Einhell BT-BO 25/1 Jump Leads | 3.5m Battery Booster Cable For Jump Starting Petrol and Diesel Engines | 4 Fully Insulated Battery Clamps Tested To DIN 72553-25 | Includes A Practical Carry Bag

Einhell BT-BO 25/1 Jump Leads

The Einhell BT‑BO 25/1 jump leads are engineered to deliver reliable, high‑current power transfer for both petrol and diesel engines. Designed with a 3.5 m cable length and a robust 31.4 mm² aluminium core (copper‑plated), these leads can safely handle up to 350 A, making them suitable for vehicles ranging from compact cars to larger diesel trucks.

Key Technical Features

• Cable Length: 3.5 m – provides ample reach between vehicles or a battery and a portable charger.
• Cross‑Sectional Area: 31.4 mm² aluminium core, copper‑plated for excellent conductivity and reduced resistance.
• Maximum Current Rating: 350 A – sufficient for most automotive battery systems (12 V or 24 V).
• Insulation: Fully insulated with high‑temperature, flame‑retardant material that meets the DIN 72553‑25 standard.
• Battery Clamps: Four fully insulated clamps (two per lead) – each clamp is tested to DIN 72553‑25 for safety and durability.
• Connector Type: Standard 12 mm battery terminals, compatible with most automotive batteries.

Design & Build Quality

The leads feature a lightweight yet sturdy aluminium core that resists bending and fatigue. The copper plating enhances electrical performance while keeping the cable flexible for easy handling. Each clamp is constructed from high‑strength plastic with reinforced metal contacts, ensuring a secure connection even under vibration or harsh road conditions.

Safety & Compliance

All components of the BT‑BO 25/1 are rigorously tested to meet DIN 72553‑25, guaranteeing that the clamps and insulation can withstand high temperatures, electrical surges, and mechanical stress. The leads also comply with automotive safety standards for battery charging systems.

Practical Carry Bag Included

A dedicated carry bag accompanies every set of jump leads. The bag is designed to protect the cables from abrasion, moisture, and accidental damage during storage or transport. It features a clear window for quick identification and a sturdy zipper closure that keeps the leads neatly folded.

Versatile Applications

• Petrol Engines: Suitable for engines up to 5 500 ccm, covering most passenger cars, SUVs, and light commercial vehicles.
• Diesel Engines: Compatible with diesel engines up to 3 000 ccm, ideal for delivery trucks, vans, and small tractors.
• Emergency Use: Ideal for roadside assistance, mobile mechanics, or personal emergency kits.

Installation & Usage Tips

1. Ensure both batteries are fully disconnected before connecting the leads.
2. Attach one clamp to the positive (+) terminal of the dead battery and the other clamp to the positive terminal of the source battery.
3. Connect the remaining clamps to the negative (−) terminals, preferably on a grounded metal part of the engine block rather than the battery itself.
4. Start the source vehicle first, then attempt to start the dead vehicle. Once the dead battery is charged, disconnect in reverse order.

Maintenance Recommendations

• Inspect clamps and cable ends for corrosion or wear before each use.
• Clean contacts with a dry cloth; avoid abrasive cleaners that could damage insulation.
• Store the leads in the provided bag, keeping them away from extreme temperatures and direct sunlight.

Performance Highlights

The combination of a high‑current rating, durable insulation, and fully insulated clamps ensures that the Einhell BT‑BO 25/1 jump leads deliver consistent performance even under demanding conditions. Whether you’re tackling a dead battery on a long road trip or providing quick assistance in an emergency, these leads offer peace of mind with their proven reliability.

Conclusion

The Einhell BT‑BO 25/1 Jump Leads represent a comprehensive solution for automotive jump starting. With a generous cable length, high current capacity, DIN‑standard compliance, and an included protective carry bag, they are engineered to meet the needs of drivers, mechanics, and emergency responders alike.