The AMP rating helps identify the intended capacity and application of each VoltFlow jumper lead model. The range is cumulative, meaning higher-rated models can also be used for the smaller vehicles covered by the models below them.

• 400AMP: small cars, sedans and compact petrol vehicles
• 600AMP: SUVs, light commercial vehicles and larger petrol engines
• 1000AMP: virtually all common petrol-engine applications, 4WDs and diesel V8s
• 1550AMP: all smaller applications, plus large 4WDs, diesel V8s and light- to medium-duty trucks
• 1800AMP: the entire VoltFlow application range, including heavy trucks, prime movers, tractors, farm machinery and demanding commercial equipment

A higher-rated lead set does not force its maximum rated current into a smaller vehicle. The vehicle’s starting system draws the current it requires. System voltage must still match, and the vehicle manufacturer’s instructions must always be followed.

Cable length determines how closely the assisting vehicle must be positioned to the vehicle with the flat battery.

• 3.6m cables: suitable for many passenger-car and SUV connection positions.
• 6.0m to 6.5m cables: provide additional reach around 4WDs, trucks, tractors, wide engine bays and vehicles that cannot be positioned nose-to-nose.

Cable construction, vehicle suitability and correct connection procedures remain important regardless of cable length.

Surge protection is designed to help reduce the effect of voltage spikes that can occur during jump-starting.

Reverse-polarity protection or indication helps identify an incorrect positive and negative connection. The exact protection and monitoring features vary by model.

These features support correct use but do not replace checking terminal polarity, following the vehicle manuals or using the correct connection sequence.

Only use jumper leads that are stated as suitable for the vehicle’s electrical system and application.

The assisting vehicle and the disabled vehicle must use the same system voltage. Never directly connect a 12V vehicle to a 24V vehicle.

Check both vehicle owner’s manuals for designated jump-start terminals, system-voltage information and model-specific instructions.

Jumper leads transfer starting power from a compatible donor vehicle. They do not contain an internal battery, but they require another suitable vehicle to be available.

Portable jump starters contain their own rechargeable battery and can be used without a donor vehicle, provided the unit is charged and suitable for the vehicle.

Neither option is universally better. The appropriate choice depends on vehicle type, storage requirements, maintenance preferences and the likely roadside situation.

Select the model according to the vehicle, engine size, required cable reach and manufacturer’s starting requirements.

The 400AMP–1000AMP range covers virtually all common petrol-engine applications. The 1000AMP model also suits many 4WDs and diesel V8s. The 1550AMP model adds large 4WDs and light- to medium-duty trucks, while the 1800AMP model adds heavy trucks, prime movers, tractors and farm machinery.

Yes. A higher-rated VoltFlow model can also be used on a lower-demand vehicle.

For example, the 1800AMP model can be used on a small car, sedan, SUV or 4WD, as well as its intended heavy-vehicle and machinery applications.

The higher AMP rating indicates the capacity of the lead set; it does not force that full amount of current into the vehicle. Both vehicles must still use the same system voltage, and the correct connection procedure must be followed.

Yes. The 400AMP and 600AMP models use 3.6m cables. The 1000AMP model uses a longer 6.0m cable.

All three ratings are available through the 400AMP–1000AMP product listing .

The 1000AMP model is the general VoltFlow option for many 4WD and diesel V8 applications.

The 1550AMP model is also suitable and may be preferred for particularly large 4WDs, heavier starting requirements or when additional cable length is useful. The 1800AMP model can also be used on these vehicles.

The 1550AMP model is intended for large 4WDs, light- to medium-duty trucks, commercial vehicles and workshop applications.

The 1800AMP nitrile model is the ultimate heavy-duty option for heavy trucks, prime movers, tractors, farm machinery and demanding agricultural, commercial or industrial applications.

The 1800AMP model can also be used on all smaller applications covered by the rest of the VoltFlow range.

Only use a VoltFlow model that is specifically stated as suitable for the relevant vehicle and system.

Both vehicles must use the same system voltage, and the vehicle manufacturer must permit jump-starting. Never directly connect a 12V vehicle to a 24V vehicle.

Nitrile refers to the outer cable insulation material. It is used on the 1800AMP model to provide flexibility and durability for heavy-duty handling, agricultural environments and commercial applications.

The 1800AMP VoltFlow model uses a 6.5m, 14mm nitrile cable with 560 strands and 50% copper.

Reverse-polarity protection or indication is designed to identify or respond to an incorrect positive and negative connection.

The leads must still be connected carefully and in accordance with the vehicle manufacturer’s instructions. Never rely on the protection feature instead of checking terminal polarity.

Jumper leads should be inspected periodically and before use. Check the cable insulation, clamps, connection points and protection unit for wear, corrosion or damage.

Keep the leads clean, dry and stored in their supplied bag or carry case. Do not use them if the cable, clamps or protection components are visibly damaged.