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Cutting-edge energy storage tech from New York's BioLite is helping to alleviate a problem for anyone who doesn't like ...

Ditch the cords and upgrade your gear. These 10 cordless power tools offer serious performance, freedom to move, and zero compromise on power.

The main floor head has LED lights to spotlight the dirt ahead ... and get free tips from our experts by signing up to the monthly Deals newsletter. Get the power of Which? in your pocket by ...

In all cases, it's helpful to keep a pocketable power bank in your pocket ... But it also saps your battery by having that low-light version of your display constantly activated.

Best Buy's Power Up Sale is offering steep discounts on everything from brand name speakers and headphones to TVs and ...

it's the other electrical bits in LED bulbs that fail and cut off the bulb's light. LED bulbs use DC power, which requires a converter and drivers to switch from standard AC power in homes.

As U.S. transit agencies increasingly order buses powered by batteries or hydrogen fuel cells ... Stadler is also supplying eight battery-electric trains for Chicago’s Metra commuter railroad system.

And because radiocarbon degrades very slowly, a radiocarbon-powered battery could theoretically last for millennia. In a typical betavoltaic battery, electrons strike a semiconductor, which results in ...

And because radiocarbon degrades very slowly, a radiocarbon-powered battery could theoretically last for millennia. In a typical betavoltaic battery, electrons strike a semiconductor, which ...