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Model # RNG-CTRL-RVR40

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Questions and Answers for Renogy Rover 40 Amp 12V/24V DC Input MPPT Solar Charge Controller Auto Parameter Adjustable LCD Display

  • Automatically detects 12-Volt or 24-Volt DC system voltages
  • Compatible with various deep cycle battery options
  • Protects overcharge, over-discharge, overload and short circuit

Questions & Answers

Can this charge controller work with Lithium ion batteries? Quick Background: My battery is a "3S" configuration utilizing standard 18650 Li Ion cells. That delivers 3 * 3.7V = 11.1V nominal, but with typical range of 9.0V (low) to 12.6V (fully charged). I am interested in this controller, but it must be able to deal with Lithium Ion batteries, not just the usual AGM, Deep cycle, etc. Thanks for the advice. -MR
ByDec 22, 2018
2 Answers | 
Answer This Question

Yes, the Rover 40 is capable of charging Li batteries and does have a preset Li setting. This Li setting is preset for a max boost charge of 14.4v though so if your Li battery does not require that much of a charge you may want to set the controller to the USER setting to change the voltage parameters to your battery.

By|Mar 3, 2025

(1)

According to Renogy , Yes.

By|Jul 17, 2019


    Can I hook up 24v solar panels to this to manage a 12v battery bank?
    ByOct 3, 2018
    3 Answers | 
    Answer This Question

    Hello Don, Thank you for reaching out to us and your question. Please be aware that the 40-amp controller is rated at a 100-Volt D/C input. As long as you do not exceed 520-watts you may connect a solar panel with a 24-volt output and charge a 12-volt battery bank. Please contact us if you have any other questions or concerns, have a wonderful day!

    By|May 11, 2022

      (2)

      I believe the answer is yes. I have four 100w panels connected to mine. I have them in two x two configuration. This means two 100w in series, making it a 24v x 100w unit. Two of these hooked together in parallel make the whole unit 200w x 24v. I have had no problems with this setting and the MPPT controller. By the way I have 2 deep cycle marine batteries connected to the end of this system in parallel. Hope this helps. Of course you can always just call Renogy and ask, they are very helpful people

      By|May 6, 2023

      Hello Don, Thank you for reaching out to us and your interest in Renogy. As long as you do not exceed 100-Volts D/C or 520-watts you may connect a higher output solar panel and charge a 12-volt battery bank. Please contact us if you have any other questions or concerns have a wonderful day.

      By|May 6, 2023


      What is the maximum watts it can handle?
      BySep 5, 2018
      4 Answers | 
      Answer This Question

      Hello Ted, Thank you for reaching out to us and your interest in Renogy. The Renogy 40-Amp Rover can accept a maximum solar input of 520-Watts with a 12-Volt battery bank. Please contact us if you have any additional questions, have a wonderful day!

      By|May 6, 2023

        In a 12 volt system 520 watts. In a 24 volt system 1040 watts.

        By|May 6, 2023

          For information I have copied this from the Renogy Manual Max. Solar Input Power Model RVR-20 12V @ 260W 24V @ 520W Model RVR-30 12V @ 400W 24V @ 800W Model RVR-40 12V @ 520W 24V @ 1040W Hope this helps. If you have any more questions call Renogy they are very helpful people.

          By|Jul 6, 2020

          (2)

          I would be glad to assist you here! The maximum PV solar input this controller can handle is 520 watts at 12v. However if you wish to use a 24v battery bank, it can handle up to 1040 watts at 24v. I hope this helps answer your question! Best regards, ~Tylor Renogy technical support department

          By|Jul 6, 2020

          (1)

          In what temp range will this controller work? Is it suitable for outdoor use under a roof, but where blown rain/snow may be present?
          ByAug 31, 2017
          3 Answers | 
          Answer This Question

          This unit is not intended for outdoor use.

          By|Sep 4, 2019

            -35 c to +45 c. It is intended for inside use only.

            By|Sep 4, 2019

              (1)

              Hello, The working temperature range for this controller is -35°C to +45°C. It is designed to be indoors, rain will permanently damage the unit.

              By|Sep 4, 2019

                (3)

                What will happen if more solar wattage is provided than the controller can utilize? If I connect two panels to this controller with a maximum output power of 300 watt. That would be 36V @ 16.67A. The panels will be mounted flat on a roof, so it is unlikely that they will ever produce maximum rated output. But if it ever happens, what will the controller do. Will it limit the output to 40A @ 12V (480W) and waste the other 120W? To me this is acceptable since I doubt it will ever happen. Or will it try to deliver 50A @ 12V (600W) and damage the controller? This would not be acceptable.
                ByAug 24, 2017
                2 Answers | 
                Answer This Question

                It limits the current.

                By|May 6, 2023

                  Hello, The controller will limit the output to 40A and the excess wattage will be dissipated as heat. Overloading the controller will not damage it. Please let us know if you have any further questions or need anything else!

                  By|Dec 28, 2018

                    (4)

                    is a temperature sensor included with this unit
                    ByMay 7, 2017
                    5 Answers | 
                    Answer This Question

                    Yes a battery temp sensor is included

                    By|May 5, 2023

                      Yes it is included.

                      By|May 6, 2023

                        No, the sensor cable is included but not the sensor.

                        By|Jun 25, 2019

                        Yes a battery temp sensor is included.

                        By|May 5, 2023

                          Hello Steve, The MPPT Rover does come with an included temperature sensor. Please contact us at 800-330-8678, if you have any additional questions, have a great day!

                          By|Jun 10, 2020

                            (3)