In 2002, your mobile phone battery was roughly the size of a bar of soap.
It was a lump of lithium-ion that needed careful love and attention if it was going to give you its best. Rumours spread as to how to achieve this, as someone's "mate from IT" offered up hitherto unknown secrets from dingy internet chat forums. The tips became legend, techno folklore that is still followed by many today.
As such, we're here to kill the myths. Batteries have come a long way since the days of the 3310 - and many of your battery saving practices might be doing nothing at all.
Prepare to change your charging ways. It's powerful stuff.