Just Generators

The UK's Number 1for Generators and Power Equipment
01263 820202

Delivery is free of charge to most of the UK mainland* for orders over £50.00**.

* Scottish Highlands, Offshore UK & Republic of Ireland

If you're ordering to the Scottish Highlands, an offshore UK address or to the Republic of Ireland additional charges may apply. To receive a quote for these costs along with estimated delivery times, please contact us stating your address and the items you would like to order. You can still place your order through the website without receiving a quote but we will be in touch after the order has been placed to confirm delivery costs.

*The following Scottish and offshore postcodes may incur an additional delivery charge:

  • AB
  • BT
  • DD
  • DG
  • EH
  • FK
  • G
  • GY
  • HS
  • IM
  • IV
  • JE
  • KA
  • KW
  • KY
  • ML
  • PA
  • PH
  • PO
  • TD
  • ZE

**Orders under £50.00 will incur a shipping charge of £5.95. Our full delivery policy is here.

If your order is subject to any additional shipping charges, we will contact you (via email or telephone) prior to processing your payment.

For more information call our sales team on 01263 820202


Jumping Jack SUPERMAX – Powerful, Portable Jump Starter

Jumping Jack SUPERMAX – Powerful, Portable Jump Starter

To find out more about this product, please call our experts on 01263 820202 or fill out our contact form here

Availability: Out of stock

Regular Price: £95.00

Special Price: ex. VAT: £74.17 £89.00

RRP £99.99 | SAVE £11
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Quick Overview

Capable of starting an SUV, the Supermax is our most powerful emergency jump-start pack and portable USB charger yet!

Jumping Jack SUPERMAX – Powerful, Portable Jump Starter Details

Powerful enough to jump start a SUV, yet small enough to fit in a glove box, this is our most powerful portable battery pack yet. Capable of jump starting petrol and diesel engines up to 3.0 litres capacity, it can also recharge up to 8 phones, 2 tablets or four 13” laptops too… making it ideal for your next roadtrip, festival or camping adventure.

With 2 USB ports, a mammoth 15,000 mAh capacity lithium battery and multi-function LED torch, it can even charge 2 devices simultaneously. Like every Jumping Jack, the Supermax is supplied complete with 4-in-1 charging cable, combining USB, micro USB, 30 pin and Lightning compatible connections in a single cable. Slot it into the Supermax’s USB port and your favourite devices will be charging in seconds.

The Supermax even comes complete with a wide range of laptop tips, ensuring compatibility with almost any laptop too – excluding MacBooks, MacBook Airs and MacBook Pros.

What’s it compatible with?

This portable lithium battery pack is fully compatible with a wide range of electronic devices including iPhones, iPods, iPads, Kindles and Nooks, together with smartphones, laptops and tablets from leading manufacturers including Huawei, HTC, LG, Nokia, Samsung, Sony and ZTE.

The Supermax can also of course jump start most petrol and diesel engined cars, motorcycles, vans, tractors, lawnmowers and quads up to 3.0 litres capacity.

What’s in the box?

Supplied complete with product instructions, jump start leads, Jumping Jack 4 in 1 charging cable, 230v AC 3 pin mains charger, laptop charging tips, zipped carry case and in-car 12v charging unit.


Weight 0.474 kg



12v Jumpstart 5v/2a 12v,16v,19v

Start Current


Peak Current






Life Time

1000 cycles


Brand CJC
Weight 474g
Warranty 1 year
Need Help? Delivery

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