The value pick for vans and campers that want alternator and solar charging in one box. It costs well under half as much as a Redarc dual-input unit for more current.
Amazon $268.99The Renogy DCC50S 50A DC-DC MPPT rates 4.0 among DC-DC charge controllers; the Renogy Rover 40A rates 4.0 among MPPT solar ones. The Renogy Rover 40A costs $109 less ($159.99 vs $268.99).

A popular 40 A controller for 12/24 V RV and cabin systems with up to about 520 W of panels. Budget for the BT-2 module if you want app monitoring.
Amazon $159.99Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different type classes (DC-DC and MPPT solar), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Renogy DCC50S 50A DC-DC MPPT | Renogy Rover 40A |
|---|---|---|
| Overall rating | 4.0/5 | 4.0/5 |
| Value 35% | 78 $5.38 per amp of charge current | 80 $4 per amp of charge current |
| Features 25% | 82 Bluetooth add-on, lithium profile, temperature sensor, smart-alternator support | 69 Bluetooth add-on, lithium profile, temperature sensor; 100 V PV limit |
| Efficiency 20% | 88 97% peak efficiency (maker rating) | 75 98% peak efficiency (maker rating) |
| Warranty 20% | 25 2-year warranty | 50 3-year warranty |
Specifications
| Renogy DCC50S 50A DC-DC MPPT | Renogy Rover 40A | |
|---|---|---|
| Charging | ||
| Type | DC-DC charger with MPPT solar input | MPPT solar charge controller |
| Charge current | 50 A | 40 A |
| Battery voltage | 12 V | 12/24 V |
| Lithium profile | Yes | Yes |
| Custom profile | Yes | - |
| Temperature sensor | Included | Included |
| Peak efficiency | 97% | 98% |
| Standby draw | 30 mA | 100 mA |
| Inputs | ||
| Max PV voltage (Voc) | 50 V | 100 V |
| Max PV power (12 V) | 660 W | 520 W |
| DC input range | 12 to 16 V | - |
| Isolated | No | - |
| Smart alternator | Yes | - |
| Ignition sensing | Yes | - |
| Monitoring and build | ||
| Bluetooth | Optional add-on | Optional add-on |
| Display | No | Yes |
| Load output | No | - |
| Cooling | passive (heat sink, no fan) | - |
| Water resistance | - | IP32 |
| Dimensions | 9.61 x 5.75 x 3.78 in | 9.38 x 6.78 x 3.05 in |
| Weight | 4.1 lb | - |
| Warranty | 2 years | 3 years |