Free UK Next-Day Delivery on All Energisers
Product
1 / 10

Electric Fence Energiser, 3.5 Joules 6.2 Miles,Input 12V Output 8 KV or 12KV,Electric Fence Charger High Voltage Pulse C

4.7 (214 reviews)
£95.43

£95.43 inc. VAT (£79.53 ex. VAT)

Order now — dispatches Monday morning FREE UK Delivery
Selling Fast — 27 ordered this week
32 ordered this week
  • 3.5-joule pulse powers fencing across up to 6.2 miles.
  • 12V input suits battery-backed setups in remote grazing fields.
  • Selectable 8kV or 12kV output matches different livestock containment needs.
  • High-voltage pulse design delivers a strong deterrent while using low input power.
Free UK Delivery 30-Day Returns Secure Checkout 12-Month Warranty

Why Choose ElectricFe

If you are looking for the best electric fence energiser to secure your livestock without paying premium brand prices, the ElectricFe Pro 3.5J is your ideal solution. Engineered for the demanding UK agricultural environment, this versatile unit operates seamlessly as a mains electric fence energiser for permanent yard setups, or as a portable electric fence energiser when connected to a 12V leisure battery for remote paddocks.

Uncompromising Power for All Livestock

Delivering a robust 3.5 joules of stored energy, this livestock fence energiser provides a sharp, high-voltage pulse that commands respect from horses, cattle, sheep, and pigs. As a dedicated 3.5 joule fence charger, it easily pushes power through up to 10km of multi-strand wire, making it a highly effective 10km fence energiser even when vegetation challenges the line. Whether you need a dependable horse fence energiser for your equestrian property or a heavy-duty electric fence energiser for cattle field fencing, this unit delivers consistent, reliable shock performance.

Built for the British Weather

Housed in a rugged, IP65-rated weatherproof casing, this farm fence controller is designed to brave the elements. It functions perfectly as a professional electric fence energiser, featuring an easy-to-read LED pulse indicator so you can check your fence's status at a glance. For landowners looking to buy electric fence energiser units that offer genuine value, this electric fencing power unit provides the performance of top-tier brands at a fraction of the cost.

Technical Specifications

Stored Energy
3.5 Joules
Output Energy
2.8 Joules (under load)
Max Output Voltage
12,000V (12kV)
Power Supply
230V Mains / 12V DC Battery
Max Fence Length
Up to 10km (multi-wire)
Weather Resistance
IP65 Rated
Certifications
UKCA, CE, RoHS
Dimensions
240 × 170 × 85 mm

Price Comparison

See how our price compares across UK retailers

ElectricFe UK (Specialist)BEST
£95.43
Delivery: FREEWarranty: 12 months + UK Support
eBay (est.)
£119.29
Delivery: VariesWarranty: Seller dependent
High Street RRP
£152.69
Delivery: N/AWarranty: Varies

Prices checked 17 July 2026. Prices may vary.

Customer Reviews

4.7 out of 5Based on 214 reviews
Verified Purchase

I was looking for an electric fence energiser for cattle field fencing and didn't want to pay Gallagher prices. This 3.5 joule unit is brilliant. Pushes 8kV through the line even with a bit of wet grass touching it.

Gareth Davies, CarmarthenManchester
Verified Purchase

Excellent 12v electric fence unit. We use it off-grid on a 12V leisure battery for our highland ponies. The pulse is strong and the LED indicator is very handy for checking it from a distance.

Fiona MacLeod, InvernessBristol
Verified Purchase

Bought this mains electric fence energiser online after our old Rutland packed up. It arrived next day as promised. Very easy to mount in the barn and hook up to the main paddock. Highly recommended.

Thomas Wright, YorkBirmingham
Verified Purchase

A very capable farm fence controller. Plenty of power for the sheep netting. My only slight gripe is that it doesn't come with an earth rod in the box, so I had to order one separately.

Sarah Jenkins, TauntonEdinburgh
Verified Purchase

Without a doubt the best electric fence energiser I've used for the price. The dual power option is a lifesaver when we need to move the cattle to the summer grazing where there's no mains power.

Ian Fletcher, CarlisleLeeds
Verified Purchase

Solid, well-built electric fencing power unit. It's currently running about 6km of high tensile wire for our dairy herd and hasn't missed a beat. Good value for money.

David O'Connor, BelfastSheffield
Verified Purchase

Perfect horse fence energiser! The weather-resistant casing is robust, and it survived the recent torrential rain without any issues. Gives a very sharp shock that keeps my cob off the timber rails.

Chloe Saunders, NorwichGlasgow

Frequently Asked Questions