Victron Energy SmartSolar MPPT Solar Charge Controller 45A 150V — 12/24/36/48V, Bluetooth Monitoring

The Victron Energy SmartSolar MPPT charge controller (150V, 45A) converts solar panel output into optimized charging power for 12/24/36/48V battery systems while offering app connectivity and synchronized multi-controller operation.

Designed for small to medium off-grid and backup systems, the SmartSolar MPPT 150V 45A combines fast maximum power point tracking with configurable charging stages and intelligent load control. It supports high open-circuit panel voltages up to 150V, automatic battery charging profiles, and the VictronConnect app for monitoring and setup. The controller is suitable for lead‑acid and lithium battery banks when configured correctly.

How does this MPPT controller improve solar harvest in mixed light?

The unit uses a high-speed MPPT algorithm to find the optimal operating point of the solar array, reducing energy loss when clouds pass or when panels are partially shaded. It continuously adjusts voltage and current to maximize power extraction from the panels.

• Fast MPPT tracking minimizes time away from peak power point.
• Handles up to 150V open-circuit panel voltage for larger array layouts.
• Maintains output under partial shading better than PWM controllers.

What connectivity and monitoring features are available?

VictronConnect provides Bluetooth access to live readouts, 30-day performance history, and full configuration of charging stages and alarms. Firmware updates and device presets are also delivered through the app for straightforward system management.

• Bluetooth monitoring with VictronConnect app on mobile devices.
• View real-time voltage, current, and energy statistics.
• Configure battery type, charge voltages, and load disconnect thresholds.

Can multiple SmartSolar units work together and why would I do that?

Yes—multiple SmartSolar MPPT controllers can synchronize their charging cycles so the array behaves like a coordinated system. This ensures balanced charging across a shared battery and can increase overall available charging current for larger systems.

• Synchronized charging stages for consistent battery management.
• Scales system capacity by adding additional controllers in parallel.
• Reduces thermal and electrical stress on a single controller by spreading load.

How can the load output be used safely in a system?

The SmartSolar includes an intelligent load output that lets you power DC loads directly and set a safe disconnect voltage to protect the battery. The controller will automatically cut load power if battery voltage falls below the configured threshold, preventing deep discharge.

• Programmable low-voltage disconnect protects battery life.
• Directly power lights, pumps, or small appliances from the controller.
• Set automatic reconnection and alarms through the app.

Who this product is for: installers, RV and van converters, boat owners, and homeowners building off-grid or backup solar systems who need a reliable MPPT controller with high input voltage tolerance, Bluetooth monitoring, and the ability to scale by adding multiple controllers. It is best chosen when you require efficient power extraction from variable light conditions, flexible battery configuration for 12/24/36/48V systems, and remote configuration options.