Powerful, heavyweight battery: great, but wish the ports were labelled!
Big, powerful battery, but still (barely) small enough to fit in large jeans pockets alongside a phone, for charging-on-the-go. Never seen it run dry, despite charging two phones each night of a two-night camping trip. Only downside is the the ports aren’t labelled and some (by design) have their maximum output limited, so if you don’t know which ones those are by heart – or carry the manual around! – then you might find that some devices charge slower than they ought to. Still a great device, and even comes with a set of USB cables (A to B-micro, as used by most smartphones) for your convenience.