Is it ok to keep my laptop plugged even if my battery is full?

Answer 1

Best Answer - Chosen by Asker

It depends on the type of battery.

If it is lithium ion -- which most laptop batteries sold in the last 5 years are -- there is no advantage to unplugging it or doing a deep discharge.

The idea that you need to avoid over-charging and re-charging comes from older generation NiCad batteries. These batteries had the type of memory effects people are referring to. But they were phased out and only the oldest laptops are using them any more.

Today's Lithium Ion -- Li-On --- batteries do wear out after a period of year. It makes no difference if you are constantly charged or are recycling them.

Source(s):

http://electronics.howstuffworks.com/lit…

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Asker's Comment:

thanks so much. great help ^+^

Answer 2

um.. lol
actually if you bought 2 identical laptops at once and constantly kept one plugged and unplugged the other one when it was full... you would find that the one you unplug after it's full has a longer battery life over time

leaving it plugged in sometimes by accident (ie if you fall asleep with it plugged in or something) is acceptable, but to prolong your battery life you should try to unplug it when it's full. same goes for cellphones, cordless phones, digital camera batteries, etc..

Source(s):

dad's an electrical engineer

Answer 3

yes, it's fine. newer batteries are smart enough to know when they are fully charged and will switch over to the current coming from the wall. the only time you have to be careful is if you're using a 3rd party wall charger. like if you lost the original. some of those aren't tested to turn off the juice when the battery is full and you can over charge and wear out the battery faster. but otherwise you'll be fine. i do it all the time with no ill effects.

Answer 4

Yep. Your laptop will run of of the power plug just fine. Some even run faster because when you use battery power the system slows down to try not to consume so much power.

That guy is wrong.... you cant over charge a laptop battery... it has a controller that wont allow that to happen

Source(s):

10 years of computer experience

Answer 5

Yep, that's fine. It is better to keep your laptop plugged in, because using the battery too much actually ruins it. Eventually, if you keep charging and using the battery, it won't hold as much as it used to, and your laptop will die sooner.

Source(s):

Superfantabulous brain

Answer 6

No, at least not for too long. i would recommend to try and not overcharge as it will eventually deplete your batteries overall capacity.

Those who stated above that its "fine" and "ok" are completly WRONG. After some time the overall capacity will be much less. Trust me.

Source(s):

me

Answer 7

Yes, I'm pretty sure it is--I do it all the time! However if you want to keep the battery in good condition, take it out, but use it every now and again to make sure it still works OK. But there shouldn't be any problems anyway, just what you prefer doing.

Answer 8

Wouldn't this cause battery drain? I don't think its a good idea for electronics like cell phones or laptops

Source(s):

I used to do this with my cell phone and it caused the life of my battery to go down quite substantially

Answer 9

no it will eventually cause you computer to have a shorten battery. this will cause you to have less power will working from your computer while its off hte charger. this also dose this to phones.

Answer 10

yes it automatically stops charging the battery so no damage will occur Although it is a fire hazards while pluged in so best not to.

Answer 11

Yes, it is best to keep your batter at 90% or greater. Once a week/month you should run your battery down to the reserve battery.

Answer 12

It can theoretically overcharge the battery, but your laptop probably has something that prevents that.

Answer 13

Yes, it is fine. The battery will only take in as much power it needs, it will not overcharge.

Answer 14

no because your batter will over charge (yes its possible) then the cells inside will not support as much charge as you did before

Answer 15

I do, but once in a while you should use it on battery, at least once a month.

Answer 16

Yeah of course. Mine is fully charged right now and I'm still using in plugged in.

Answer 17

You should remove the battery to prolong its life.

Answer 18

please refer to your laptop manual.

Answer 19

No. My girlfriend did this and it destroyed her battery!

Answer 20

yeah i do it all thee time because once i unplug my laptop it run out of batteries with in 5 minuites

Answer 21

This can start a fire.

Source(s):

Burnt off eyebrows

Answer 22

Yupp its just fine but it doesnt mean it will hold more charge

Answer 23

It'f ine. It doesn't do anything to it.

Answer 24

Yes it is

Answer 25

Yeah! is it???

Answer 26

yes