I got the 60A version, it has been working fine for about a year. I have it hooked up to a 48v LiFePo4 battery with 4s2p 200W panels (About 130v). It took a few tries to get the settings dialed in, and it is nice having either the software or remote screen to set it up as the built in screen/controls are pretty basic. I am not pushing it to it's max, but it seems to stay in reasonable range mounted to the wall.Works awesome, I have the 60 amp mod. And the 40 amp mod.The controller works great but it calls for 2awg wires from controller to batteries. When you tighten the black holding bracket be careful. The screw snapped the plastic tread on the controller on one side because the wires are larger than the slots in the bracket.Really happy with this unit. It's heavy and robust and the only one that EPEVER had that could handle 200V.Running 175V on my 48V 5kWh solar setup with about 30 Amps. Most of the configuration is done thru the MT50 unit as I find it time consuming on the MPPT itself. The terminals can handle 4 AWG which is what I use to connect to my 200Ah LifePo4 batteries. Also bought this to keep my options open if I decide to parallel 2 to 5 more units for a total of 30 kWh. No thoughts on longevity as it was installed about 1 month ago but so far so good.I recently purchased this item and as I was installing it the plus and negative cables where crossed and I blewthe fuse, thank God that is all that happened, but trying to get in touch with vendor is in my word useless, I called the number listed in contact us and first it was not in service then voice box was not set up, so I emailed them but only time will tell if they answer, will update review when I get an answer. This is my update; they did get back to me and they wanted to know which fuse and I told them, and they had it but did not tell me if it was covered under warranty and or how much they were, so I bought some online now the once I got where 80-amp 32 volt and not the once stated in the manual, now I have found a place you can order them from if it happens to anyone I now have purchased the correct once from Digi-Key 60 amp fuse is part # 142.5631.5802, 150 amp fuse part # 142.5631.6152 all are 58 volt, I hope this helps.Have installed solar for 20 years. If you don't buy the additional products and live beyond the grid forget this controller. If you don't have the correct browser will not download. Check my reviews. I don't write them often so if I give a thumbs down it't real. How it works is when a review like this is posted another will follow that claims the product works great. Amazing, isn't it.Well this is something i have put off but need others to be made aware before purchasing. Tracer controllers have lost their quality as well reliability. I have used Tracer controllers since their largest mppt controller was 40A. Their older controllers would actually do what their specifications stated, however now not so much and what's worse is Epever support team will not help you. I have a 24v LIFEPO4 525AH battery bank and at the time 8 240w panels that were wired in a 4s2p configuration(152vdc). If you look at the specs of the 10420AH controller it should be able to handle this but nope it went up in smoke literally. The controller was working just fine for around a week then one one day in the middle of the day it just stopped charging. The controller appeared to be working as it saw the battery voltage as well the solar array voltage there were no errors and the green led was showing normal condition but there was no amps on input or output. As i was trying to diagnose the issue checking my solar array the wiring, breakers, settings ect.. then lcd screen went off and there went the magic smoke at the same time my 100a breaker for my battery bank tripped. Epever support is a joke they say it should support this but its not optimal that i need to rewire to a 3s config and what i say is contradictory. When the truth is they don't seem to be able to follow the events and understand that all i have been asking is why cant this controller handle a 4s config @ 24vdc when the specs state the controller can do 200v 180v after 25C. I did get a replacement but because of the fear of having another controller go up in smoke i rewired to a 3s3p configuration and now needing to remake my solar panel mounts as well upgrade the wire awg due to the increased amps. Needless to say I am in the market for a different manufacture mppt controller. So buyer beware if you plan on pushing this controller it will push back by being a fire risk.Bought two recently. EPEVER 100 Amp MPPT Solar Charge Controller 200V . Running them hard, up to 90 + Amps they're doing very well. Laying on their back with a Laptop Cooling Pad under each works very nice. One was missing the RJ47 cable, not a big deal. They get pretty Hot I'd suggest a small helper fan mounted in any configuration. 18 Newpowa 210 watts on one, & 16 Richsolar 200 watt on the other. The Newpowas have a much lower Voltage and work a little better if you can deliver the extra Amps. The 200 watt Richsolar ran the Voltage over with more than 16 of them. Never had to call Tech Support, they're working as well as the smaller 40s did..