max of 10 A DC. They usually tell you right on the front panel. If you are worried, turn the panel to face away from the sun, attach the meter, then slowly rotate the panel towards the sunlight. If it starts to go over your meter's max, stop and disconnect. |
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Posted: 2/4/2021 12:44:54 AM EDT
[#18]
Hmmmm.... it mmmmmight be a Harbor Freight Thunderbolt panel. If that's the case, it is designed for a 12v system. That's reinforced by the 20v no load voltage you mentioned, though that's 2v higher than I'd expect. Hook a tail light to it, then read across the light to see where it drops to.
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Posted: 2/4/2021 9:45:43 AM EDT
[#19]
Quote HistoryQuoted: Hmmmm.... it mmmmmight be a Harbor Freight Thunderbolt panel. If that's the case, it is designed for a 12v system. That's reinforced by the 20v no load voltage you mentioned, though that's 2v higher than I'd expect. Hook a tail light to it, then read across the light to see where it drops to. https://www.harborfreight.com/25-watt-solar-panel-63940.html |
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Posted: 2/4/2021 11:44:37 AM EDT
[#20]
Quote HistoryQuoted: Hmmmm.... it mmmmmight be a Harbor Freight Thunderbolt panel. If that's the case, it is designed for a 12v system. That's reinforced by the 20v no load voltage you mentioned, though that's 2v higher than I'd expect. Hook a tail light to it, then read across the light to see where it drops to. The voltage is very sensitive to temperatrure, so a cool panel will have a higher open circuit voltage. Also, it looks to be amorphous silicon not single or poly-crystalline silicon. |
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