I have a relatively new (<1yr.) Dell Inspiron 15 laptop, which stays plugged in all the time. It's connected to a flatscreen monitor via HDMI & I keep the lid shut, so that screen's off.
Yesterday I noticed after I shut it down that the 'charging' LED was lit after shutdown, so I turned it back on to see why. The battery was at 98% charge & said it would be 5 minutes before fully charged.
While I was using it throughout the day, it was doing a 'full' antivirus scan, & I was watching Netflix. Nothing draining really.
I don't understand how the battery could have been draining while it was plugged in. Can anybody offer an explanation?
Thanks
Answer
Latest hardwares has this feature where it shuts the power supply to the battery when it is full and recharges it once it reaches a lower point. This is to avoid overcharging (not exactly, due to heating problem and other sort). Can't quite get the name of the feature though. This was a problem during earlier days, that is why people still say don't keep the laptop or mobile always plugged, that it might destroy the battery. But this has long since been solved using this feature. Will post if I find some articles on it.
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