This site might help you.
How to Prolong Lithium-based Batteries - Battery University
They recommend charging it often and not for long periods to reduce the amount of stress that charging puts on your battery.
Overall their info and stats look rather consistent.
Apple - Batteries
And this one is from Apple which seems to back up the first one's claims.
P.S. Stonley, based on these two sites (and their data) their claim is that one charge cycle is going from 0 to 100% over a course of charges, EG: I use 50% of my battery one day and 50% the next day, THAT would be one full charge. I recommend reading both of them.
Look at Table 2 on the first link, if you have a 50% depth of discharge (50% battery left) you can get 1,500 charges out of a battery whereas you would only get 500 with a 100% depth of charge. I assume it would correlate depending on the voltage and charge used.
P.P.S.
How to Prime Batteries – Battery University
On this site there is a paragraph:
"Lithium-ion is a very clean system and does not need formatting when new, nor does it require the level of maintenance that nickel-based batteries do. The first charge is no different than the fifth or the 50th. Formatting makes little difference because the maximum capacity is available right from the beginning. Nor does a full discharge improve the capacity once faded. In most cases, a low capacity signals the end of life. A discharge/charge may be beneficial for calibrating a