Killed the battery already.

[TurboFool]

Originally Posted by sn0b0ard

Do not let your phone's lithium ion battery die completely! This is extremely bad for the battery. Lithium Ion batteries DO NOT have a memory (unlike previous NiCa batteries). It does not matter to pre-charge the battery. Charge the phone exactly how long the tag on the USB cable says. Do not overcharge your battery.



Source:
http://www.batteryuniversity.com/parttwo-34.htm

While true, you'll also find the common contradiction from the exact same resources that says you need to deep charge the battery a few times when it's new before you'll get the full life.