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Genuine Victron BMV monitor cable
The exact 5-meter replacement cable for supported Victron BMV shunt-to-display connections.
The Victron RJ12 UTP Cable 5m is a genuine replacement cable designed to connect a compatible Victron BMV battery monitor shunt to its head unit. At approximately 16.4 feet long, it provides a cleaner alternative to the standard 10-meter BMV cable when a compact RV, boat, camper van, or off-grid installation does not need 33 feet of excess wire.
Connect the BMV shunt to the display with the cable Victron specifies.
A Victron BMV battery monitor depends on the shunt and head unit working together. The shunt measures current flowing into and out of the battery bank, while the head unit displays battery information and calculated state of charge. This RJ12 UTP cable carries the BMV measurement signals between those two components.
It is not a VE.Direct cable, an RJ45 network cable, or a generic telephone lead. Use it only in a documented RJ12 BMV shunt-to-head-unit connection.
This cable is designed for compatible Victron BMV models that use the RJ12 connection between the shunt and round display head, including the BMV-700, BMV-702, and BMV-712 Smart. Confirm the connector and installation manual for your exact BMV model before ordering.
Victron BMV monitors commonly include a 10-meter RJ12 UTP cable. The 5-meter ASS030066050 gives compact camper vans, smaller RVs, bass boats, sailboats, and nearby electrical panels enough routing distance without forcing installers to hide a large coil of unused cable behind the dashboard.
Six conductors, twisted-pair construction, and factory-installed connectors.
Victron specifies an RJ12 UTP cable with six conductors for the BMV shunt-to-head-unit connection. Many telephone cords that look similar do not contain all six conductors and are not twisted pair, so Victron states that they cannot be used for a BMV monitor.
Victron also recommends using pre-manufactured RJ12 cables rather than cutting and crimping a replacement. A poor modular-connector crimp can create intermittent or unusual monitor behavior that is difficult to diagnose.
Exact-match details for Victron part ASS030066050.
RJ12 describes the connector used in this BMV application; it does not make every six-position modular cable compatible. Confirm the exact BMV model and shunt-to-head-unit connection before ordering. This listing is for the cable only and does not include a BMV monitor, shunt, display, VE.Direct cable, or mounting enclosure.
Frequently asked questions
It connects the shunt of a compatible Victron BMV battery monitor to the BMV head unit or round display. The cable carries the monitor's measurement signals between the shunt and display; it is not a battery power cable.
It is designed for Victron BMV monitors that use the RJ12 connection between the shunt and head unit, including the BMV-700, BMV-702, and BMV-712 Smart. Check the manual and connector on your exact monitor before ordering.
Yes. A BMV-712 Smart normally includes a 10-meter / 33-foot RJ12 UTP cable. The ASS030066050 is the shorter 5-meter / 16.4-foot Victron option for installations where the supplied cable is longer than needed.
This six-conductor RJ12 UTP cable connects a BMV shunt to its BMV display. RJ45 cables are wider eight-conductor cables used for documented VE.Bus and VE.Can connections. VE.Direct uses a smaller proprietary connector for links such as a BMV-to-GX connection. These cable types are not interchangeable.
No. Victron explains that ordinary telephone cords may not contain all six conductors and are not twisted pair, so they cannot be used for the BMV connection. Use a pre-manufactured RJ12 UTP cable specified for the Victron monitor.
Cutting and re-terminating the cable is not recommended. Victron advises using pre-manufactured RJ12 cables because a poor modular-connector crimp can cause intermittent, difficult-to-diagnose monitor behavior. Choose the closest factory length and manage any small amount of excess cable with a protected service loop.
No. The RJ12 cable connects the BMV shunt to the BMV head unit. To connect a compatible BMV monitor to a Cerbo GX or another GX device, Victron specifies the monitor's VE.Direct port with a VE.Direct cable or VE.Direct-to-USB interface.
Follow the Victron manual for the exact BMV monitor, shunt, battery-bank wiring, configuration, and synchronization procedure. Correct state-of-charge reporting depends on proper shunt placement, complete load-and-charger wiring through the shunt, correct battery settings, and a secure RJ12 connection.
