Differences between alkaline and lithium-ion batteries depend more on device use than on performance alone. Alkaline batteries are widely sold in common sizes, are relatively cheap and easy to find, ...

Your camera dies. Your mic cuts. Your emergency flashlight? Dead. Energizer Ultimate Lithium claims to fix all of that with crazy-long life and cold-resistance. But ...

Longer-lasting phones, lighter drones, electric cars that drive farther. These are just some of the possibilities thanks to a new battery separator design from University of Florida researchers and ...

Your gadgets keep dying at the worst moment? Energizer Ultimate Lithium claims to last way longer than regular batteries. But is it hype, or the one power upgrade you ...