Ask Engadget: how long should I first-charge a battery?

We know you’ve got questions, and if you’re brave enough to ask the world for answers, then here’s the outlet to do so. This week’s Ask Engadget inquiry is from Bernard, who wants an answer to the age-old question of ensuring you get the most out of …


Stretchable, serpentine lithium-ion battery works at three times its usual size

While we’ve seen more than a few flexible batteries in our day, they’re not usually that great at withstanding tugs and pulls. A team-up between Northwestern University and the University of Illinois could give lithium-ion batteries that extreme elas…


Rice University researchers create spray-on battery, powered bathroom tiles

Liquid solar cells are pretty neat, to be sure, but current-generating paint can be a hard color to match. Good thing, then, that researchers at Rice university have developed the perfect complement: a spray-on battery. By carefully layering five coa…


Electric Motor Werks hands-on at Maker Faire (video)

Have a BMW 3-Series that requires major engine work? Want to convert it to electric and improve performance, ActiveE style? The folks at Electric Motor Werks have you covered. Instead of making purpose-built electric cars, the company — which showe…