EEEKit MPPT 100A Solar Charge Controller, Upgraded Solar Panel 12V 24V Dual USB Intelligent Regulator, Adjustable Parameter Backlight LCD Display and Timer Setting, Multi-Function Protection

This is my second controller of this type purchased, the first is still working great after several years. It is surprisingly configurable and easy to set without any additional maintenance. However, it is worth mentioning that this unit has a common positive (+) connection across solar input, battery and output. If the battery shares a common ground (-) with the solar panel, or output load, it will not function properly. However, I was able to use a PNP Darlington transistor (TIP125) to switch my low wattage load (C) from the load positive (E) with a 1K resistor from the base (B) to the negative connection of the controller’s load terminal. I left the solar panel’s ground isolated for simplicity. A single TIP125 should handle 4A maximum with proper heat sinking. If needed, adding additional parallel TIP125 with base resistors should increase the capacity. These extra couple of components allowed me to keep a common ground between the battery and load. It was worth my effort considering the low cost of the controller.

this will not operator over 30amp it will get too hot and shut down (good heat protection) . running good for 12 mo . these units are NOT large amp controllers 30amp max (100amp?) the largest wire gauge that can be used is 10awg @12vdc that is around 30amp max cap, so, what does the 100amp mean??? NOT 1200w ???

My step son bought the same solar package I did. He mounted his before me. The controller that comes with the kit went out within a few days. He bought this so Idid too. His and mine has been working flawlessly for a few months now.

I am installing a solar aerator for a pond on my property. This controller was was included in the design specs I was using. First, the wire connections on this unit are very difficult. It’s not sized for the 10-gauge strand wire used in most solar unit wiring. Second, the units fail if they get too warm. The first unit caused my battery to over-charge. I found it would intermittently got out and the solar panels would charge, uninhibited. I assumed the unit was faulty, purchased a second one, and found that the connections to the inventor were faulty. I almost burned out the pump. Spend the money on a better quality controller. this one isn’t;t worth the price even if it were free.

So overall, it does work. If you are relying on this to charge a small scale setup then it might work for you. I used this in a Solar Kiln build running two 325w panels and a 12v deep cycle battery to power three 12v radiator fans pulling 11 amps each.Out of the box the Controller worked, recognizing the battery and the panels when connected in that order. The "load" output is good for an LED lightbulb or some other VERY low input device. The integrated USB is a great feature but ultimately was not tested.Do not be deceived by the power rating this advertises. In my setup this lasted for about two weeks and then it stopped recognizing the panels and charging the battery. Several other reviews mentioned the "moon" symbol. This is what I experienced. Disconnecting the panels and then the battery to try and "reset" the controller did not work. I also noticed that the power coming from the panels decreased over time. My guess would be that the circuitry is capable of handling the stated inputs/outputs however NOT for a long term use. I believe the circuitry started to degrade and this is why the power output started to decrease and eventually would not accept input from the panels. I also noticed that eventually, even with full sun hitting the panels, the draw was too much for this controller and it wouldn't run all three fans.As others have mentioned the terminals are small. The most I was able to stuff into the terminal was a 10 gauge wire. For the amperage rating, 10 gauge is not enough. The PV wires from the panels barely fit as well. Another sign that this controller is not suited for the advertised rating.Look, I'm sure this works fine for others and for the price it makes total sense. I may end up utilizing it for my solar electric fence or the gate openers that have MUCH smaller panels and inputs. I think it would work well for that application.Ultimately, I ended up purchasing a Victron 100/30 Solar Controller at nearly 10 times the price of this controller. I will tell you that not only did the Victron power all three fans but it charges the battery as well. There's just no comparison.If you are purchasing this to control a larger array and batteries I would consider it a testing unit before you invest in a better controller.I'll be upgrading my wiring to 6 AWG with the Victron as you can feel the heat dissipating from the 10 AWG currently. Another indication that the output was not even close to advertised.Overall this was a very inexpensive choice for "development" purposes

The media could not be loaded. Works like a champ for my 3 projects so far I just mount it where and when I need it for a ton of uses!! Off grid super power!!

Did what I wanted it to do

Can't complain too much about this one. It checks all the boxes for basic functions. Perfect for that small solar build for your shed or trailer or outdoor lighting.Negatives: It's a 30amp controller so it should be able to handle wires that are rated for 30A. You can get your wires in with a little work. The terminals are just soldered on, not mounted, so you have to be gentle when you insert the wires and try to tighten it down.The manual is what you'd expect. English as a second language translation with all the oddities and spelling errors. The instructions are incomplete, so you are going to have to do some digging and hit some videos if you want to know how the controller works. To be fair to our friends in China, manuals and instructions from electronics and electrical equipment was garbage long before they began making things. Find your friendly neighborhood electrician and electronics experts to give you a hand if you are unsure.All the same I have no problem with the negatives for the price this unit goes for. Definitely will buy one again when I need another for my outdoor lighting projects.

Is great, has worked awesome. One small complaint is that is rated for 60Amps but would say can only accommodate a #8 AWG wire. Depending on location and your local code, I find that a bit light.

Worked as it was described, but I was pleasantly surprised when the flashing arrow showing that it’s charging,stopped when fully charged , then started again when battery needed to be topped up

J'ai installé ce contrôleur à mon chalet muni de panneaux solaire et ça fonctionne très bien.

Utilisé en régulateur en sortie de panneau 12v 60w.Il fait le job.

Works perfect does what it is supposed to do.