Sometimes I unplug my Thinkpad laptop from its AC/DC power supply adapter and keep the adapter connected to the power socket. Are there any possible negative consequences? Some ideas I was thinking about:
- Clearly, it consumes electricity even without any load. How much can it be it?
- The power adapter is simply operating longer, so it can age faster.
- Perhaps the power adapter isn't designed to operate without any load and so it can age faster, or even get eventually damaged?
- (Un)plugging the cable from the laptop with the adapter on can cause strain on the laptop circuitry (I don't know the proper English terminology - please feel free to correct). I was taught to always unplug/plug the power plug first/last for electronic devices so that the power adapter filters out any noise created by the contacts.
Is anything of these serious enough to be concerned? Are there other possible problems?