I have had my Renogy rover elite 40 amp charge controller now for about 2 months.
Let's start with the good stuff
The quality of the charge control is good, nice heat sink and solid construction. Seems to handle the rated 40 amps!
Now for the bad.
1st off support sucks! Days between emails and have yet to speak to anyone alive over the phone.
2nd off, there is no user mode on the controller. So it will not kick out untill the battires are at 11.1 volts! This can't be changed. Even my 40.00 dollar cheap controller had that feature.
3rd the software sucks! The big reason I got this unit was data logging. So after pay 40.00 bucks for the bt2 adaptor I was all set. To bad the Renogy DC home app sucks. I have to be in the same room for it to connect toy iPad! Then when I got it connected the data does not look right. I have verified it by using a few different data logging meters.
In the end this is a company who does make pretty good charge control but they forgot all the details that would make it useful. I regret ever going this route, I will be upgrading soon to something a little better.