It’s a project called snapVCC, and it turns a 9 volt battery into a regulated 3.3 or 5 volt supply. The idea behind snapVCC is simple enough; just add a circuit board to the top of a nine volt ...

9V batteries are often found in devices that aren’t used very often. If you use a NiCd rechargeable battery you may find it completely discharged by the time you need it. Capacitors on the other ...

If you have recently bought a new iPhone 16, perhaps as part of the Prime Day Sale, then you'll be glad to know that iFixit ...

Finally, a collector conducts the charge to the battery's exterior and through the load. When a battery is inserted into an electrical device, the device completes the circuit between the two ...

What is the best solar battery overall? We've evaluated many solar batteries over the course of the year, and the Bluetti EP900 Home Battery Backup is CNET's pick for the best solar battery ...

Swedish battery maker Northvolt said on Wednesday the head of its main plant would step down with immediate effect in the ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy ...

During Amazon' Prime Day sale, you can save money on cordless power tools, batteries, and corded bench tools for DIY, ...

What a happy surprise the Pixel 9’s battery life is. Previous models have all suffered from average-at-best battery life, but the Pixel 9 goes beyond this. While it’s not stellar, it’s more ...

Is your phone, tablet, or laptop typically in the battery red zone before the day's end? These portable chargers and power banks give you the most boost when you're out of juice. I’m a Mobile ...

I’m one of the consumer PC experts at PCMag, with a particular love for PC gaming. I've played games on my computer for as long as I can remember, which eventually (as it does for many) led me ...

It has a built-in plug that folds up for easy storage, and colorful lights that clearly indicate when each battery is dead (red), half-full (yellow), or fully charged (green). This is the charger ...