Originally Posted by richarddenton
The phone is set to charge when it is below 4.2v per cell, the fully charged capacity of a single Lipo cell. If you leave it plugged in at night once the battery drops below 3.7v per cell the charging resumes. The constant up and down charging cycle is really not good for a Lipo battery.
I'm sure this is true, but for me it's not practical to unplug my phone when the charging is complete, as this would require getting up in the middle of night.
Therefore this is yet another advantage of the removable battery as I don't need to worry about such things and can just replace the battery if it gets damaged this way (which I don't think will happen)