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

So unbelievably user friendly! Easy installation and works perfectly. I am a solar novice and this was super easy.

I use this with a 300W folding panel on a 100' cord to help charge my batteries on my RV. When in direct sun I get a 20A charging rate so the batteries charge up fairly fast, I like the app BT connection for changing from flooded wet cell to gel or lithium batteries and monitoring the charge rate and battery state. Used it on one long and several short trips and it works great as a backup to my rooftop solar or supplemental charging source, and as it folds flat and has built in leg stands it is east to store in my pass-thru compartment.

Excellent MPPT charging system. Keeps our batteries at top level. Easy to set up and use.

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.

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.

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.

Works as described & good quality!

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!

I bought this unit as a somewhat temporary backup for my main charge controller. The CC was easy to set up, the connection terminals have nice long tunnels to help remove stress on the exposed wire ends. So far the unit seems to be working well, and I appreciate the information available on the built in screen - such as daily kWh charge to batteries, as well as daily average charge information. Two concerns/gripes: 1) I'm not sure if this was a mistake, but my charge controller arrived with ZERO paperwork. Nothing at all, note even a card pointing you to their website. As this product is likely being installed in some locations where reliable internet access isn't a given, and that it is a device that controls so much power (therefore danger), I am very surprised that there is no literature included. By contrast my products from other established solar energy manufacturers comes with ample written support. 2) the device comes with a password set to ON by default, and you cannot change any parameters (even as fundamental as battery type) without this password. What is that password? Who knows... internet searches brought up nothing --- the password is 000000. I finally figured this out... I hope this saves somebody the same hassle I went through.