If you're not a professional coder or writer -- or if you use a different, "work" computer for that -- and/or you've got an iPad and an iPhone, going for days w

If you're not a professional coder or writer -- or if you use a different, "work" computer for that -- and/or you've got an iPad and an iPhone, going for days without using your machine is not a farfetched scenario. But, beyond that: I might use my computer every few days and yet not want to have to plug it in every few days.