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Posts: 53
Registered: ‎12-31-2011
Location: United States
Message 1 of 7 (400 Views)

Did I harm my battery?

I bought a T500 a month ago, with two power supplies -- one for office, the other for home.  I took the battery out and stored it in a closet.  As it's heavy, doing this made the commute lighter.  Now I learn that I was supposed to keep my battery installed forever and ever.  Did I harm my battery, keeping it in a closet for a month?  What happens to people who go away on a long vacation and turn their laptop off while they are away?  Does that ruin the battery?

Community Moderator
Posts: 5,509
Registered: ‎01-01-2010
Location: US
Message 2 of 7 (395 Views)

Re: Did I harm my battery?

Soring a charged battery for a month will not hurt it, unless it was "near death" already.


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.
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Posts: 30
Registered: ‎12-14-2011
Location: France
Message 3 of 7 (387 Views)

Re: Did I harm my battery?

The battery doesn't like when it is overcharged (always keep charged at 100%) or completely dried out (when the battery is used till 0%).
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My TP : T410s i5, SSD, RAM 6Gb, Intel HD, Centrino N6300, Win 7 Ultimate 64
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Posts: 999
Registered: ‎01-06-2011
Location: Sacramento, CA
Message 4 of 7 (359 Views)

Re: Did I harm my battery?


Kuturgan wrote:
The battery doesn't like when it is overcharged (always keep charged at 100%) or completely dried out (when the battery is used till 0%).

Fud. Keeping it in the laptop and always charged to 100% is not going to hurt it. And lithium ion laptop batteries never drain all the way to 0%. If they did you would be unable to charge it back up (there is a protection circuit that prevents the battery from fully discharging).

Serial Port
Posts: 55
Registered: ‎08-02-2011
Location: australia
Message 5 of 7 (343 Views)

Re: Did I harm my battery?

Yes nowadays the circuitry wont let a battery overcharge nor fully discharge.

What i've read, is that ideally you should use the battery regularly, but if you are really not going to use the battery, it should be discharged to around 40 - 50% capacity for strorage.

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Posts: 9,240
Registered: ‎12-26-2009
Location: US
Message 6 of 7 (339 Views)

Re: Did I harm my battery?

I suppose you could consider battery wear as a function of charge level. It wears out faster near zero and near 100%; not necessarily killing it, but doing [marginally?] more damage than would be done if it was left in a medium state.
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Serial Port
Posts: 55
Registered: ‎08-02-2011
Location: australia
Message 7 of 7 (281 Views)

Re: Did I harm my battery?

These might be helpful for you from the Knowledgebase:

 

Should I run with my battery in or out?

 

How can I increase battery life?

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