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Genuine Victron BMV data cable
The genuine six-core Victron BMV data cable for a clean, reliable shunt-to-display connection.
The Victron RJ12 UTP Cable 1.8m, part ASS030066018, connects a supported Victron BMV battery-monitor shunt to its physical BMV head unit. This genuine 1.8 meter RJ12 cable gives RV, marine, and off-grid installers approximately 6 feet of reach for accurate battery-monitor routing without relying on unsuitable telephone cords or confusing it with an RJ45 network cable.
Your battery monitor can only display accurate information when the shunt and head unit maintain a reliable connection.
This genuine Victron RJ12 UTP cable is the correct link between a supported BMV shunt and the physical BMV display head. The BMV uses the six-conductor cable to pass its monitoring signals and operate the head unit, making correct conductor count and cable construction essential.
The 1.8-meter length is especially useful when the shunt is mounted under a seat, inside a battery cabinet, or in a nearby marine compartment while the display is installed on a dashboard, wall, or control panel.
Use this Victron BMV data cable with supported BMV systems that have a separate shunt and head unit, including BMV-700, BMV-702, BMV-712 Smart, and supported high-voltage BMV models. Plug one RJ12 end into the shunt and the other into the RJ12 port on the rear of the display head.
At approximately 5.9 feet long, the cable provides practical reach from a battery compartment to a nearby monitor location without the large coil created by the standard 10-meter BMV cable. Leave a small service loop and avoid placing tension on either connector.
Similar-looking plugs do not guarantee the correct cable construction.
Victron warns that common telephone leads may omit conductors and often are not twisted-pair cable. A phone cord can physically fit an RJ12-style socket while still producing a blank display, unstable readings, or intermittent communication. The correct replacement is a manufactured six-core RJ12 UTP cable designed for the BMV connection.
UTP means Unshielded Twisted Pair. Victron specifies a six-conductor UTP cable for the BMV shunt-to-head-unit connection and recommends pre-manufactured cables to avoid missing wires, incorrect conductor order, and poor field crimps.
RJ12 plugs on both ends click into the supported shunt and head-unit sockets for a removable, serviceable connection. Route and support the cable so vibration, sharp edges, or cable weight cannot pull against the modular latches.
Replacement and custom-length routing for supported Victron BMV battery monitors.
Exact part matching and the correct cable architecture for supported BMV systems.
Exact part identification, length, connector format, and BMV compatibility guidance.
| Cable specifications and compatibility | |
|---|---|
| Manufacturer | Victron Energy |
| Epoch product title | Victron RJ12 UTP Cable 1.8m - ASS030066018 |
| Part number / SKU | ASS030066018 |
| Length | 1.8 meters / approximately 5.9 feet / 70.9 inches |
| Cable type | UTP — Unshielded Twisted Pair |
| Conductor count | 6-core / six-conductor cable |
| Connector type | RJ12 plug to RJ12 plug |
| Primary application | Connect a supported Victron BMV shunt to the BMV head unit |
| Example BMV compatibility | BMV-700, BMV-702, BMV-712 Smart, BMV-700H, and BMV-710H Smart systems that use RJ12 |
| SmartShunt compatibility | No — SmartShunt does not use the BMV RJ12 head-unit cable |
| VE.Bus / VE.Can compatibility | No — those networks normally use RJ45 UTP cables |
| VE.Direct compatibility | No — VE.Direct uses a dedicated four-pin cable |
| Cerbo GX connection | Not direct; connect the BMV head unit to GX equipment with the appropriate VE.Direct cable |
| BMV supplied-cable context | BMV monitors commonly include a 10m RJ12 UTP cable; this 1.8m version is a shorter replacement option |
| Available Victron RJ12 lengths | 0.3m to 30m |
| Electrical function | Low-voltage BMV monitoring connection; not a battery or inverter power cable |
| Cable family color | Gray |
| Compliance | Victron network-cable Declaration of Conformity: CE / EMC / Low Voltage / RoHS requirements |
| Manufacturer warranty | Victron standard 5-year warranty |
BMV shunt → RJ12 cable → BMV head unit.
Common companion items for BMV installation and GX integration.
Common questions about BMV compatibility, RJ12 versus RJ45, cable length, SmartShunt, GX connections, and telephone cords.
They are different connector sizes used for different Victron functions. This RJ12 cable uses the smaller six-conductor format for the connection between a compatible BMV shunt and BMV head unit. Victron RJ45 cables use the wider eight-position connector for supported VE.Bus and VE.Can networks. They are not interchangeable.
This cable is intended for Victron BMV battery monitors that use a separate shunt and physical head unit, including supported BMV-700, BMV-702, BMV-712 Smart, BMV-700H, and BMV-710H Smart installations. Confirm that both your shunt and display have RJ12 ports before ordering.
1.8 meters is approximately 5.9 feet, or 70.9 inches. It is a useful mid-length option for routing from a battery shunt under a seat or inside a battery bay to a nearby BMV display mounted on a dashboard, panel, or wall.
No. Victron specifically warns that common telephone cables may not contain all six conductors and are often not twisted-pair cable. A telephone cord can cause missing readings, unstable operation, or a blank BMV display. Use a manufactured six-core RJ12 UTP cable intended for the Victron BMV system.
No. A SmartShunt does not use this RJ12 shunt-to-head-unit connection because it does not have a separate BMV display head. SmartShunt communication is handled through Bluetooth and VE.Direct, depending on the installation.
No. This RJ12 cable connects the BMV shunt to the BMV head unit. To connect a compatible BMV head unit to a Cerbo GX or another GX device, use the appropriate VE.Direct cable from the VE.Direct port on the BMV display.
No. VE.Bus and VE.Can normally use the larger RJ45 UTP cable format. This RJ12 cable is specifically for the BMV shunt-to-head-unit connection and should not be plugged into VE.Bus, VE.Can, Ethernet, or BMS-Can ports.
Victron recommends using pre-manufactured RJ12 UTP cables because incorrect conductor order, missing conductors, or poor crimps can cause difficult-to-diagnose BMV errors. Use this factory-assembled cable instead of cutting, extending, or field-crimping a telephone-style lead.
It can be routed through a protected RV, marine, or off-grid electrical installation when properly secured. Keep it away from sharp edges, moving parts, heat sources, standing water, and high-current power cables where practical. Use grommets, strain relief, and cable support appropriate to the installation.
Victron offers RJ12 UTP cables in multiple lengths from 0.3 meters up to 30 meters. Choose the shortest length that reaches comfortably while allowing a small service loop and avoiding tension at either RJ12 connector.
