The Victron BlueSolar MPPT 150/45 is a solar charge controller for off-grid and battery-based systems. It takes a maximum PV open-circuit voltage of 150V and delivers up to 45A of charge current, sized for medium to large battery banks. It suits installers and off-grid specialists who want a standalone MPPT controller without built-in Bluetooth.

Key features

• PV input, maximum open-circuit voltage of 150V, allowing higher-voltage series-connected panel strings.
• Charge current, 45A maximum, for 12V, 24V and 48V battery banks.
• Tracking, true MPPT algorithm that re-sweeps the IV curve as irradiance changes.
• Battery types, lead-acid (AGM, gel, flooded) and lithium-ion when configured correctly.
• Load output, street lighting and timer functions for direct DC load management.
• Weight, 1.4kg, suitable for panel or wall mounting.

Configuration and monitoring

Charge algorithms are user-programmable via the VictronConnect app using the optional VE.Direct Bluetooth Smart dongle, since this BlueSolar model has no Bluetooth built in. The VE.Direct port connects to Victron GX devices or the MPPT Control display for monitoring and data logging.

Applications

Fits off-grid cabins, rural properties, marine and narrowboat systems, and mobile installations such as motorhomes running 24V or 48V systems. It also works for agricultural or remote monitoring sites needing DC load control, and integrates into Victron-based systems with GX monitoring.

What's in the box

• Victron BlueSolar MPPT 150/45 charge controller

Installation notes

Fit by a qualified electrician or accredited solar installer. PV input must never exceed 150V open-circuit, including cold-start Voc. Set the battery voltage correctly before connecting PV, and match lithium charge profiles to the battery manufacturer's requirements. The VE.Direct port carries signal only, not power. G98 or G99 notification requirements apply where this forms part of a grid-connected or hybrid system.