Why everyone needs this USB power meter I tested that's shockingly accurate (and it's cheap)

I never thought that a $12 accessory could rival tools that cost much more. But this USB-C power meter delivers in profound ways.

I tested power-saving devices that promise lower electricity bills - only one was legit

Scam "power saving" devices are rampant online. These devices plug into an outlet and promise to "improve the use of energy," "extend the life of electrical equipment," and even "avoid illegal ...