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Fitbit's next update could add AI-powered, personalized sleep guides, helping you pinpoint why you toss and turn each night.

Fitbit is working on a new sleep journal feature that will provide summaries, insights, and tips for a better night's rest.

The modernization of the Fitbit app continues with a redesign of the Weight stats page, while Google is working on a new “Sleep Lab.” ...

Credit: Michael Hicks / Android Central This weekend, I ran a 20-mile marathon training race wearing four fitness watches — ...

Batteries in electric vehicles can fail quickly, sometimes catching fire without much warning. Sandia National Laboratories ...

Do you have a Kindle that won't progress past the low-battery screen? Some simple troubleshooting steps may be all it takes ...

Two Ford trucks have reports of battery failures with related recalls. See which options are prone to losing power.