I love my mobile gadgets because I can enjoy them wherever I go. Be it on the beach or on the top of the mountains, it feels good to know that I can connect with my friends on Twitter or Facebook, or that I can read and answer my emails. Well, I can enjoy all these as long as the batteries last, which sometimes is not quite as long as I’d wish. I know carrying a replacement battery is one solution, but that’s far from ideal. Spare batteries are usually expensive and besides, I don’t want to carry a bag [...]