Solar Charge Controller Rover 40A 12V24V Auto Parameter DC Input MPPT Charge Controllers for Solar Panels Adjustable LCD for Gel Sealed Flooded Lithium Battery

The price you pay seemed high until you set it up and it just works. It took a few minutes to get the setup right but once it's done it does the job very well.

I replaced an old direct from China PWM converter with a Renogy Rover 20 amp for my camping solar rig. The improvement has been pretty remarkable. I'm really happy with the configuration, efficiency, and safety of this design. The efficiency gain going from PWM to MPPT is noticeable. More importantly for me, the ability to program the charging parameters from a laptop allowed me to use a custom lithium battery pack and get the target voltages exactly where I want them. I camp with a 70 Ah lithium pack built into a "suitcase" with the the Renogy Rover, fuse box, switches, inverter, etc. A big selector switch in the box lets me swap between my internal lithium and an external sealed lead acid batter for those times when the weather doesn't cooperate, and I need a little more juice. The Rover easily switches between "SLA" battery mode and my "USER" mode for the lithium. Best for me, the protection circuitry in the Rover shuts everything down long before voltages get anywhere near damaging my lithium if I forget to switch modes. The only knock I'd give on this controller is that the software to configure it is pretty rough around the edges. I had to reconnect and reboot frequently as it lost sync with the Rover, and the initial setup of the software isn't intuitive. Read the Fine Manual... The software is Windows only as well which is inconvenient for a Linux/Mac user. Still, after a bit of fiddling & testing (with a bench power supply standing in for solar panels over this LONG winter), it configured the Rover to the exact charging parameters I wanted for my lithium. All the settings are remembered when the controller is powered down. I'm ready to camp this summer!

I use this a couple times a year for the last 3 years with no complaints. Works great with a pair of 48V panels to charge a 200ah SLA AGM deep cycle battery without any issues. I previously had a smaller controller that the 48v panels fried, but this handles it great and the LED screen is nice too.

I bought this Renogy 60A MPPT charge controller on April 4, 2025, and after 11 months of use I’m very happy with it. It was a great upgrade from my old Tristar 45 PWM controller and has been noticeably more efficient. My old PWM controller struggled early in the morning, near sunset, and during cloudy weather. This Renogy starts charging much sooner and handles lower-light conditions far better. It keeps my battery voltage right where it should be. I bought the 60A model even though it was more than I needed at the time because I wanted room to expand my solar setup later. No regrets there. Right now I’m using it with a 140Ah 12V LiFePO4 battery and a 350W solar panel. Installation and setup were very easy, and the menus are clear and simple to use. I haven’t used every feature yet, like data logging, but based on my experience so far, this has been an excellent purchase.

This works well to charge LiFePO batteries - but you have to change the settings. The default "Li" (Lithium) setting doesn't do it. I don't know what logic it applies in the "Li" setting, but my LiFePO batteries went dead. Once dead, the controller would not apply any current to recharge them. I had to change the battery type to "USE". The "USE" setting allows you to set the battery charging parameters - Equalizing voltage (which you can't shut off, but doesn't apply to LiFePO batteries), Boost voltage, Floating charging voltage, over-discharge return voltage, Over-discharge voltage - to your LiFePO battery's specs. Once done, they charged very quickly and stayed that way. LiFePO batteries typically have a built-in BMS unlike Lithium Ion batteries. Also, the manual that comes with the unit is nowhere near as detailed as the one that you can download from here (or Renogy's site). What's included in the box is pretty much a quick-start guide that doesn't get into detailed settings.

Initially, I bought a Rover 30 for my solar panels back in 2022. It failed after 6 months. Renogy would not honor the warranty because they said the charge controller for my wind generator voided it, even though there was nothing in the warranty language that prohibited it. After 1.5 years with an unbranded hybrid MPPT that could take wind, I decided to take the wind offline, add two more panels. The Rover 40 seemed to make sense in that application. I hoped that this time the Renogy, which does well in converting high voltage low amp current from the panels to 24V/high amp charging current, would serve its purpose well. For the first couple weeks, it did very well. But now about once a day, I have to take off, reposition, and re-connect the battery cables. It work fine for a while, and then stop charging. Then I am running straight off the batteries until they run down. Seems the battery cables will not stay connected despite my best efforts. I've noticed in different reviews, others have also had issues with their terminals. One person complained that the screw stripped out, which suggests to me they were trying the get a good, lasting connection. I don't think this problem is unique to me. Since I am still within 30 days and since I had poor experience with their customer service previously, I'm not taking any chances. I've orderd a Vectron to replace this, and as soon as it arrives this thing is going back into the box and back to Amazon. No more Renogy products for me. I'm done with them.

Gran producto, lo recomiendo!

Awesome product! Works great, well made..happy camper!

This is the second unit I’ve bought. They are a great unit. And easy to run in parallel. They were handling 2500w easily. (With room for expansion)

Robusto ben fatto, completo di tutte le funzioni indispensabili per un mppt stand alone. Il dissipatore di calore è ben dimensionato e non necessita di ventole visti i rendimenti dichiarati dalla casa che credo siano corretti anche sulla base dei test che ho fatto. Inoltre il modello 20A gestisce potenze tutto sommato modeste ( 480w con batterie da 24v). Il display è a cristalli liquidi senza retroilluminazione con tutti i problemi dei cristalli liquidi. Di giorno e con vista frontale sono nitidi e chiari, con vista disallineato non si riescono a leggere. Non è che uno sta sempre lì a guardare il display, una volta impostato si controlla ogni tanto. Con l'app questi problemi non ci dovrebbero essere, però occorre comprare un ammennicolo wifi da aggiungere. La morsettiere fa il suo lavoro ma forse si poteva fare meglio. La programmazione è un po' macchinosa visto che si deve entrare nei vari menù, scorrerli fino al parametro di interesse, modificarlo e salvarlo. Vero che si fa una volta sola, ma è un po' noioso. Sul display di possono vedere tensioni e correnti gestire dall'apparecchio ma mancano statistiche più accurate, credo che sempre con app e ammennicolo il problema si risolva Cosi come la programmazione. Per me l'apparecchio va bene visto anche il costo di acquisto scontato ed è certamente completo per l'uso stand alone. Al prezzo di vendita pieno , senza sconti, si trovano apparecchi più completi con wifi app incluse.

I recently installed the Renogy Controller on my sailboat, and it has been performing flawlessly! The MPPT technology is highly efficient, maximizing the energy output from my solar panels, even in low-light conditions. The LCD display is clear and easy to navigate, providing all the information I need at a glance, including real-time system stats and charging status. I also appreciate the sturdy build quality and the numerous safety features, such as overcharging and short-circuit protection, which give me peace of mind. Overall, this charge controller is a fantastic choice for anyone looking to optimize their solar system. It’s reliable, easy to set up, and handles the load perfectly. Highly recommend it!