100A MPPT Solar Charge Controller 12V 24V 36V 48V LCD Display Battery Intelligent Regulator Max 100V Input Dual USB for Lead-Acid/Lithium (100A)

This solar controller performs its basic function, but there are a few points to consider. The LCD screen is clear and allows you to easily see the voltage and charge. It's compatible with various systems (12V to 48V), which is convenient. However, the quality feels average and it's not always as accurate as other, more reputable models.

this product stopped working only a month after i have had it. it is secure not it the direct sunlight. I live in Arizona so rain is not an issue but it is still out of direct rain fall. I am extremely disappointed and upset i cant return it because of the limited windoe amazon allows so im stuck with a paper weight at this point stay away dont but this crap.

After three months of installation, they operate with no problems, even in the shade of Arizona's heat. I ordered them because they have the larger screw in ports for the 10 or 12 gauge wire, solid body, good heat escape fins on the back, and an easy-to-use button. And most of all, I run 3-- 20-amp 12-volt system, so I buy equipment that will handle at least twice the load I put on it, instead of like my neighbor, who underbuys and burns his crap out. Everything is excellent about them.

Works well

I have two and they work just as described. Please read the information shipped with it say you don't over power the unit. It has specific settings for how many watts you can put into it for what voltage you're actually running it on

The size was bigger than expected from photos but it was a happy thing to find full sized screws and large holes to put in pretty big sized wires. Not sure of size. Screen is a little small but tells the tale. Easy information update with no confusion. My amateur wannabe engineer says put washers or just strips of metal where mounting holes are so no breakage in hard conditions. The case seems brittle plastic instead of forgiving but for price, especially if wattage and electronics are good inside, is a real treat. Happy to have bought it. Others reviewed it okay. One one is better.

Terrible circuit design. The controller is powered from the battery side, not the solar panel side. This means that if your batteries go dean overnight, when the sun comes up IT DOES NOT WORK. It's a complete pain to use. You have to use a separate battery charger to get it started, completely defeating the purpose of solar power. Do not use anywhere that you can't charge the batteries from the grid or another generator.

For the price. You cannot go wrong. I had rated this item lower. But after realizing this charger is compatible with 12 to 48 volt batteries, I had to change my rating. The more expensive controllers aren't as compatible. DIY perfect. Specially on a budget. It works for the ranges listed. I went from 12v to 48v system with this controller. No issues. Found out the hard way when I tried to do the same with a more expensive controller and they just don't have the compatibility. That controller is a paper weight now. This controller saved my day.