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 ...

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

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 are scores of solar-powered battery chargers on the market already, offering a greener alternative to juice up your devices. But these chargers often fail to live up to expectation — either ...

You can harness the power of the sun's rays to charge your electric vehicle. Here's how many solar panels you'll need to do it. Driving an Electric vehicle is one way to help reduce the impact you ...

Put the Solar PowerFold in the Sun for a few hours to bring a useful charge to your iPhone. Photo: Ed Hardy/Cult of Mac A solar-powered battery should be part of any disaster-preparedness kit, and the ...

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, ...

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 ...

David Kuchta, Ph.D. has 10 years of experience in gardening and has read widely in environmental history and the energy transition. An environmental activist since the 1970s, he is also a historian, ...

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

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 ...