A Thai soymilk company has figured out what to do with your old, dead batteries.
Using the leftover power of 1,500 used batteries donated by the public, the team created a wall of batteries with the ability to charge 140 smartphones. A video shows the batteries being placed in a large wall in sections of threes, before users approach the structure and plug in their phones.
See also: 6 Creative Hacks for Your Smartphone
Vitamilk estimates that over the course of two months, the wall has provided smartphones with an additional 3,328 hours of talk time Read more…