I'm sure that you have been told to leave your new cell phone plugged in for an extended period when you charge it for the first time. But according to batteryuniversity.com, lithium-ion batteries, which are used by most new cell phones, require no special treatment out of the box. "Unlike nickel and lead-based batteries, a new lithium-ion pack does not need cycling through charging and discharging. Priming will make little difference because the maximum capacity of lithium-ion is available right from the beginning. Neither does a full discharge improve the capacity of a faded pack." That's it - myth busted!