ZDNET's key takeaways Scam "power-saving" devices waste money and risk safety.Smart plugs and power strips actually cut ...

Ryobi 4V USB Lithium batteries are really convenient and easy to recharge and have a really easy way to see if they are fully ...

We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are under real engine conditions.

For around $25, the Neoteck TS20D is a fully-featured, well-made, and decently accurate tool that will handle most multimeter-related tasks. It's small enough to drop into a pocket or toolbox, durable ...