Back in the old days (well, about ten years ago), mobile phones were powered by NiCAD and NiMH batteries that lasted longer if you ran them down before charging them back up again. But if you’ve bought your phone anytime in the last five years, it’ll come with a Lithium-ion battery, which doesn’t have “cell memory” like the older units – meaning it makes no difference if you recharge from 1% or 99%.
