REDARC Smart Battery Monitor BSEN500 with 500A shunt500A shunt battery monitor with Bluetooth and R-Bus

Overview

The BSEN500 Smart Battery Monitor measures current through a 500A shunt with ±0.3% accuracy, plus battery voltage and temperature, and reports state of charge and time to full or flat in the RedVision app over Bluetooth 5.1 at up to 42m. REDARC lists batteries of up to 1250Ah and lead-acid, calcium, gel, AGM or LiFePO4 chemistry. It can run standalone or join an R-Bus network with a REDARC Manager or other RedVision products, and is the required data source for the DISP4000 Essentials display. It installs in the cabin, canopy or battery box, not the engine bay.

• ±500A shunt measurement, ±0.3% current accuracy
• Bluetooth 5.1 link to the RedVision app, up to 42m
• R-Bus connection to REDARC Manager and other RedVision products
• Lead-acid, calcium, gel, AGM and LiFePO4 batteries
• DISP4000 shows state of charge in 10 segments, no phone needed
• 9–32V operating range, 2-year warranty

How it works

The BSEN500 is a shunt that sits between the auxiliary battery negative and the vehicle common ground. It measures current up to ±500A, battery voltage and battery temperature, and calculates state of charge and the time until the battery is full or flat. A separate sense lead goes to the battery positive. On first installation the monitor calibrates itself, which finishes once the battery has been fully charged by a charger with at least three stages and the loads are switched off.

Readings are sent over Bluetooth to the RedVision app, or over the R-Bus network to a REDARC Manager (BMS1230S3) and other compatible devices. Setup is done with the RedVision Configurator app, where the installer enters the battery specifications and can lock the configuration with a 4–8 digit installer PIN.

The RedVision Essentials display

The DISP4000 is a small panel display that must be paired with a BSEN500. It shows state of charge in ten coloured segments and has three LEDs for mains, vehicle and solar sources, showing whether each is detected, in use or absent. Its buttons switch the illumination, adjust brightness, start Bluetooth pairing of devices on the R-Bus and, on compatible systems, trigger start battery recovery, which moves charge from the auxiliary battery to a flat vehicle battery for about 15 minutes.

Installation and compatibility

Both units are for interior use only: cabin, canopy, caravan or battery box, never the engine bay. The BSEN500 needs 30mm of free space on all sides and above, 100mm around the R-Bus and sense sockets, and must not be mounted with those sockets facing upwards. REDARC recommends a battery negative cable no longer than 1m, from 35mm² at 100A up to 150mm² at 500A. Terminals are M10, tightened to 20Nm.

The DISP4000 fits a 50.8mm hole and two screws, and connects to the R-Bus. With a TVMS Rogue, a Manager or a BCDC Alpha 100R it takes power from the R-Bus; with a BCDC Alpha 50R it needs the supplied power cable, fused at 2A near the battery.

Questions and answers