Once a portable charger runs out of juice, you have to find an outlet to repower it. Solar power banks, however, help you avoid that problem — they can be repowered by the sun. Like solar chargers, ...

Man Builds 27,000,000mAh Power Bank That's Kind of Portable YouTuber Handy Geng fitted the power bank with 60 electrical outlets, which are capable of charging phones, electric bikes, and even ...