Victron Orion XS 12/12-50
#1 in DC-DCFull review
The best all-round alternator charger for most vans and RVs with a 12 V lithium bank. It is small, very efficient and fully configurable from a phone.
Amazon Inverters R Us $328.10$328.10
4.0/5
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.
- 50 ACharge current
- 12 VBattery
- 50 V maxPV input
- 97%Efficiency
- 2 yearsWarranty
Check price at Amazon$268.99
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Charges from the alternator and up to 660 W of solar at the same time
- Recharges a 100 Ah lithium battery in about 2 hours of driving or full sun
- Comes with a battery temperature sensor and works with smart alternators
- Fan-free and silent
- Also trickle-charges the starter battery from solar once the house battery is full
Cons
- Solar input tops out at 50 V, so panels have to be wired in parallel
- Bluetooth costs extra (BT-2 module)
- Not galvanically isolated
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | RBC50D1S |
|---|---|
| Charging | |
| Type | DC-DC charger with MPPT solar input |
| Charge current | 50 A |
| Battery voltage | 12 V |
| Lithium profile | Yes |
| Custom profile | Yes |
| Temperature sensor | Included |
| Peak efficiency | 97% |
| Standby draw | 30 mA |
| Inputs | |
| Max PV voltage (Voc) | 50 V |
| Max PV power (12 V) | 660 W |
| DC input range | 12 to 16 V |
| Isolated | No |
| Smart alternator | Yes |
| Ignition sensing | Yes |
| Monitoring and build | |
| Bluetooth | Optional add-on |
| Display | No |
| Load output | No |
| Cooling | passive (heat sink, no fan) |
| Dimensions | 9.61 x 5.75 x 3.78 in |
| Weight | 4.1 lb |
| Warranty | 2 years |
Alternatives in this type
Renogy DCC30S 30A DC-DC MPPT
#2 in DC-DCFull review
For smaller vans and truck campers with a 100 Ah battery and a panel or two on the roof. Bigger banks or arrays need the 50 A DCC50S.
Amazon $186.97$186.97
Renogy 12V 40A DC-DC Charger
#4 in DC-DCFull review
A cheap, quiet way to add alternator charging to a van or camper with a lithium house battery. Pay more for Victron if you want built-in Bluetooth.
Amazon $177.64$177.64
Compare
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