Description
Thunderbird MB-145 15km Mains / Battery Energiser
The Thunderbird MB-145 is a dual-power electric fence energiser that operates from either 240V mains power or a 12V battery. This MB-145 energiser is rated for up to 15km of fence and suits medium-sized rural properties, horse studs, and cattle operations where power source flexibility is important. The ability to run from mains or battery gives you a backup option if mains power fails, keeping your fence live at all times.
The MB-145 energiser delivers a strong deterrent pulse capable of containing cattle, horses, and sheep on fence runs up to 15km long. On mains power, the unit provides continuous, consistent output without any battery maintenance. When operating from a 12V battery, the low-power circuit preserves battery life while still delivering an effective charge. This makes the MB-145 a practical choice for properties with occasional mains outages or remote fence sections where mains power is not available.
For a complete installation, browse our range of electric fencing accessories including earth stakes, lead-out cable, and insulators. All are fully compatible with the MB-145 energiser system.
- Dual-power: 240V mains or 12V battery operation
- Rated fence range: up to 15km
- Effective for cattle, horses, and sheep containment
- Consistent mains output with battery backup capability
- Low-power battery circuit extends battery life
- Suitable for rural properties and remote fence sections
Why Choose the MB-145 Energiser?
First and foremost, the this energiser gives you the reliability of mains power with the flexibility of battery backup in one compact unit. Furthermore, the 15km fence range covers most medium-sized rural properties without requiring multiple energisers. As a result, you can manage your full property boundary from a single installation point. In addition, switching between power sources is straightforward when conditions change. According to the Australian Department of Agriculture, dependable fence energisers are essential to effective livestock management and property security.
Installation Tips for the the unit
Before mounting the unit, identify a sheltered location within reach of your 240V power point and your earth stake system. Then, install earth stakes in moist soil at a minimum depth of 1m for an effective earth return. In addition, run insulated lead-out cable from the energiser to your fence line to minimise energy loss. Finally, test the fence output with a digital volt meter to verify the unit is delivering an effective charge across the full fence run.





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