[Upgraded] 30A Solar Charge Controller, Black Solar Panel Battery Intelligent Regulator with Dual USB Port 12V/24V PWM Auto Paremeter Adjustable LCD Display (30a)

This worked great to replace my Harbor Freight controller that came with the HFT solar kit. I used this for many months straight, it worked perfect and was reliable. Highly recommended.

5 stars! It does the job for the rock bottom price of $10. Be amazed!Ok, here is reality. I have used this unit for 7 months to experiment with a 100W system.It regulates the charging of my very nice no maintenance lead acid batteries. It knows how to do this and most of the time it also knows that I am setup in 12v mode.1. Do not use the 12v extension or the 5v USB connections. They really are not functional for any reasonable current output. The board will stress, a resistor heats up on the board and the LCD will blink out temporarily.I have not fried the board but I would advise connecting all power draw, USB or otherwise through a fuse block directly from your batteries.Sometimes the controller decides for no good reason that you are in 24 volt mode. This isn't good because it seems to happen when my battery is almost fully charged over 13V. That means it will try to overdrive well over 14V and possibly 6 or more amps into a full battery. This is no good.If you catch this your first easy sign is the battery charge picture will say barely charged... Disconnect the solar, then the battery... Wait 15 seconds then plug the battery back in... Carefully connect your solar panel. Pray it stays in 12V modeAt the moment I unplug the solar panel when the battery is mostly charged and the system decides that it's 24V. I am only using this as a test bed drawing small energy for 5V USB networks at the moment.When I get serious and add more power and a proper converter I will pay good money for a real controller.So, great for the low price of $10 , great learning tool but pay real money if you want a reliable system you can count on.

No reverse isolation. Battery will discharge through solar panel input ports. Probably ok if you use as intended.

Bought this to use with a solar charged battery in my garden shed. The regulator that came with the solar panel just dealt with charging the battery and had a couple of lights to let you know it was working. This one has a digital display showing voltages, battery types and output timing.I have the output, landscape lights, set to go on at dark and off when it gets light. I use one of the USB ports to power a security camera.Installation and connection was easy. Instructions a little cryptic but can be figured out.

Just doesn't workDoes not turn on when connected to the battery. Defective just like the last one of the same shape but with blue stickers instead of red. They are all the same Defective Chinese ones you can get on t1333eeee3mouuùuuuuu for like 3.50$..

My first one did not work properly I bought another one and sent the old one back and then I also sent one to a friend of mine he has not hooked up his at all or attempted to use it I have been using mine for a few months now and it's great it puts out 24 volts but does not allow the batteries to get more than 16 volts on them great product exactly what they said it is the quality is great there's no Bluetooth but best value for your money and it's very durable

Works ok but setup is hard to understand when programing for different battery styles or setting the auxiliary light output to come on/off at a set time. Probably best used for small off grid projects like a pond pump/light etc. I would not rely on this to run an RV or other larger system.

I bought one about a year ago and it worked great until just recently when it went blank, so I ordered another one thinking it had failed and because it is inexpensive, I would just get another one. The new one failed (apparently) after about 2 days I thought. I was about to send it back when they suggested I try restarting it with a written procedure. I tried their procedure and found that it was not the controller but my battery that had failed. Both of my controllers work well now and I'm glad I didn't just send it back.