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Old 10-13-2018, 07:39 PM   #1
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100 watt solar from Sams Club

This is a Coleman 100 wat solar panel and controller from Sam's Club for $140. I'm just looking to extend the time between charges, not looking for anything too fancy. Is it worth the money?

https://www.samsclub.com/sams/coleman-100-watt-crystalline-solar-panel/prod22420415.ip?xid=plp_product_1_2
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Old 10-13-2018, 09:11 PM   #2
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Might be great for a motorcycle battery but it's only rated at 8.5 amps and that's at 'peak' sunlight. I seriously doubt it will put 20 amps back into your battery in a whole days worth of sun unless you keep tipping it towards the sun.
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Old 10-14-2018, 08:08 AM   #3
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It would maintain your batteries while the rv is in storage (assuming it is stored were it gets sun) but is not going to do much while being used.
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Old 10-14-2018, 08:23 AM   #4
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Quote:
Originally Posted by MTBer View Post
This is a Coleman 100 wat solar panel and controller from Sam's Club for $140. I'm just looking to extend the time between charges, not looking for anything too fancy. Is it worth the money?

https://www.samsclub.com/sams/colema...lp_product_1_2
I'm pretty sure a 100 watt panel on it's best day will only put out a little over 5 amps.
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Old 10-14-2018, 08:30 AM   #5
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Quote:
Originally Posted by MTBer View Post
This is a Coleman 100 wat solar panel and controller from Sam's Club for $140. I'm just looking to extend the time between charges, not looking for anything too fancy. Is it worth the money?

https://www.samsclub.com/sams/colema...lp_product_1_2
Not at my Sams but found this on Amazon - Hook a few up to get plenty of Amps - https://www.amazon.com/dp/B00DCEKKQ0...5-8929d75e6129

Best of Luck,

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Old 10-14-2018, 09:08 AM   #6
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It would maintain your batteries while the rv is in storage (assuming it is stored were it gets sun) but is not going to do much while being used.
This.
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Old 10-15-2018, 05:21 AM   #7
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The 8.5A controller is $16-20 so you are paying $120 for a 100W panel. For $60 more you can buy a 200W panel or 92 cents/watt delivered. For what's it worth I recently bought 102W panels for $55 each...54 cents/watt. I did have to go 75 miles to pick 10 of them up.

https://www.ebay.com/itm/1-200-Watt-12-Volt-Battery-Charger-Solar-Panel-Off-Grid-RV-Boat-200-watt-total/263697452462?hash=item3d6597cdae:g:JdEAAOSwp7tadnM w:sc:FedExHomeDelivery!30512!US!-1:rk:3f:0
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Old 10-16-2018, 06:43 PM   #8
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I bought a morningstar controller 45 amp for < $175 I buy Grape 100 watt panels from Home Depot for less than $100 when they are on sale. Started out with 1 panel and add another when on sale. Now up to 400 watts. Buying a little at a time is easier to swallow IMHO
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Old 10-16-2018, 08:00 PM   #9
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That 100 watt system will recharge your battery if you use almost no battery. To get the most output, it would need to be angled correctly to capture the most sunlight, moved throughout the day, and you can't get peak sunlight capture in the early morning or later evening hours. I have a two hundred watt set up from ZAmp Solar that can charge my house batteries when I've been using them lightly for the radio, a couple of LED lights, and occasional water pump usage.
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