I recently got a Dell Inspiron 6400. I want to know the ideal lappy charging habits. As of now I just charge when my battery is around 10%, otherwise I dont charge and run without the AC Adapter. So can I continue to do it and charge whenever it's around 10% or while playing games or watching movies? Also I want to know some battery saving techniques..now I: - Charge only it's around 10% - switch off BT/Wifi when not used - decrease the screen brightness - use external usb drives when needed, otherwise I remove them from the slot Any other tips?