noun. A mental condition characterized by anxiety about the remaining battery life of your portable electronic devices. Sufferers will spend all their time worrying about how to charge their device and will be extremely anxious when the low battery warnings appear on their gadgets, especially when away from a power socket.
Enrique bought a really expensive solar panelled back pack to charge his phone from, in order to reduce the powernoia he feels when away from a power socket for any length of time. He finds it particularly useful on his "special mushroom" picking expeditions in the forest.