For small 48 V systems with one or two strings of panels, such as a shed, pump or backup bank. A dependable, inexpensive Victron with the app and a five-year warranty.
Amazon $96.31 DRSA $93.50The Victron SmartSolar MPPT 100/20-48V rates 4.3 among MPPT solar charge controllers; the Victron Orion-Tr Smart 12/12-30 rates 3.6 among DC-DC ones. The Victron SmartSolar MPPT 100/20-48V costs $125.80 less ($93.50 vs $219.30).

For boats and vans that need an isolated charger from a brand with a long track record. Buyers who don’t need isolation get more current and efficiency from the Orion XS.
Amazon Northern Arizona Wind & Sun $219.30Prices were last checked October 24, 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 (MPPT solar and DC-DC), 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 | Victron SmartSolar MPPT 100/20-48V | Victron Orion-Tr Smart 12/12-30 |
|---|---|---|
| Overall rating | 4.3/5 | 3.6/5 |
| Value 35% | 71 $4.67 per amp of charge current | 61 $7.31 per amp of charge current |
| Features 25% | 77 Bluetooth app, lithium profile, temperature sensor; no temperature sensor | 80 Bluetooth app, lithium profile, smart-alternator support; no temperature sensor |
| Efficiency 20% | 75 98% peak efficiency (maker rating) | 0 87% peak efficiency (maker rating) |
| Warranty 20% | 100 5-year warranty | 100 5-year warranty |
Specifications
| Victron SmartSolar MPPT 100/20-48V | Victron Orion-Tr Smart 12/12-30 | |
|---|---|---|
| Charging | ||
| Type | MPPT solar charge controller | DC-DC charger |
| Charge current | 20 A | 30 A |
| Battery voltage | 12/24/36/48 V | 12 V |
| Lithium profile | Yes | Yes |
| Custom profile | Yes | Yes |
| Temperature sensor | Optional extra | No |
| Peak efficiency | 98% | 87% |
| Standby draw | 10 mA | 1 mA |
| Inputs | ||
| Max PV voltage (Voc) | 100 V | - |
| Max PV power (12 V) | 290 W | - |
| Max PV power (48 V) | 1,160 W | - |
| DC input range | - | 8 to 17 V |
| Isolated | - | Yes |
| Smart alternator | - | Yes |
| Ignition sensing | - | Yes |
| Monitoring and build | ||
| Bluetooth | Built in | Built in |
| Display | No | No |
| Load output | Yes | No |
| Parallel units | Yes | Yes |
| Cooling | passive (no fan) | - |
| Water resistance | IP43 (electronics), IP22 (connection area) | IP43 |
| Dimensions | 100 x 131 x 60 mm | 5.1 x 7.3 x 3.2 in |
| Weight | 1.4 lb | 4 lb |
| Warranty | 5 years | 5 years |
| Released | - | 2020-10 |