The unit also functions as a doorbell, courtesy of a large button ... powered by a rechargeable 15,000mAh battery and four AAA batteries that serve as backups in case the primary cell dies.

Samsung is one of the few companies still bothering to make 8K TVs, and its QN990F is a stunner. Still, 8K resolution isn't ...

They weigh the same, use the same coin cell battery, are both waterproof ... armband heart rate monitors we've tested. A rechargeable battery ensures you never have to buy replacement coin cells ...

The online retailer is offering major discounts on brands like JBL, Biossance, Beats and more through March 31.

Engadget's experienced editorial team has tested and reviewed hundreds of digital cameras and photography gear over the past 20 years to help you find the best options available.

It’s no secret that we love Amazon. New here? We’re happy to tell you why: The e-tail giant has the best deals on the market, ...

Rechargeable batteries are one of the best ways to save money and reduce e-waste. Upgrade this spring if you're still tossing out dead batteries. However, you need to be wary when buying ...

The Japan Atomic Energy Agency has developed what it says is the world's first "uranium rechargeable battery" and that tests ...

A team led by Su-Il In, a professor at South Korea's Daegu Gyeongbuk Institute of Science and Technology, is developing an ...

and manganese for the production of new rechargeable batteries. Current hydrometallurgical methods for the reprocessing of spent lithium-ion batteries are based on acid or ammonia leaching processes.

If you love the concept of a Battery Daddy–like organizer but prefer rechargeable batteries, Sarah recommends the EBL Black Batteries Box. “This sturdy plastic briefcase is packed with a dozen ...