Worldwide voltage, suitable for the whole world, car adapter is available; Compatible for Li-ion batteries 18650 18490 18350 17670 17500 16340(RCR123), 14500 Ni-MH/Ni-Cd A AA AAA batteries and 3 ...

to be the king of flashlights, but replacing those pesky D-cell batteries is kind of ridiculous in this day and age. So [Travis] decided to upgrade it to make use of the ever-so-common ...

French researchers have announced a prototype of an 18650 sodium-ion battery. If you’ve bought a powerful LED flashlight, a rechargeable battery pack, or a–ahem–stronger than usual LASER ...