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
The Victron Orion XS 12/12-50 is the better charge controller overall, rated 4.5 to 3.5. The Victron Orion XS 12/12-50 leads on warranty and features. The Sterling Pro Batt Ultra BB1260 wins on value. The Sterling Pro Batt Ultra BB1260 costs $9.35 less ($318.75 vs $328.10).
Sterling Pro Batt Ultra BB1260
#7 in DC-DCFull review
For boats and big RV banks that need lots of alternator current and fine control over charge voltages. Van builders short on space will find the Orion XS smaller and easier.
Amazon $318.75$318.75
Prices 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.
Which should you buy?
- Choose the Victron Orion XS 12/12-50 for warranty (5-year warranty vs 2-year warranty) and features (Bluetooth app, lithium profile, temperature sensor, smart-alternator support; no temperature sensor vs lithium profile, temperature sensor, smart-alternator support; no Bluetooth).
- Choose the Sterling Pro Batt Ultra BB1260 for value ($5.31 per amp of charge current vs $6.56 per amp of charge current).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every DC-DC charge controller; a clear win is highlighted. How we rank explains each one.
| Factor weight | Victron Orion XS 12/12-50 | Sterling Pro Batt Ultra BB1260 |
|---|---|---|
| Overall rating | 4.5/5 | 3.5/5 |
| Value 35% | 68 $6.56 per amp of charge current | 79 $5.31 per amp of charge current |
| Features 25% | 90 Bluetooth app, lithium profile, temperature sensor, smart-alternator support; no temperature sensor | 55 lithium profile, temperature sensor, smart-alternator support; no Bluetooth |
| Efficiency 20% | 100 98.5% peak efficiency (maker rating) | 50 efficiency not published (neutral score used) |
| Warranty 20% | 100 5-year warranty | 25 2-year warranty |
Specifications
| Victron Orion XS 12/12-50 | Sterling Pro Batt Ultra BB1260 | |
|---|---|---|
| Charging | ||
| Type | DC-DC charger | DC-DC charger |
| Charge current | 50 A | 60 A |
| Battery voltage | 12 V | 12 V |
| Lithium profile | Yes | Yes |
| Custom profile | Yes | Yes |
| Temperature sensor | Optional extra | Optional extra |
| Peak efficiency | 98.5% | - |
| Standby draw | 1.5 mA | 1 mA |
| Inputs | ||
| DC input range | 9 to 17 V | 11 to 20 V |
| Isolated | No | - |
| Smart alternator | Yes | Yes |
| Ignition sensing | Yes | Yes |
| Monitoring and build | ||
| Bluetooth | Built in | No |
| Display | No | - |
| Load output | No | No |
| Parallel units | Yes | - |
| Cooling | - | fan |
| Water resistance | IP65 | IP21 |
| Dimensions | 5.4 x 4.85 x 1.6 in | 190 x 160 x 70 mm |
| Weight | 0.7 lb | 3.1 lb |
| Warranty | 5 years | 2 years |