Description
The Victron SmartSolar MPPT 100 | 20 is a high-efficiency solar charge controller designed for small to mid-sized off-grid systems. It is ideal for RVs, van conversions, travel trailers, overland vehicles, marine power systems, and small cabin installations. This controller supports PV voltages up to 100V and delivers 20A of charge current into 12V or 24V battery banks, including AGM, Gel, Flooded, and LiFePO₄.
Utilizing Victron’s Ultra-Fast Maximum Power Point Tracking (MPPT) technology, the 100|20 continuously scans and adjusts to the optimal operating point of the solar panels, improving energy harvest—especially during shading changes, cloudy conditions, or winter operation.
Built-in Bluetooth Smart allows easy setup, monitoring, and firmware updates via the VictronConnect app. The controller also includes VE.Direct communication, a programmable load output, configurable charge profiles, and robust electronic protections.
For detailed wiring diagrams, breaker sizing, battery configuration, and safety procedures, consult the SmartSolar MPPT user manual uploaded to your library.
☀️ SOLAR ARRAY CAPABILITY
This MPPT supports solar panel strings up to 100V Voc, making it compatible with both RV-style solar panels and high-voltage residential modules.
Solar wattage capability scales with battery voltage:
Maximum Recommended Solar Array Size
| Battery Voltage | Max Charge Amps | Max Recommended Solar (W) |
|---|---|---|
| 12V system | 20A | ≈ 290W |
| 24V system | 20A | ≈ 580W |
Oversizing the solar array slightly is acceptable—the controller will safely limit charging current to 20A.
📐 Solar Engineering Table (Vmp / Imp / Series Limits)
| Panel Type | Typical Vmp | Typical Imp | Max Panels in Series (100V max) | Notes |
|---|---|---|---|---|
| 12V 100W panel | ~18–19V | 5–6A | Up to 4S | Most common RV configuration |
| 12V 200W panel | ~18–20V | 9–10A | Up to 4S | Will current-limit on 12V |
| 24V 200–250W panel | ~34–38V | 6–8A | 2S max | Ideal for 24V systems |
| 24V 350–400W panel | ~32–38V | 9–11A | 2S max | Best for efficient harvest |
| 60-cell house panel | 30–33V | 8–9A | 3S possible (check cold Voc) | Great for tiny homes/cabins |
Typical customer setups include:
- 2 × 100W panels (200W) – common on vans
- 1 × 200W panel – compact RV installs
- 2 × 200W panels (400W) – maxes out 12V performance
- 1 × 400W residential panel – ideal for 24V
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