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Front view of the Victron SmartSolar MPPT 250/70 MC4 charge controller with MC4 solar input connectors
Angled view of the Victron SmartSolar MPPT 250/70 MC4 charge controller showing battery terminals, MC4 connectors, and heatsink
Smartphone displaying the VictronConnect app showing MPPT 100/50 solar charger status with voltage, current, and power readings
Smartphone displaying the VictronConnect app showing MPPT 100/50 solar charger status with voltage, current, and power readings
Front view of the Victron SmartSolar MPPT 250/70 MC4 charge controller with MC4 solar input connectors
Angled view of the Victron SmartSolar MPPT 250/70 MC4 charge controller showing battery terminals, MC4 connectors, and heatsink
Smartphone displaying the VictronConnect app showing MPPT 100/50 solar charger status with voltage, current, and power readings
Smartphone displaying the VictronConnect app showing MPPT 100/50 solar charger status with voltage, current, and power readings

Victron SmartSolar MPPT 250 | 70 – MC4

$511.85

The Victron SmartSolar MPPT 250 | 70 MC4 is a 70A high-voltage MPPT controller featuring factory-installed MC4 connectors, supporting up to 250V PV input for efficient high-voltage solar array wiring. Ideal for cabins, vans, RVs, marine systems, and off-grid homes using residential solar panels.
Refer to the SmartSolar MPPT manual for wiring, fusing, and configuration guidance.

Solar Input by Battery Voltage

Battery Voltage Max Solar (W)
12V ≈ 1,000W
24V ≈ 2,000W
48V ≈ 4,000W
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Description

The Victron SmartSolar MPPT 250 | 70 MC4 is a high-voltage, high-efficiency MPPT controller designed for medium and large off-grid solar systems. Featuring factory-installed MC4 connectors, this model provides faster installation, safer PV terminations, and compatibility with modern solar wiring standards.

Supporting up to 250V PV open-circuit voltage and delivering 70A of charging current, this controller is ideal for RV and van systems using large residential panels, marine installations, tiny homes, cabins, and mobile commercial solar power systems.

Victron’s Ultra-Fast MPPT tracking enhances energy harvest even in low-light, partial shade, or rapidly changing conditions. With built-in Bluetooth Smart, users can monitor and configure the system using VictronConnect. VE.Direct provides full integration with Cerbo GX and other Victron monitoring systems.

Use the SmartSolar MPPT user manual you uploaded for wiring diagrams, lithium battery setup, fusing, breaker sizing, and high-voltage PV array design.

Solar Array Capability

The MPPT 250 | 70 MC4 supports long, high-voltage strings up to 250V, ideal for residential and commercial solar panels.

Maximum Recommended Solar Array Size

Battery Voltage Max Charge Amps Max Recommended Solar
12V system 70A ≈ 1,000W
24V system 70A ≈ 2,000W
48V system 70A ≈ 4,000W

Oversized arrays are safe—the controller limits charging to 70A.

Engineering Solar Table (Vmp / Imp / Series Limits)

Panel Type Vmp Range Imp Range Max Panels in Series (250V limit) Notes
60-cell residential panel 30–33V 8–9A Up to 7S Most common for off-grid homes
72-cell residential panel 37–39V 8–10A Up to 6S Excellent for 48V systems
144-half-cut module 38–41V 10–13A Up to 6S High-yield modern PV modules
24V 350–450W module 32–38V 9–11A Up to 7S Perfect for tiny homes / cabins
12V RV 100W module 18–19V 5–6A Up to 13S Not ideal—low current relative to capacity

This MC4 version is optimized specifically for modern residential/commercial modules, not legacy RV panels.

Additional information

Model

SmartSolar MPPT 250/70 MC4
Dimensions (inches)

L: 7.28 in, W: 9.00 in, H: 3.74 in
Dimensions (millimeters)

L: 185 mm, W: 230 mm, H: 95 mm
Weight

4.4 lbs, 2.0 kg
Battery Voltage Compatibility

12V, 24V, 48V
Max PV Open Circuit Voltage (Voc)

250V
Rated Charge Current

70A
Max Recommended Solar Input

1000W @ 12V, 2000W @ 24V, 4000W @ 48V
PV Input Type

MC4 connectors (high-voltage rated)
Supported Battery Types

AGM, Gel, Flooded Lead Acid, LiFePO₄ (Lithium)
Communication Ports

Bluetooth Smart, VE.Direct
Protection Features

PV reverse polarity, Battery reverse polarity, Overtemperature, Overcurrent, PV short circuit, Electronic load protection
Cooling Type

Passive convection (large aluminum heatsink)
Enclosure Rating

IP43 (electronics), IP22 (terminals)
Mounting Options

Wall mount, Panel mount, Cabinet mount
Typical Applications

Off-grid cabins, RV solar, Vans, Marine systems, Tiny homes, Telecom power systems, Solar utility trailers
Warranty

5-Year Manufacturer Warranty

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