Need some Opinions on 120vAC to 12vDC Power Supply - Page 2 - Fiberglass RV


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Old 03-08-2013, 05:38 PM   #15
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Thanks Tom and Drew. I already replaced the original 2 12v lights with new 12v LED lights. I love them. I guess I'll give it a little time and see how efficient the solar panel is. If the battery needs supplemental charging, I'll add the converter. I have a small plug in inverter, and after a couple of camping trips, I'll see if I need more. Thanks again.
One other alternative to a converter is to simply buy a small battery charger. I have this one (below) for storage, but it would also power LED lights. You can wire in a plug or just attach it to the battery with the pinch clamps.

Schumacher SC-200A Speedcharge Charger/Maintainer : Amazon.com : Automotive
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Old 03-08-2013, 05:56 PM   #16
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While you are waiting, if you also want to extend the life of your battery, consider a converter like the Progressive Dynamics PD-4045 power center/converter and 3 stage charger. It is easy to install and will make your trailer very, very happy.

For about $150 it should be good to go for another 25 years.
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Old 03-08-2013, 06:13 PM   #17
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I knew the solar installation would take a while to complete, so I purchased a float charger from Harbor Freight. Its been doing a good job of keeping the charge up so far. I read that it is better than a trickle charger because it shuts off charging when the battery is fully charger.
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Old 03-08-2013, 06:21 PM   #18
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I knew the solar installation would take a while to complete, so I purchased a float charger from Harbor Freight. Its been doing a good job of keeping the charge up so far. I read that it is better than a trickle charger because it shuts off charging when the battery is fully charger.
That's good! It will keep the battery from going flat and getting damaged. The charger that I linked above is kind of a bigger version of that HF float charger in that it charges, then goes into float mode for storage.
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Old 03-08-2013, 07:06 PM   #19
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[QUOTE= I do have a smartcharger I could easily bring along for the battery, and to tell the truth I'd be glad to be rid of the "hum" of the converter!

Francesca[/QUOTE]


Do You know why converters "hum"?.......


Because they don't know the words!

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Old 03-08-2013, 07:41 PM   #20
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Thank you Tom. I keeping all of these recommendations as a resource as I tweak the mechanicals, as I get more familar with the Scamp and determine what I actually need to bolster the existing electical system.
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Old 03-09-2013, 06:11 AM   #21
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Iota smart battery charger

I use an IOTA 30 amp smart charger. I removed the "converter" portion of my converter but kept the DC distribution panel.
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Old 03-10-2013, 06:45 AM   #22
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Thanks for the opinions everyone . I guess it doesn't hurt to have my little homemade pc power supply on board
,at least I wont hear a hum just a whirl of wind .
Can't wait till it warms up outside so I can tinker with the trailer . Long winter this year.
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Old 03-10-2013, 07:43 AM   #23
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Also Linda, good choice with the MPPT. Although both styles work well the MPPT is 25% to 30% more efficient than PWM. Your 100 watt panel is now equivalent to a 125-130 watt with a PWM controller.
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Old 03-10-2013, 07:09 PM   #24
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Also Linda, good choice with the MPPT. Although both styles work well the MPPT is 25% to 30% more efficient than PWM. Your 100 watt panel is now equivalent to a 125-130 watt with a PWM controller.
Well I have this forum to thank for that choice. I have poured over every thread relating to Solar panels. I thought I would go out of my mind for a while, because I kept going back and forth over whether to do permanent install or make it portable. But what I knew I wanted was light weight (the new semi-flex panel is only 4+ lbs) and the MPPT controller, based on others advice. Now I just have to see if I can install it myself without destroying it or me.
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Old 03-10-2013, 07:15 PM   #25
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.......Now I just have to see if I can install it myself without destroying it or me.
About the only serious thing that you can do wrong is to short the leads from the solar panel when it is attached to the battery. I put in a heavy duty switch so I can turn off the power from my battery when I work on the electrical system or in case something starts smoking.

Heavy Duty Battery Cutoff Switch
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Old 03-10-2013, 07:46 PM   #26
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Linda I am with Norm and Tom on this one. If you have the wiring in place already I would just put a new smart charge converter in it. I dont hear the one in mine at all. I also have a solar panel and do camp a lot without power. But when camping in cooler weather and at a spot that has power it is a big plus to be able to plug it in an not have to worry about how much the furnace is drawing down the battery. Also nice on bad weather days to be able to plug in and listen to tunes and watch a couple of movies and be warm at the same time without having to keep an eye on the battery monitor. Also handy to be able to just plug the trailer in at home to charge it up if its been sitting for more than a month without use - mines stored undercover so the solar isnt of much help there. Yes you could get a portable charger but its going to weigh the same and take up as much space as a new converter and you will need to take the cover off your battery to connect it up each time you want to use it - IMO way easier to just plug it in :-)
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