Matt Elliott is a senior editor at CNET with a focus on laptops and streaming services. Matt has more than 20 years of experience testing and reviewing laptops. He has worked for CNET in New York and ...

A battery is a device that stores energy in chemical form and can convert it into electric energy through electrochemical reactions. Lithium purification demands precise separations that discriminate ...

Most of us — casual users and enthusiasts alike — are forever searching for smartphones with the longest battery life. And while fast charging keeps us topped up every day, the absence of replaceable ...

Rechargeable batteries are an investment, and the best will last for hundreds of hours of use. They have several advantages over disposable batteries. Although they cost more to buy, rechargeable ...

Put a set of our Best Buy AA disposable batteries in your most power-hungry devices and they'll last more than three hours longer than the worst. For AAA batteries, our Best Buys last an hour and a ...

The DX7 runs on a Hitachi HD63B03RP CPU. Among other things, the DX7's firmware is responsible for handling user input, MIDI I/O, and processing the synth's LFO, pitch, and operator amplitude ...

This price reflects trading activity during the overnight session on the Blue Ocean ATS, available 8 PM to 4 AM ET, Sunday through Thursday, when regular markets are closed. Chart does not reflect ...

Oct. 24, 2025 A team of researchers has designed a theoretical model for a topological quantum battery capable of long-distance energy transfer and immunity to dissipation. By exploiting topological ...

Car batteries are the catalyst of any vehicle function How to find the correct battery for your car The best ones from trusted brands ...