40A MPPT Solar Charge Controller: 12V/24V DC Output, Dual USB, for Multiple Batteries (LiFePO4, AGM, Sealed Gel, Flooded Lithium) & 18 - 100V Panels, APP WiFi Control

After about 2 weeks it's working well. I purchased the 40A for a 400 watt system. I like the app so you can monitor the status, and that capability wasn't an extra charge like the Renogy product. Seems to be as good as, or better than the over-priced Renogy products. Fans work when there is higher solar input.

I really like the WIFI connection allowing me to monitor it from the house as it is mounted in my garage. I was limited to the WiFi because there was not a detectable BlueTooth signal to connect to. The WiFi setup was tricky setting up especially on the second device and would not complete a setup on an old cell phone I keep at the system instillation for monitoring all the connected units. At this time I am only using it at 25% of its capacity at this time as upgrades are coming in the future. I am happy with it and would recommend it.

Good purchase very happy

Llegó muy rápidoEl producto es muy buenoMe gusta

It charge my 12 volt battery but not the 24 volt battery. Not sure if it's deffective .

Bluetooth doesn't work.Description says 180v, but sticker on unit says 160v max.Says 3 stage charging, but only has one voltage level to set.Instructions are useless.

This review is for the 20A MPPT Solar Charge Controller 12V/24V DC Output, Dual USB, LCD Display, for LiFePO4/AGM/Sealed Gel/Flooded Lithium Batteries & 2 - 50V Panels.So far, I am liking this Solar Charger. Although the screen is small to my 65yo eyes, and not backlit, I can see it with my glasses. It does display a lot of information on two rotating screen display every 5 seconds. So before I go and mount this in my off grid shed, I want to test it out and check out all the features and learn all I need to know about setting it up and programing it.Test Rig: LiPo battery 10Ah hooked up a 20W solar panel and then to the solar charger. All working as it should. See photos of my test setup. Since I was using a fully charged battery, I didn't get to see any amp draw off the panel, just the voltage. I plugged two of my USB Camping lights into the charger load side. If not programmed for load when charging, all you have to do is press the ESC button once to turn on load, and press again to turn off load. These are 5V 0.5A lights each.I am installing in my shed this solar charger to take the place of my 10A solar charger. I am adding another 100W solar panel to the roof to add to an existing 100W panel. Currently my 100W panel keeps my two 50Ah LiPo batteries topped off. However recovery time is slow when recharging. I use a 2000W inverter to power my electric tools and battery chargers for my mower. I never have to pay for mowing my yard. All power comes from the sun.Pros: Build Quality seems good. I like the colors. The manual may have a few misspellings, but is packed full of information to educate you on different charging and use techniques. It is written in easy to read large type format and is 13 pages. I can only wish others would do a great job on the manual as this one is.Another pro, is the mounting template provided along with the proper screws for mounting. Great Job!Con: Screen is not backlit! Not really a major con, but just an inconvenience.I understand others have had issues with their product received. However from what I can tell you is this is working properly and I am reviewing the product delivered to me only. With that said, I believe this is a good value for the money asked. Take some time reading the intensive manual before doing anything. Remember to hook up the battery choice positive first, then negative second. Go in and program your unit for the type of battery you are using then proceed to wire up your solar panel. Positive first, Negative second.Now enjoy!Update:Installed in my off grid shed and keeping two 50Ah batteries fully charged. Again still very happy with how well it works. Now I have added another 100W panel to go with my other 100W panel. More Pics Added.I'll let you all know if things change.Update:This product is still working great for me. I have two 100W 12V panels and one 100W 24V panel tied into this solar charger. With direct clear sunlight I will average 18VDC input at 8.5 to 10 amps and charging two 12V 50Ah LifeP04 batteries with no issues. Reason for the update is because I misplaced my manual. Thanks to other reviewers I was able to look at your review with a few pages uploaded that ended up helping me. I eventually found my manual. So I want to return the Thanks to others by putting the manual here in case you have misplaced yours.Still this has been a very good charger so far. I was easy on the screws not to tightened down as to strip them out. For the price of this product, I think it is the best value out there, of course unless you get a dud.Again, Enjoy!

does not accept large gauge wire, and the wire clamp stripped out making the unit unusable