EPEVER40A Solar Charge Controller MPPT Solar Panel Charge Controller 12V / 24V Auto Working Max PV 100V Solar Charge Battery Regulator with LCD Display for Gel Flooded Sealed Lithium Batteries

Good product, I bought 2 about 4 years ago and they are still working properly!

Easy installation and users can define battery parameters to exactly match the battery manufacturers recommendations.

Working good so far.

Liked that it was reasonably priced and relatively easy to set up. However, didn't like that it had no preset Lithium Ion battery set up. This seems like a big oversight or that the company hasn't updated their software in awhile. Was able to program in the Lithium Ion settings in a user profile though. The separate WiFi adapter I purchased worked well to display the total settings and power received in a local network. Remotely, over the Internet, I could only view the solar power received and the power used in the low power built in converter, which I can't really use. Wish it could show the same information as on the local network.

10 A. Keeps the battery charged even on rainy days, for my dusk to dawn pole light in the yard. I have used EPEVER chargers for 10 years now, and they are all still good and operating. It's sort of set it and forget it operation.

Seems like a great product, hardware wise, I like it, in that respect. Had to use the user setting on the computer for the lead acid category to get it to work with lfp batteries. The lithium profile does not work, nor did the user lithium. Software is buggy, kept telling me over voltage disconnect is not in range, it is, and it is of proper value comparitivley to other settings. Would not suggest buying this if you have lithium batteries, and can't deal with the hassle, on the other hand, if you can, it has nice hardware features.

Works good and has a comprehensive display.Display is tough to read if you are at an angle to it.My only suggestion would be a heavier and wider screw set up for installing the cables.2 different lines have fallen out but stayed after I tightened them a bit more. I'm afraid to torque them further as it starts to pop the screw driver (only a small tip fits) and flex a bit.

I have had my charge controller since Nov 2021. I just found out it is still under warranty. However, I have no issues. Had I to do it over again, I would have ordered the 60 Amp unit, but in 2021 , I was just learning. Solar power is addicting. Once you have a little, you want more. I instead upgraded to two matching units at 40 . I am very happy with this product an I highly recommend it. Support can be reached by email and they respond by the next day. There is also a lot of information if you create an account on their web site.