A battery backup for the solar-mains hybrid lamp design that supplies a constant light output regardless of available solar ...

You can recharge via solar during the day and hand-crank at night, and that’s if you don’t have USB-C from elsewhere. Plus, you can use this to keep your other devices (e.g., phone) charged.

In addition to Bae Chul Soo, Lee Seung Chul, Gummy, and Solar are confirmed to join the project as judges. The four singers will give strength to the project aiming to revive songs from the ’70s ...