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.

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 ...

Paired Power, a US solar charging infrastructure manufacturer, has developed PairTree, a standalone, solar-powered canopy and EV charger that takes an average of four hours to install. Like Paired ...

This flexibility means you can keep the 1,070Wh battery topped up from household electricity for emergency preparedness, then ...

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

MUNICH--(BUSINESS WIRE)--SolarEdge Technologies, Inc., (“SolarEdge” or “the Company”) (Nasdaq: SEDG), a global leader in smart energy technology, today launched a solar-powered EV charging solution ...

EcoFlow, a global innovator in residential energy storage and smart home energy ecosystems, has formally partnered with Go Solar Australia to expand the availability of EcoFlow's advanced home battery ...

SYDNEY, Nov. 25, 2025 /PRNewswire/ -- EcoFlow, a global innovator in residential energy storage and smart home energy ...

Winter power outages leave you sitting in the dark with a dying phone and a fridge full of thawing food. This Jackery power ...