One way of dealing with smartphone battery issues is to carry an external rechargeable battery (or power bank) that can provide precious juice when you’re in a bind. There are plenty of options out there nowadays, some capable of charging a new iPhone 6s numerous times before having to be charged up again themselves. However, there are two problems with portable battery packs when it comes to Apple devices, and it’s one that manufacturers have yet to fix: they can be very slow to charge, and you generally have to leave them on for the entire night to recharge. Beyond that, you need to carry a separate micro USB charger to power them up.
One Chinese company thinks it has figured out a solution for both of these issues – a fast-charging a power bank. But to pull it off, it had to defy Apple. More →