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  • [GIVEAWAY] Just Mobile's Gum Max Duo is a Beautiful Backup Battery

    Everyone needs a charger for their iPad or iPhone sometimes - whether it's when you're on vacation, at work, or because your spouse keeps hogging the chargers. Let's take a look at Just Mobile's Gum Max Duo.


    Just Mobile has been making awesome Apple products since the release of the iPhone. They're based out of Taiwan, and have a long history of creating really cool accessories that feel as if they came straight from Cupertino's R&D labs. We love these guys!

    In the Box

    The box is a simple and clean piece of packaging - the heavyweight black box has a picture of the Gum Max Duo on the outside, and a brief description. You can open a flap on the front to see through a plastic window to the actual Gum Max Duo.

    Inside the box you'll find the Gum Max itself, in a black rubber sleeve. There's also a user manual, a micro-USB to USB charging cable (you'll need your own iPhone/iPad charging cable), and a Just Mobile sticker.


    Like everything Just Mobile makes, the Gum Max Duo is a beautiful mix of form and functionality. It fits well in a hand, and is all brushed aluminum and smooth curves.

    On one side of the aluminum finish there is a single button and 8 LED status lights. Press the button to see the charge left in the Gum Max Duo. The other side is unblemished blushed aluminum. On the two slimmer ends of the device are the charging ports. One side has a micro-USB port which you use the included cable with to charge the Gum Max. The other side has two ports to charging USB devices like your iPhone and iPad - both a 1A output and a 2.4A output.

    I was able to charge my iPad a couple times as well as charge my iPhone twice before having to recharge the Gum Max Duo. Recharge the backup battery by just plugging it into any standard USB port. At home I use my normal iPhone charger, and plug the iPhone into the Gum Max Duo - charging both at the same time.

    A cool feature Just Mobile includes with the Gum Max Duo is these colored rubberized shockproof sleeves. They protect the device from scratching, light drops, and dirt, and offer a fun way to customize the charger a bit. Just Mobile sells a red, blue, or yellow one for $12.95 each (plus shipping) if you'd like to color up a bit more. The sleeves allow you to see the charging LED status lights through the material.

    Price / Conclusion

    You can pick up a Gum Max Duo for $129.95 on the Just Mobile website. A little pricey, but still competitive considering it's a dual charger and has 2.4A power as well! At that price I do wish there was a Lightning to USB cable included, or at least a 30pin charging cable. It'd also be nice to see an AC adapter to charge the Gum Max Duo with. I'm not a fan of this "a USB cable alone is enough" mentality for charging devices lately.

    We're giving both the Just Mobile Gum Max Duo 4.5 leaves - it's clean, thoughtful design and perfect function are great!

    As is customary for an MMi review, Just Mobile is hooking up our readers with free stuff! (Thanks guys!) We've got a free Gum Max Duo to send to a reader. Use the widget below to grab entries into the raffle, and we'll pick a winner Friday morning.

    This article was originally published in forum thread: [GIVEAWAY] Just Mobile's Gum Max Duo is a Beautiful Backup Battery started by Kyle Matthews View original post
    Comments 22 Comments
    1. JeremiahSantos's Avatar
      JeremiahSantos -
      it's a sure shot on the long go where there are no options for battery charge up .. the device is of immense help to pack your mobile with power again even with due safety.. I'm going to use it most as i've to travel a lot due to work commitments...
    1. buttamix's Avatar
      buttamix -
      I've always wondered how this worked