Wired.com discusses a topic that is close to many collecting data in the field, and the issue of keeping a charge. From the article:
What if you could charge your phone (or device) without having to worry about the charging cable? Well, you can. This is the idea behind wireless charging. In short, you place your device on some type of pad and then phone gets power without a wire (as long as the phone also supports wireless charging). That’s where they get the term “wireless charging” – you know…because there are no wires.
Ways to wirelessly charge include the use of magnets, motion, and solar power. As field teams for healthcare, international development and others head to more remote areas, one can expect this to be a growing field in mobile world.