Apple is investigating hydrogen fuel cells in mobile devices as an alternative to present battery charging technology, partly to achieve far longer battery life, but also to be more ecologically sound.
Apple patents are always about technology, or systems to use that technology, and occasionally they are specifically for devices such as the MacBook Pro. The newly granted “Portable computing device for external fuel cell control,” is all of these things, but it’s also unusual in how it sets out both the environmental and the political concerns that have prompted it.
