Learn how to build your own auto cut-off lead acid battery charger circuit for a 12V system. This DIY project will guide you through creating a reliable power supply, ensuring your battery is charged ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise.

However, most of us can't stay tethered to a wall outlet. Thankfully, you don't have to. The battery market is packed with options that can boost your phone's battery life no matter where you are.

I've scoured the depths of the battery universe to bring you the crème de la crème of rechargeable batteries, helping you make an informed choice and ensuring you get the best performance and ...

Make dead batteries a thing of the past with these reliable and durable trickle chargers. When it comes to choosing a reliable and high-quality trickle charger, the options are vast and varied.

Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio ...

A car battery charger will make sure ... Overload, voltage protection, short circuit, and back current circuits are built in. The controller supports all 12V battery types, including wet, gel ...

It’s a smartphone charger that looks like an oversized toaster but ... Each Swippitt Link case functions as a battery pack case for your iPhone, adding an additional 3,500mAh of juice to your ...

backup battery, or portable charger) to keep phones and other devices charged while on the go. Rather than tracking down a wall outlet, owning a USB power bank allows you to enjoy a conveniently ...