I have two power adapters replaced already. When starting from cold power up, it displays a message: "Alert! A 3W AC power adapter has been detected, which is less than the recommended Latitude xx 23W AC adapter originally shipped. This will increase the time to charge the battery ...." I was told to only charge up the tablet and then unplug the charger. If the charger is connected to the tablet continuously the charger will be damaged as indicated above. It seems it is rather inconvenient to have to remember to disconnect the charger once the tablet is fully charged. Any one has similar experience?