You never know when the dreaded "low battery" notification will strike — but who wants to carry around a charging cable or backup battery all the time? The Nipper is a simple, ultra-compact solution that lets you top up your phone in emergencies, but is small enough to act as a keychain. The secret is simply that there's no power storage built in — you provide your own with a pair of AAs.
It's a bit low-tech, but it also means that no matter where you are in the world, no matter what plug type or power standard, you'll be able to stay charged. Just pull apart the two ends of the charger, snap two AAs into place and plug it into your phone (as long as it has a micro-USB port — Apple versions are on the way).
The power in two AAs won't bring you all the way back to 100 percent, but it should give you a couple hours of talk time or a few days of standby — long enough to find some more batteries, at any rate.
The creators of the Nipper are looking for a modest fundraising target of $9,292 on Kickstarter, and you can pre-order your own for a little under $20. You should get your Nipper next spring.