Yes but you will reduce its life a little if you usually just leave the laptop parked at home. For maximum life of the battery (not run time, but the time until you need a new battery) you can remove the battery and store it if you will not be using it for a week or more. Run it down to 40-60% and store it in a cool dark dry place.
Every time you turn the laptop off and back on the battery drains just a little and then it charges back up when you turn it back on. The smart chip counts that as a cycle and you only get so many cycles.
If you leave the AC adapter plugged in with the laptop off it will draw a very small trickle charge through the adapter, not enough to cause any harm. Electricity requires a complete circuit and if the laptop is not drawing much power, the adapter is not working hard. By this logic we would unplug a desktop computer, even when the computer is off, so the internal power supply would last longer. Not necessary and nobody does it.
Since some years Ago I leave my HP laptops (and Mac) all the time connected for weeks in my Office and at home and I have not issues with the battery or the laptop. The battery life is normal no less no more...
Para mis amigos en español.
Dejar la laptop conectada todo el tiempo a la electricidad, Yo dejo mis laptops (HP y MAc) conectadas todo el tiempo y no he tenido ningùn problema, no se reduce el tiempo de vida de la baterìa ni tiene ningùn problema la computadora
regards / saludos
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