Sunforce58033 Coleman 18 Watt 12-Volt Solar Battery Charger Kit, Durable Aluminum Frame and Shatterproof Tempered Glass, Amorphous Solar Technology, Weatherproof, Connects Directly to Battery

I needed a way to keep my 2 12 volt trolling motor batteries (operate together to make 24 volts) charged as my boat resides in outside storage area with no power available. Although just starting use of the panel to charge these batteries, I must say it worked like a charm on the first attempt. It is simple to set up and operate and though they may take a day or so charge a battery they keep them charged full if using the controller that comes with it. If what you need is to keep batteries charged when there is no plug in electricity available, this will do the job. I'll see how it holds up over the long haul, but for now it is perfect for what I needed it for.

This is one of my most favorite products I've ever purchased from Amazon. It's a shame they don't make this exact setup anymore. I've had my first one for 10 years and it is going strong to this day! It's truly amazing how long these will make a battery last because it keeps it in the most optimal range that even your alternator can't. One stays hooked to my offroad vehicle and the other to my lawn mower...most people replace lawn/motor cycle batteries annually , my mower battery is 6 years old and still cranks up like a champ!The reason for writing this review is because I am an area of Western North Carolina that got hit hard by hurricane HELLene...it was the worst storm my area has ever seen and I was without power for 2 weeks...these solar panels were a CRUCIAL part of keeping phones, flashlights and any other 12v product charged. Without them, I would have literally been in the dark. People think things aren't an issue and serious until they are. Be wise, purchase a few of these.

This thing is on the heavy side and doesnt put out as much power as Id like. From experience Ive found that the black solar panels are heavier and put out less power than the blue ones. This is a black one, they took a picture of this thing at the right angle to make you think its a blue panel.

The Solar Kit was what I expected and appears to be well made. Seems to keep a 12 volt camper battery charged. I need another camping season to fully evaluate this product.

Works very well even in poor light conditions. The panel itself seems to be very high quality along with the charge controller.

Very simple to connect, keeps my generator battery fully charged whenever the sun is up. Probably overkill for my application but at least I have the piece of mind knowing that when needed the battery will start the generator.

After talking with the manufacturer the details are incorrect after emailing the seller they sent me this info which contradicts the listing.Coleman 18W, Solar Battery Charging Kit, With 7A Charge Controller, Charge Your 12V Batteries With The Sun's Energy & Regulate That Power In Order To Improve Your Batteries Lifespan, Works With Automobiles, RVs, Boats, Tractors, ATVs, Electric Fences, Deer Feeders, Telemetry, & More, Includes Pre-Cut Holes For Easy Installation, 4 Stainless Steel Screws, Battery Clamp, Clamp Adapter, 12' Wire, 7A Charge Controller, Works In All Weather Conditions, Ultra Bright Blue LED Provides Charging Indication, Built In Blocking Diode Protects Battery Discharge At Night, Made Of Durable ABS Plastic With An Amorphous Solar Cell, Maximum Output 18W, 1.2A, Maintenance Free, Easy Installation.So buyer beware this is NOT an 85watt panel.

Works Great, Water Proof.Using on Colgate 26 sailboat to keep batt charged. Stores away securely. Would buy again.