The short version: Renogy makes two kinds of charge controller. The PWM ones (Wanderer, Adventurer, Voyager) are cheap and fine for a small 12V array. The MPPT ones (the Rover family) harvest more from the same panels and are the right call from about 200W up, or any time your panels are wired in series. Pick by array size and where the controller will live: under ~130W, a Wanderer 10A; a small kit you may grow, a Wanderer Li 30A; set into a wall, the Adventurer Li 30A; somewhere wet, the Voyager 20A; 200W and up, a Rover sized to the array.
Renogy sells more charge controllers than most RV owners need to compare, and the names do not tell you much. This guide sorts the range the way you actually choose: first PWM or MPPT, then how big your array is, then where the controller has to live. Every controller below is one we stock.
First decision: PWM or MPPT
A PWM controller connects the panel to the battery and pulls the panel down to battery voltage. That works, but a 12V-nominal panel produces its best power at around 18–20V, so the difference is thrown away as heat. An MPPT controller converts that extra voltage into extra charging current, which is why it harvests more from the same roof, especially in cold weather, when panel voltage rises. MPPT also lets you wire panels in series, which means thinner cable on long runs.
The practical rule: on a small 12V array of one or two panels wired in parallel, PWM is good value. Once you are past about 200W, or you want series wiring, the extra harvest pays for the MPPT. For the full explanation, see our MPPT vs PWM guide.
Renogy's PWM controllers
| Controller | Rated current | Best for |
|---|---|---|
| Wanderer 10A | 10A (up to 130W at 12V, 260W at 24V) | A single small panel: battery maintenance on a stored trailer, a boat, a gate opener |
| Wanderer Li 30A | 30A, optimised for 12V including lithium | A first 100–200W kit; Renogy's 100W starter kit ships with it and is rated to expand to 400W |
| Adventurer Li 30A | 30A, 12V or 24V, 50V max PV input | Flush mounting into an RV wall for a finished look; programmable lithium charging |
| Voyager 20A | 20A, IP67 waterproof | A spray-exposed bay, tongue box or boat locker where a standard controller will not last |
One caution on the Voyager: it is a common-positive-ground controller. Most RV 12V systems are negative-ground to the chassis, so check your wiring or ask us before you install one into an existing RV system.
Renogy's MPPT controllers (the Rover family)
| Controller | Rated current / system | Best for |
|---|---|---|
| Rover 2 20A Compact | 20A, 12V/24V, Bluetooth built in | Vans, teardrops and small trailers where cabinet space is tight |
| Rover Li 20A / 30A / 40A | 20, 30 or 40A, 12V/24V | The workhorse for 200–500W RV roofs; optional BT-2 Bluetooth |
| Rover Lite 60A | 60A, 12V–48V | A big roof on a budget |
| Rover 60A | 60A, 12V–48V, up to 800W at 12V, 140V max PV input | Full-size RVs and fifth wheels running 600–800W |
| Rover 100A | 100A, 12V–48V, up to 1,300W at 12V, 150V max PV input | The largest RV and cabin arrays; two can run in parallel for 200A |
| REGO 30A | 30A, 12V/24V/36V/48V | A build you expect to move to a higher-voltage bank later |
Sizing it to your array
At 12V, divide the array watts by about 13 to get the charging current, then pick the next controller up. These are the steps we use in our RV solar calculator:
- Up to ~130W: Wanderer 10A
- Up to ~260W: Rover Li 20A (or a Wanderer Li 30A if budget comes first)
- Up to ~400W: Rover Li 30A
- Up to ~520W: Rover Li 40A
- Up to ~800W: Rover 60A or Rover Lite 60A
- Up to ~1,300W: Rover 100A
Leave headroom if you plan to add panels. Swapping a controller later costs more than buying one size up now.
Lithium batteries
Every controller above can charge LiFePO4; the thing to get right is the charging profile, which you set on the controller or in the app. The Rover Li controllers can also send a small current into a lithium battery whose BMS has shut it off at zero volts, which can recover a bank that would otherwise need a separate charger. If your battery lives somewhere that drops below freezing, pair it with a self-heating battery such as the Renogy Rego 104Ah, because lithium must not be charged below 32°F.
The parts people forget
- Panel-to-controller cable: the adaptor kit comes in 9 in, 10 ft, 20 ft and 30 ft. The 30 ft version steps up to 10AWG to limit voltage drop.
- Parallel connectors for two panels (branch adapter pair) or up to four (4-to-1 branch connectors).
- A fuse or breaker between controller and battery, such as a thermal circuit breaker sized to the controller.
- Monitoring. A controller reports what the panels make; only a battery monitor with a shunt tells you what is actually left in the battery.
FAQ
Can I use a Renogy controller with a non-Renogy battery?
Yes. Set the correct battery type and voltages and a Renogy controller will charge any 12V lead-acid or LiFePO4 battery, including Victron, Battle Born or Eco-Worthy.
What is the difference between the Wanderer and the Wanderer Li?
The Wanderer Li 30A is the larger, lithium-optimised model, with an RS232 port for Bluetooth monitoring through the BT-1 module. The Wanderer 10A is a compact controller for a single small panel.
Do I need Bluetooth?
Not to charge the battery, but it is the easiest way to confirm the system is working and to change settings. The Rover 2 has it built in; most other models take a plug-in BT-1 or BT-2 module.
Renogy or Victron?
We sell both. Victron's SmartSolar controllers are more refined and join one monitored system; Renogy's cost less and are the usual first-system choice. Our Victron vs Renogy comparison covers the trade-offs.
Ready to choose? Run your numbers through the RV solar & battery calculator. It sizes the controller, battery and array and gives you a Renogy parts list you can add to your cart in one click. Or browse all Renogy.