Power Cub 5200L

4 This battery pack is fairly small for its 5200mAh capacity, which should be enough for a couple of iPhone charges. It comes with an integrated Lightning cable as well as a USB socket, which is a nice balance between not having to worry about a cable and having flexibility. It outputs enough power to charge an iPad Air (when its asleep), and can charge an iPhone at around 10% every 10 minutes, so it’s good for a fast boost. It’s a really tidy package, and nicely made, but its price is currently a little steep for its capacity. Matt Bolton

A well-made, flexible battery pack that isn’t too large or heavy. The built-in Lightning cable is great too, but it doesn’t come cheap.