RenogyRover 40 Amp 12V/24V DC Input MPPT Solar Charge Controller Auto Parameter Adjustable LCD Display Solar Panel Regulator fit for Gel Sealed Flooded and Lithium Battery

I upgraded from a Rover 20A Li to an 40A and installed this yesterday to replaced the Rover 20 that had gone bad. I was awed by the low price ($140) and jumped on it. It’s built like a tank. I highly recommend you read thoroughly the instructions before installing any wires! You can ruin it if you do it out of sequence.The screws for tightening down the wires are small so I don’t recommend using the Phillips option. I had better luck using the flat tip screwdriver. I highly recommend the Bluetooth module BT-2 sold separately. You can monitor the status on your smartphone as well as change the settings.

Easy to install, work great. Installed about 6 months ago. Each controller runs (2) 200 watt panels and charges a 280 ah battery. In total my system has (4) 200 watt panels, (2) 40 amp solar controllers and (2) 280Ah lithium iron phosphate batteries. For a total of 560 ah. This is on a boat, it also runs a 3000 watt inverter/charger and a 40 amp dc to dc charger. No issues so far however I don’t really tax the system very much. Plenty of reserve for a night on the hook.

Perfect for the system

I wanted another Tracer 40 Amp - these are already trusted at my remote property, but apparently obsolete. Rover seems to be Tracer's replacement. The algorithm is great - power conservation from PV to BAT tested well. Two main complaints: Although 8 AWG did fit in the BAT+/- terminals, it's very difficult to get wires in the BAT and PV terminals and feel confident they are engaged. It also feels like standard torque for 8 and 10 AWG wire will break the terminals. Second item is that the user's manual left out major portions of what the operator needs to do to access necessary programming screens - it took an extra day of messing with the Rover to essentially add notes to the manual to complete what was missing. On the plus side, Rover does not use a dorky extra, expensive terminal to program that will be dead/destroyed when it's needed later. It can use USB software to set it up - my experience is that a kid with zits will have changed USB so much in ten years that no laptop then will even have a port to support it. Note to Renogy: I buy Renogy because past experience shows the somewhat premium price pays off well in reliability. I hope that Renogy insists on top quality in the future. Note to customers: I installed marine cable to large DIN rail terminals underneath the Rover, so those Rover terminals only need to be torqued well one time. Hint on programming screens you can't find - try UP and DOWN keys, not RT/ENTER. Battery parameter adjustments are only available in USER BATTERY TYPE.

Bought this unit to go with my Renogy 100w Solar Suitcase. Renogy's products appear to be quality, although the instructions on their products are a mite skimpy on information.I mounted my controller in a DeWalt case to protect it. See photos-Some things I learned:When installing the mc4 connectors with Renogy's 10awg tray cable, strip the end to install the metal connector but ALSO strip about 3/8" more of only the outer portion of the two part insulation. This will allow you, after you've crimped on the metal connector, to slide the back cap on and then slide the plastic connector (male or female) down far enough so that the two metal pieces will connect properly.Secondly... some complained about the connection at the bottom of the controller. One previous reviewer noted that if you crimp on a spade or male butt connector it makes for a more secure connection. I tried that and it works great... really appreciated the advice. Be sure to slide the spade in toward the top or face side of the hole and then gently snug the securing screw down. If (with the unit facing upwards) the wire or spade slides in towards the back, or lower side of the hole it will be below the securing piece and when you tighten screw it will not hold the wire (loosen the screw and look inside the hole). I believe that those who commented that the wire wouldn't secure in place did not have the wire on the correct side. Don't over tighten. These aren't the lugs on your pickup.I cranked my unit up today and it was working flawlessly! Thanks Renogy for a really solid quality product.... and thanks for your tech support!I will update as I get a few hours on this unit.Update 9/16/17 :Set up at 1:30 pm - clear afternoon started out at 5.9 amps but in a bit leveled out at 5.4-5.6 amps coming from the panel. Voltage leveled out at 13.4 v on the charge side... with17.8 v from the 100w Renogy Solar SuitcaseWe changed out all the lights in the rv to LED bulbsAfter having four - two bulb lights on for approx 1.5 hours last night the solar brought my battery back to 100% in about 15 minutes.Must admit that solar is a bit of a new experience... I have to say I'm impressed with this solar setup from Renogy.