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Should laptops remain plugged in when their battery is 100% charged?

Is there any problem if I left the charger connected to the laptop after full charging? And if there is, How can I deal with that to not harm the battery?

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migrated from Oct 4 '12 at 19:09

This question came from our site for professional and enthusiast programmers.

marked as duplicate by Indrek, MaQleod, soandos, ChrisF, Synetech Oct 4 '12 at 22:28

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Not programming related. – Paul Tomblin Oct 4 '12 at 19:05
May be suited for SuperUser, but not SO... – poplitea Oct 4 '12 at 19:06
This is off topic, but here is some information for you. – NominSim Oct 4 '12 at 19:07
Duplicate of and a bunch of others. – Indrek Oct 4 '12 at 19:19
Yeah, there are at least a couple of duplicates, but no single one addresses all the issues, that I can see. – Daniel R Hicks Oct 4 '12 at 20:06

2 Answers 2

up vote 0 down vote accepted

Laptop chargers pretty much universally turn off (or go into low "trickle" mode) when the battery is fully charged.

There is a problem, however, that your typical Li-ion laptop battery "doesn't like" being fully charged -- the overall battery life (not the "life" of a single charge) will be extended if only charged to 60-80%. Some laptops have a setting to enable this lower-level charge (for those that hardly ever use the laptop on battery only), but many unfortunately do not.

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Read the topics in this site:

Usually the battery stop charging after completion. So normally you can leave it. Actually, I think the charge/discharge process is what decrease the batteries performance.

You have more info here

Hope it helps.

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