So after 300-500 charges we will need to replace battery?

[RchGrav]

Originally Posted by daveh98

That doesn't really prove that is better or anything? If you use the phone all day with talking, music and wi fi (which is reasonable) then you possibly could have drained the battery to "low" at the least. So you could be doing "full charges" on a daily basis. Also I dont think its good to charge the battery 5 times at 80%

Now if the above poster is right and the battery BEGINS to degrade after 3 or 400 then that isnt as bad.

Actually, since its Lithium Ion it won't hurt to charge when its at 80% to top off. Lithium Ion actually doesn't like being fully drained as repeated full drains can cause damage and limit the lifespan of the battery. For other battery types your statement holds true.

There is a lot of good battery information at http://www.batteryuniversity.com

Also check the Apple battery sites posted earlier.