MPPT Solar Charge Controller 40A 12V 24V Auto Max PV 100V Solar Panel Regulator Common Negative Ground LCD Display Tracer4210AN G3 for Gel Flooded Sealed LiFePO4 Lithium Battery (40A MPPT)

I can now remotely monitor my solar controller and change the battery parrametters without any problems

I now have 3 EPEVER controllers and am happy with all of them. Seem to work really well and no issues for several years. High quality.

Utilisé pour la vanlife, ce régulateur MPPT est excellant. Son prix est abordable, pas de problème en utilisation quotidienne. Pas de difficultés à comprendre et à personnaliser les paramètres.

These work well, as I bought 2, one for emergency use. I live off grid, so these are my power source. I recommend getting the remote, because the pc app is hard to figure out. Watching a few videos was necessary for me. The remote makes it a breeze to change all parameters. The wire tightening screws/connectors are small and feel like the same weak ones $15 controllers have. The voltage is inaccurate in the daytime, while there is charging/discharging happening, but better at night. It's usually +.2-.3 volts higher than my accurate multimeter reads in daylight. I have three lithium 100 ah batteries wired in parallel. .2 volts is a LARGE percentage of the cycle on lithium 12v batteries. When the controller says 13.6-13.7v, which is my regular float, the batteries are actually as low as 13.3v. I have to raise my float to 13.7-14.0 sometimes, just to make sure they're full in the evening. At 13.6v float, the batteries are carrying my load, even in bright sunlight. I remember the controller acting different with my lead batteries, and just read another review saying the same. Another quirk I found, is that when I set the boost charge at say 14v for 60 minutes, it's not at all enough. I found that instead of charging the batteries TO 14 volts for 60 minutes, this charges the batteries AT 14v for that time, then the charge drops to my float voltage. So if I drain my batteries to 70%, I need .9 kwh to refill them, in addition the1 kwh I use. With 1 hour of 14 volts and the rest of the day at 13.7v float CHARGE VOLTAGE (13.4 actual), they just aren't getting enough power to refill them to 13.3 or so at the end of daylight. So I really have to watch them, and occasionally manually adjust the float voltage to as high as 14v, just to have 13.3v at sundown. Here's an example. This evening, I had 130 watts of draw, and the charge was only like 50 watts. The battery read 13.35 volts. So I was running on my batteries, instead of sunlight. I had to turn up my float to 14v, before the wattage went to like 150w. So yes these work, and I like them, but I have to keep my eyes on voltage.

I had MPPT inverter for over a year and multiple attempts use arrest for 85 port connection and my computer to program. It was very painful, never really succeeded. Always trouble through the windows to find the correct driver. Then the software never really dumped the programming into it and I give up. Then almost a year later after that event I decided you know. Let's give it a try. This little remote console I say red that it should be able to program my inverter to charge my lithium battery properly. Guess what? It took me 10 minutes to set everything up. The word of advice in my setup. I do have a full access to my MPPT inverter and it's reads out and it look like I don't need to have a remote console so I always carry the remote cancel with me in my camper just like a programming pad and I'm using only when I need to change something. Day-to-day charge level voltage currents I'm using the readout of the inverter. And this pretty much became a maintenance counsel.