The Schumacher Electric 2.4W Solar Car Battery Maintainer is on sale for $23 at Amazon, 42% less than the $40 it’ll run you ...

Your best bet, sans solar, is to get a variable voltage lab power supply with a volt and amp meter built in, that goes up to at least 40V. Set it to 40V, connect the battery, and watch the current.

There's been a lot of handwringing about the future energy demands of electric vehicles and AI data centers. But if Tesla's ...

When you are wheeling the backcountry for extended periods of time you may need auxiliary battery power. Of course, your 4WD battery is charging while the engine is running, but once you are stopped, ...

Tesla has quietly turned a dusty stretch of California highway into a full-scale experiment in what a fossil-free charging ...

Improved performance and affordability make portable solar chargers an attractive power option when there's no wall outlet in sight. Executive Editor David Carnoy has been a leading member of CNET's ...

Charging EVs in parking lots with solar power is a marriage made in heaven. But the general rule for any solar or charging installation is that it be grid tied, so it can charge vehicles from the grid ...

DIY solar power projects have always been fascinating to me. I kind of wrote the book on the subject. And since electric bikes have always been a huge part of my life, combining the two has always ...

When I came across this solar-powered bike, I wondered which bikemaker could be behind it. Someone well-established like ...

MASK Architects recently unveiled an electric motorcycle concept called the Solaris that can charge itself thanks to solar ...