Just Mobile Gum Max Duo™

The twin-powered backup battery

Just Mobile Gum Max Duo™ is the supercharged backup battery for iPhone and iPad.

With an 11200mAh capacity, the aluminium-clad Gum Max Duo™ will give you up to 7 extra hours of iPad battery life. And with two USB outputs, you can simultaneously charge your iPad and iPhone.

You can keep an eye on Gum Max Duo's remaining power using the 8-LED charge indicator, and recharge it using a stand USB cable. And with a colourful Rubber Sleeve providing protection on the move, you can be sure you’ll never run short of juice – wherever you are.

The Rubber Sleeve is available in three different separate colors.

Also compatible with iPhone 5*, iPad 4*, iPad mini* and iPod touch (5. Gen.)*.
(*Lightning to USB cable not included)

$99.95 plus shipping & handling In stock

We Live Design

Resellers forJust Mobile Gum Max Duo™
FeaturesDimensionsBox ContentsFAQCompatibility
  • Quick charge
  • High-grade aluminium shell
  • Black shockproof rubber case included
  • Choice of colours optional
  • 1A USB output for iPhone
  • 2.4A USB output for iPad 
  • 11.200mAh capacity


Design Object No.: PP-828

  • 8.3 x 11 x 2.6 cm
  • 273 g
  • 3.3 x 4.3 x 1.0 inch
  • 9.62 oz
  • Gum Max Duo™
  • USB charging cable
  • Shockproof rubber sleeve in black
  • user manual

Q: Is Gum Max Duo™ compatible with the iPhone 5C?
A: Yes, you can use the original Apple lightning cable that came with the iPhone 5C.

Q: Is Gum Max Duo™ compatible with the iPhone 5S?
A: Yes, you can use the original Apple lightning cable that came with the iPhone 5S.

  • Tablet:
    iPad 1, iPad 2, iPad 3, iPad 4*, iPad mini*, iPad mini with Retina Display*, iPad Air*
  • Smartphone:
    iPhone 3, iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5*, iPhone 5s*, iPhone 5c*
  • iPod touch:
    iPod touch 1, iPod touch 2, iPod touch 3, iPod touch 4G, iPod touch 5.Gen.*