Fuze Battery Life and Good Battery Practices?

Sansa fuze is my 3rd Sansa mp3 player.  I don’t like having to charge connected to my PC.  I purchased a charger by Griffin.  It has a connection for the IPOD that is removable.  Just remove that and the USB cable for the sansa fuze fits. Now you can charge anywhere that has an electricial outlook. The bonus is that you can listen to the player while it is charging.