DubleUp
A credit card-sized power bank
AU$79 (about £55) FROM Dubleup, dubleup.com features 1x Lightning charger, LED indicator lights, Micro-USB cable
These days, iOS devices do more than ever before. From using Facebook Live to always being connected to your Apple Watch, iPhone batteries take a hammering, and rarely last a whole day without needing a charge. Weighing just 39.7g and at only 5mm thick, this credit card sized power bank slips easily into your wallet so you can juice up your iPhone or iPad when you’re on the go, no bulky charger required.
It has a fold-out lightning connector for charging iOS devices, and a Micro-USB input port used to charge up its own internal battery. The only other features on the device itself are an on/off button and a series of three LED indicator lights that tell you roughly how much charge is left, just like they do on a MacBook Pro.
Plugged straight into a wall socket, we found that the Dubleup took about an hour to reach full charge, and it boosted the battery of our test iPhone 5s by 50% after 20 minutes of being plugged in.
Perhaps it should have been called the Halfup, as you only get a half charge out of it, but the ease with which it fits into your wallet makes up for this in our opinion. When you can’t risk running out of battery, it’s essential.