- Chinese tinkerer Handy Geng has built what could be the world’s biggest power bank.
- The 27 million mAh power bank can simultaneously run washing machines, TVs, and more. It can also charge a phone or two thousands of times over.
- It’s also fully portable, but probably not pocketable.
Power banks and portable chargers just aren’t big enough nowadays. Sure, charging speeds are on the up and up, but why don’t we see nine-digit battery capacity figures? Well, a Chinese tinkerer has largely solved this problem by building his own power bank.