Victron Energy BlueSolar MPPT 150/4545A MPPT solar charge controller, 150V PV, 12–48V

Overview

The BlueSolar MPPT 150/45 is the 45A version of the 150/35, with the same 150V input limit, 186×130×70mm housing and 1.25kg weight. Nominal PV power rises to 650W at 12V, 1300W at 24V, 1950W at 36V and 2600W at 48V, and the maximum PV short-circuit current to 50A. A 50–63A battery fuse is required, and ECE R10-6 automotive approval is documented for vehicle installations.

• 35A or 45A charge current
• 12/24/48V automatic, 36V selectable in software
• PV input up to 150V (145V operating)
• Up to 2600W nominal PV at 48V
• Rotary switch with eight charge presets
• VE.Direct port, 98% maximum efficiency

How it works

With a 150V input limit these controllers take longer series strings than the 100V models and charge batteries from 12V to 48V; 12V, 24V and 48V are detected automatically, while 36V is selected with a software tool. The 150V figure is the absolute maximum at the coldest conditions, and 145V is the limit for start-up and operation. Charging is adaptive in three stages, and the internal sensor compensates the charge voltages for temperature.

Key features

Nominal PV power ranges from 500W at 12V to 2000W at 48V for the 150/35, and from 650W to 2600W for the 150/45; more PV can be connected, with input limited by the controller. Maximum efficiency exceeds 98% without a cooling fan, with full current up to 40°C. Eight preset algorithms are selected by rotary switch, or a custom one in VictronConnect. Self-consumption is 20mA at 12V, 15mA at 24V and 10mA at 48V.

Installation and compatibility

Mount vertically with the terminals at the bottom, 10cm clear above and below, within 3m of the battery and never above it. The 16mm² screw terminals take flexible stranded copper cable. Battery fuses are 40–45A for the 150/35 and 50–63A for the 150/45. When sizing strings, include the module temperature coefficient, since Voc rises in cold weather, and do not connect modules with optimisers. A virtual load output is available through a VE.Direct TX cable, as there is no physical one.

Monitoring and settings

Communication runs through the VE.Direct port: a VE.Direct Bluetooth Smart dongle or USB interface links to VictronConnect, which shows real-time data and 30 days of history and installs firmware updates, while a VE.Direct cable connects a GX device and the VRM Portal. A non-inverting VE.Direct remote on/off cable lets an external switch or BMS turn charging on and off.

Questions and answers