2WAYS TO SUPPLY POWER:USB charging is convenient for your daily use, retro radio is built-in 1200mAH rechargeable battery. 2*D battery (not included) is essential in case of power outages .Note ...

A study finds that strong nuclear radiation enhances device efficiency. Researchers have developed a battery capable of ...

it never needs to charge and doesn't have a battery. Instead, it pulls power from ambient light and radio waves. Follow Tech Insider: On Facebook More from Tech Researchers at the University of ...