From the brand
- ใInnovative MPPT DesignใDie-cast aluminium design ensuring excellent heat dissipation and Renogy Maximum Power Point Tracking technology with a high tracking efficiency of up to 99% and peak conversion efficiency of 98% It is the best charging solution even in cloudy environments where the max power point of the solar panels will fluctuate all day
- ใ12V/24V Automatically DetectใAutomatically detects 12V or 24V DC system voltages (for Non-Lithium battery types), and the LCD screen and multiple LED indicators display the solar charging and battery operation information, customizable parameters, and error codes
- ใFull System ProtectionใMeant to safeguard your system, the self-diagnostic capability can assess and protect against reverse polarity, battery overcharging, battery over-discharging, overload, short-circuiting, and reverse current
- ใ4-Stage Safely ChargingใFeatures 4-stage charging (Bulk, Absorption, Float, and Equalization) of Lead Acid Batteries and 2-stage charging (Bulk and Absorption) for Lithiuim batteries as well as Lithium Reactivation
- ใDiverse Load Controlใ Connect DC appliances directly to the optional Load Terminals and monitor consumption or set up timer controls directly from the controller
Product Description


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How should I wire my panels with an MPPT charge controller?
The panels can be wired either in series or parallel or a combination of series/parallel.
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What is the max wattage input on the Rover 40?
The Renogy Rover 40A MPPT Solar Charge Controller can accept input of up to 520W for a 12V system, and up to 1040W for a 24V system.
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Does the Rover 40A MPPT charge controller have a built-in 40A fuse for the rated 40A load output?
No. Please always add a fuse between the charge controller and batteries. To determine the fuse size, you can match it to the amperage rating of the charge controller. If you have one of our 40A charge controllers, we recommend using a 40A ANL fuse.
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What are the advantages of Renogy MPPT technology?
Renogy Rover Series solar charge controllers use Power Catcher MPPT algorithm to always ensure the charge controller converts most energy by locking to the most optimal maximum power point.
| Nominal System Voltage: | 12/24V Auto-Detect |
| Max. PV Input Voltage: | 100 VDC |
| Rated Charge Current: | 40A |
| Power Consumption: | ๏ผ100mA/12V; ๏ผ58mA/24V |
| Max Battery Voltage: | 32V |
| Ground Type: | Negative |
| Electrical Protection: | Overcharging, over-discharging, overload, and short circuit. Capable of charging over-discharged lithium batteries. |
| Protection Level: | IP32 |
| Operating Temperature Range: | -35ยฐC to 45ยฐC; -31ยฐF to 113ยฐF |
| Storage Temperature Range: | -35ยฐC to 75ยฐC; -31ยฐF to 167ยฐF |
| Operating / Storage Humidity: | โค 90%, No Condensation |
| Temperature Compensation: | -3mV/ยฐC/2V |
| Dimensions&: | 238 x 172 x 77 mm;9.38 x 6.78 x 3.05 in & 2.0kg / 4.41 lb |
| Max. Terminals Size: | 8 AWG 10mm2 |
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James K. –
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 donโt really tax the system very much. Plenty of reserve for a night on the hook.
Joe B. –
Works well at charging and monitoring my 4×100 watt panels with 2×100 ah batteries.
Francine –
Brother likes it.
Tag Bunny –
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.
GregH –
Great replacement for the PWM controller that came with our Renogy Solar kit. Initially we had the Renogy PWM 30 AMP controller and it was an entry level controller in all respects. The previous controller was limited to a 12 volt battery source had 2 lead pairs, one for solar panel connection and the other for the battery side connection. Any load connected to the battery array had to be connected directly to the batteries and was not governed by the controller. Also you had to rely on LED indicator lights To determine when the controller was in charge mode versus float mode. Adequate for an entry level controller but not great. Now lets talk about this controller.First, this controller is capable of 12 or 24 volt wiring installations. 24 volt DC is superior to 12 volt DC because it cuts the Amperage draw in half on the DC end. A 1.2 Amp TV running on AC/120 volts will require 12 Amps on the 12v-DC end to meet the same 140 Watt requirement. A 24 volt DC setup will reduce the amperage requirement down to 6 amps on DC, which means your DC wiring gauge doesnโt have to be as robust when supporting a 24 volt application.Secondly, the LCD display is great and is a must for a solar charge controller. Itโs not enough to know that the solar cells are charging the battery, you may also want to know how โfastโ they are charging the battery and whether or not the panels should be angled to reach optimized charge rate. The LCD screen also provides a percentage estimate of battery remaining in addition to the amps that are being supplied by the panels, along with a running amp-hour accumulation of charge provided the panels over a period of time and current battery voltage.Third, it has a pair of positive/negative load leads that permit connecting appliance loads up to 20 Amps DC. Itโs not necessary to use the load leads for connecting the devices that run off the battery, but the added advantage of using them is that your battery array is protected from over-consumption, as the leads shut off usage on the battery once it reaches a certain level of discharge in order to protect the battery array.Iโve only used the new controller once, but the instructions were easy to follow and I made a laminated copy of the LED and Menu options as a quick reference guide that will go along with the kit on camping trips. Currently the array powers my 400 Watt (4x100W) kit and 2 VMAX 125ah batteries wired in parallel, but I am seriously thinking of doubling the panel array and adding 2 more batteries in a series/parallel configuration to take advantage of the 24 volt capabilities of this controller.Quick Note on the 100 Watt Renogy panels:When I measured the charge current of the 4 x 100 watt panels connected in Parallel I noted an 18.5 amp charge rate on the new controller or ~4.6 amps per panel. That seemed low to me given that 400 watts/12v is around 33.3 amps, or 8.33 amps per panel. In discussions with Renogy support I found out that the 100 Watts is calculated at 17.9 volts * 5.7 amps, where they use the maximum charge voltage by each of the panels as basis for the calculation. Just something to be aware of when you are reading sub-5 amps per panel charge rate on your controller.This new controller works as advertised, was relatively inexpensive for what it does, and I may update the review again in 12 months after running it a few more times for a consistency check.
Atlatl Media –
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.
Ingrid 2000 –
Funktioniert top.
Habe schon den kleinen Bruder 20ah einige Jahre genutzt lรคuft zuverlรคssig ! Klare Kaufempfehlung wer sich das bt 1 bluetooth modul kauft sollte beim anmelden mit der App das gps am Handy anschalten sonst keine Verbindung!!!!!!! Das BT 2 Modul passt nicht das hat einen anderen Stecker!
Leonid W. –
Simple to use and accuret
This controller is awsome. LOTS of info up on the screen telling you where and how much energy is being used and how much is coming in. Even has a temperture reader. The mounting brakets are super useful aswell. No issues yet after 2 weeks of use
micheal –
Regulator
Working well
JL –
Funktioal
Habe mit dem Laderegler eine Inselanlage aufgebaut. Zwei 400W-PV-Module, zwei Flamm-Fit 150 Akkus und ein 2kW-Wechselrichter stellen die autarke Stromversorgung im Gartenhaus sicher.
Francisco P. –
Sn duda
Sin ninguna duda dentro de su rango el mejor