I Used a Watt Meter to Save Money on My Electric Bill. It Was Weirdly Fun—and Enlightening.

For example, to get an accurate cost reading on a refrigerator, you’ll want to leave it connected to the meter for at least ...

We Put the Best Multimeters to the Test. Our Top Pick is Ideal for Both Beginners and Pros

Want to safely repair an electric appliance or simply test your home’s wiring? Get shopping tips as well as our top tool ...
CNET

Keep These 7 Devices Far Away From Extension Cords or Power Strips

Fourteen-gauge and 12-gauge extension cords are some of the most common extension cords. A 14-gauge cord can handle up to 1,800 watts, or 15 amps, the same as a standard wall outlet in the US. But ...
Hackaday

Don’t Believe Planck’s Constant? Measure It Yourself

We aren’t sure if [Looking Glass Universe] didn’t trust the accepted number for Planck’s constant, or just wanted the ...
Consumer Reports

Duralast Platinum AGM 94R H7-AGM

Cold Weather Performance: A higher score means more reliable cold starts. This test measures voltage after 15 and 30 seconds of cranking at 0ºF, using half the average claimed CCA, or Cold Crank ...