Victron SmartSolar MPPT 150/45
#3 in MPPT solarFull review
For 48 V cabin and backup systems of around 2.5 kW of panels that want Victron’s app in a small case. Among the best value per amp in the SmartSolar range.
Amazon DRSA $229.50$229.50
The Victron SmartSolar MPPT 150/45 is the better charge controller overall, rated 4.3 to 4.0. The Victron SmartSolar MPPT 150/45 leads on warranty and features. The BougeRV Sunflow 40A wins on value and efficiency. The BougeRV Sunflow 40A costs $89.51 less ($139.99 vs $229.50).
BougeRV Sunflow 40A
#18 in MPPT solarFull review
A low-cost 40 A controller with app monitoring built in, for 12/24 V van and RV systems up to about 600 W.
Amazon $139.99$139.99
Prices 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.
Which should you buy?
- Choose the Victron SmartSolar MPPT 150/45 for warranty (5-year warranty vs 1.5-year warranty) and features (Bluetooth app, lithium profile, temperature sensor, 150 V PV input; no temperature sensor vs Bluetooth app, lithium profile, temperature sensor; 95 V PV limit).
- Choose the BougeRV Sunflow 40A for value ($3.50 per amp of charge current vs $5.10 per amp of charge current) and efficiency (99% peak efficiency (maker rating) vs 98% peak efficiency (maker rating)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every MPPT solar charge controller; a clear win is highlighted. How we rank explains each one.
| Factor weight | Victron SmartSolar MPPT 150/45 | BougeRV Sunflow 40A |
|---|---|---|
| Overall rating | 4.3/5 | 4.0/5 |
| Value 35% | 65 $5.10 per amp of charge current | 87 $3.50 per amp of charge current |
| Features 25% | 90 Bluetooth app, lithium profile, temperature sensor, 150 V PV input; no temperature sensor | 75 Bluetooth app, lithium profile, temperature sensor; 95 V PV limit |
| Efficiency 20% | 75 98% peak efficiency (maker rating) | 100 99% peak efficiency (maker rating) |
| Warranty 20% | 100 5-year warranty | 12 1.5-year warranty |
Specifications
| Victron SmartSolar MPPT 150/45 | BougeRV Sunflow 40A | |
|---|---|---|
| Charging | ||
| Type | MPPT solar charge controller | MPPT solar charge controller |
| Charge current | 45 A | 40 A |
| Battery voltage | 12/24/36/48 V | 12/24 V |
| Lithium profile | Yes | Yes |
| Custom profile | Yes | Yes |
| Temperature sensor | Optional extra | - |
| Peak efficiency | 98% | 99% |
| Standby draw | 20 mA | - |
| Inputs | ||
| Max PV voltage (Voc) | 150 V | 95 V |
| Max PV power (12 V) | 650 W | 600 W |
| Max PV power (48 V) | 2,600 W | - |
| Monitoring and build | ||
| Bluetooth | Built in | Built in |
| Display | No | Yes |
| Load output | No | Yes |
| Parallel units | Yes | - |
| Cooling | passive (no fan) | passive |
| Water resistance | IP43 (electronics), IP22 (connection area) | - |
| Dimensions | 130 x 186 x 70 mm | - |
| Weight | 2.8 lb | - |
| Warranty | 5 years | 1.5 years |
| Released | - | 2023-10 |