What is it? This Lightning charging cable has a built-in 800mAh battery. You can use it to charge your iOS device through the mains, or take it away with you and give it an extra burst of power when you’re on the move. The cable winds around the battery pack, so it won’t tangle. When’s it due? Get one now. Why are we excited? A clever circuit prioritisation system means while you’re charging through the mains, when your iOS device is fully powered, charging automatically switches to the battery. This added convenience could prove more useful than you think, especially if you regularly get caught with a flat iPhone.