SUNER POWER10W 12V Solar Battery Charger Maintainer, Built-in Smart MPPT Charge Controller, Adjustable Mount Bracket, Waterproof 10 Watt Solar Panel Kits for Car Automotive Boat Marine RV Trailer

Purchased 2 for my Utility & Dump trailer 30W chargers, but have yet to install on my trailers. I've been using them on my lawn tractor, Zero turn and log splitter for about a month now to maintain the batteries and I'm pleased with how good they work. They are easy to move from one to another by just unplugging from one and re-plugging to another. Seems to charge well enough even on cloudy days. They are keeping my batteries at 13.4v to 13.6v. I've decided to purchased 50w chargers for my dump trailer because I want more charging capacity for the larger batteries because the batteries are discharged when in use.My only complaint is that it would be nice if the adjustable angle mechanism had a spring loaded de tent (like on a walking cane) instead of the bolts and wing nuts for angle adjustment. Also, would be nice to have a long and narrow panel to accommodate location under the header of my dump trailer. Wattage size of 50w to 100w with a length of about 5 foot and a width of about 12" to 16"

I have this mounted as a permanent charger for my Patriot gate opener. Took me a bit to figure out how to hook it up to the original patriot hardware. Has universal type SAE connectors which are great if I have a period snowy or stormy weather I can just easily connect a trickle charger temporarily to keep the battery topped off. Easy peasy!I used the battery direct pole connection option instead of the clamps. It’s nice to have that option.The only thing that was difficult was tightening the butterfly nut located under the mount, there is not much room to get your fingers or a tool to tighten it. I get strong winds here and it needs to be tight.

And so far was easy to mount looks good we'll see how long it lasts I'm trying to see if the controller actually works built in it's flashing red like it's charging but I had another one on it for a while I got dual batteries the main problem I found and maybe it's not a big problem at the polarity was opposite to my trailer wiring some picture you can see I had to put in one of those diverters at crosses it over luckily I had some in stock I'm not sure you know I'm understanding and a lot of these aren't standard controllers I mean the solar panels all plugged directly in with no problem except for this time but so we'll see what happens in a long time is mounted up off of my building it keeps my trailer hopefully you see how it keeps my trailer going a brand new dual batteries

Love these little MPPT panels. I Use this small panel to charge my kids power wheels garage. A Green EV solar Station. It works great and the SAE connectors make easy plugs for toddlers.

Bought it mid November to keep my pickup charged while away for xmas. My previous one 10w sometimes struggled to keep my battery charged if weather inclement.I installed it checked it's output. All seemed good. Parked the pickup with the panel on the dash in Florida.Came back yesterday to a total flat battery. The battery was new (3 months). Checked the unit and it has no output. Very disappointed. Used once and it died, of course no warranty, its now 2 months old and used once.UPDATE!Due to pressure of work I did not contact the company or amazon to express my disappointment.HOWEVER, the company must check their reviews and contacted me out of the blue. After replying to their email concerning technical info etc. They have now sent me a new F.O.C. panel which I plugged in this morning and is now working fine. As far as I am concerned this is great service, and going beyond the call. I'm very impressed in them checking reviews to make sure their customers are happy and contacting me when they realized my disappointment immediately. Thank you Mason and the staff at Sunpower for solving the situation. Incredible aftersales service!

I bought this solar panel because I did not want to spend over $300 for a commercial boat lift solar panel. The shore goes north east going to the right as you lookout from shore and south west as you look to the left when you lookout from shore. I mounted this on the south west side of the boat lift using 2 4" diameter hose clamps. The only thing is it does not come with the covers when you take the boat out, but I was able to find some.This is plenty for a group 24 battery because the alternator does most of the charging and this takes it the rest of the way when the boat sits for 5 or 6 days of no use. I have not tried this for a group 27 or higher trolling motor battery for a 12 volt system. For that, I use a commercial boat lift battery that can get higher up above the canopy so it can get more sunlight throughout the day.

I purchased the 30W Solar Charger, out of the box the charger would not produce power, I checked both sets of leads, neither would work to detect the Battery, I hooked my fluke tester directly to the leads coupling with the panel facing directly into the sun and it was not producing any power (No voltage). All it will do is the SOR flashes Red to Green on the charge controller. I got online to try to contact the manufacturer, no phone number listed, (1st indication that you should not be doing business with them), so sent Emails to them, (crickets). I finally had to contact Amazon, then Suner Support got back to me, by this time I had to return to work, then they want videos of what it is doing. In short, I would have not given them 1 star, but I thought if I didn't my review would not get posted.

This is the 3rd panel I have purchased from Suner Power. I love that it has a built-in controller to not over-charge the battery. On this order, I still needed one of the brackets that mount to the side of the solar panel. I contacted their customer service on their website and received a response the same evening. By the next morning, they had a new bracket already boxed up and ready to be shipped to me within a few days. I am very pleased with the product, and even more pleased with the customer service this company gives to stand behind their product. Good customer service is getting harder to find these days, and I feel confident in placing my trust in this company and its products. I would recommend that you purchase your panel from Suner Power!