Actually, that's better for your batteries. the longest-life scenario is to charge our battery to about 85%. That should put the cell voltage at around 4.0v. Charging the cell above 4.0v actually wears your cells out faster.
If you really want to learn how to treat LiPo batteries, go read some RC forums. Electric RC cars and planes have switched almost entirely to lithium chemistry, rather than nickel batteries. Since RC guys have to use generic chargers (the chargers aren't matched to the batteries like they are in cell phones and computers), they have to spend time learning how to properly charge and maintain their cells.
In fact, I had to take a training class from my model airplane club before I could use the club's airfield, due to the danger of fire if you mistreat a LiPo.