Discover how to make a homemade battery capable of charging your smartphone using simple materials like copper foil, aluminum ...

Electric vehicle charging is complex, and having the best long-term ownership experience requires the right charger.

Multifunction devices are great...as long as you can find uses for all (or at least some) of those functions that you end up paying for.

An offline battery charger — using the Unitrode UC3906 battery charger controller chip and a Vicor Maxi, Mini, Micro Series DC-DC converter module — provides design flexibility, small size, and high ...

The 12-volt battery is one of the least complex components in modern vehicles but one of the most crucial. If it’s not in good condition, the engine won’t start, nor can any of the vehicle’s fancy ...

Battery health in EVs declines approximately 2.3% annually, with fast charging and high temperatures accelerating degradation ...

We may receive a commission on purchases made from links. Across major power tool brands, DeWalt lands at or near the top spot in many brand rankings. You'll often find its yellow-and-black power ...

Trickle chargers and smart chargers with testing and maintenance capabilities serve the common purpose of charging batteries, but they differ in their functionality, efficiency, and features. So with ...

️ Editor's note: This article was updated with new information in December 2025. Dead batteries are a predictable reality for any car that spends more time parked than driven. Battery discharge does ...

Add Yahoo as a preferred source to see more of our stories on Google. Woman in climbing gear looking at bright sun shining over mountain range The best solar chargers are great for keeping your phone, ...

At a bone-chilling 9°F, one Chicago Tesla Model X owner woke up to a "1% battery nightmare" and a portable charger that ...