When your iPhone runs out of juice, most people start scrounging around for cables and outlets. But if you’re on the road or stuck at a meeting or event, that’s not so easy. This is where you need a portable and cordless phone charger. This external battery cuts down charging needs by half, and the best part is that it comes in a stylish case that holds your iPhone too. You can charge it while you’re using the phone, without having to take it out of the case.