Description
The Victron SmartSolar MPPT 150 | 45 is a high-performance solar charge controller designed for medium to large off-grid systems. With support for 150V PV open-circuit voltage (Voc) and 45A charging output, it is ideal for RVs, trailers, vans, tiny homes, cabins, marine systems, overlanding builds, and mobile work trailers.
Victron’s Ultra-Fast MPPT tracking continuously adjusts for maximum solar harvest, especially during shading, cloud transitions, or varying temperatures. Integrated Bluetooth Smart provides real-time monitoring through the VictronConnect app, and VE.Direct offers system integration with other Victron devices.
Refer to the SmartSolar MPPT user manual you uploaded for wiring diagrams, fusing recommendations, cable sizing, battery configuration (including LiFePO₄), and advanced programming settings.
Solar Array Capability
The SmartSolar 150 | 45 supports high-voltage PV strings up to 150V, enabling efficient wiring and compatibility with RV panels, 24V modules, and residential solar panels.
Maximum Recommended Solar Array Size
| Battery Voltage | Max Charge Amps | Max Recommended Solar |
|---|---|---|
| 12V system | 45A | ≈ 650W |
| 24V system | 45A | ≈ 1,300W |
| 48V system | 45A | ≈ 2,600W |
The controller will safely limit current to 45A even when arrays are slightly oversized.
Engineering Solar Table (Vmp / Imp / Series Limits)
| Panel Type | Typical Vmp | Typical Imp | Max Panels in Series (150V limit) | Notes |
|---|---|---|---|---|
| 12V 100W panel | 18–19V | 5–6A | Up to 6S | Standard RV panels |
| 12V 200W panel | 18–20V | 9–10A | Up to 6S | May current-limit at 12V |
| 24V 200–250W panel | 34–38V | 6–8A | Up to 3S | Ideal for 24V charging |
| 24V 350–400W panel | 32–38V | 9–11A | Up to 3S | Popular for cabin / marine systems |
| 60-cell house panel | 30–33V | 8–9A | 3S (check cold Voc) | Great for off-grid homes & tiny houses |
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