No need to get your nose close. Use a voltmeter or multimeter (your new best friends). Then check the battery voltage—around 12.6V when off, above 13V when running (with engine on). And, while testing ...

The best tech products announced this week include KEF's first Dolby Atmos soundbar and $70,000 wireless loudspeakers.

Samsung goes full-frontal for the Galaxy Z Flip 7, and brings a Flip FE along for the ride. Could this be the best clamshell yet?

Is your Dell laptop not turning on or stuck on black screen? Use these expert-tested fixes to solve charging, BIOS, RAM, or motherboard issues.

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