Re: Laptop Battery Question

It's best to give the battery a bit of "exercise" every 2-3 months.

Don't run it down (or let it get run down) as low as 15%, that's too low. 25% would be a better number, but one advantage to charging it much more (and leaving it that way), even 100%, is that if you happen to completely forget about it, it will last longer (a LOT longer) than if you had let it continue to self discharge to destruction.


liu wrote:
On Jun 28, 1:43 am, "Val" <vma...@xxxxxxxxxxxxxxxxxxx> wrote:
valid concern.

If used mainly on AC, pull the battery out.

Val

"Scott" <wit...@xxxxxxxxxxxx> wrote in message

news:gs768357nn63fbv7erl976env3o7k2g80s@xxxxxxxxxx



I just got a new laptop about a week ago. My concern is this. I am
mostly using it as another desktop. The battery hardly ever gets used.
I leave the laptop plugged into wall outlet all the time. So I guess
the battery is constantly getting a charge. Should i remove the
battery or just leave it in while laptop is plugged into outlet?
I'm just concerned that I will mess up my battery, and not sure what
proper methods I should be following.- Hide quoted text -

After some research, I came to the following conclusion:
1) Don't use it when you don't need it.
2) Keep it charged at 50% and store it away. Check every couple of
months to make sure it's not under 15%.

What I don't know is whether you should charge it (when charge is
<15%) to 100% and use it up to 50% or just stop when it reaches 50%.
Charge to 100%, you lose one cycle of the total charge cycle. Will
charging to 50% every time make the battery losing its total capacity
after a long time? I suspect that it will lose its capacity after 2 to
3 years no matter what.

Thanks for any suggestions,

liu

Reference:
http://www.laptopbattery.net/notebookbatteries_life.html
Remember that new laptop batteries generally arrive in a discharged
state; you must charge them up for at least four hours before their
first use. Keep your laptop battery cool, but do not put it in the
refrigerator or freezer Don't use the notebook battery if you don't
have to! Many people keep their laptop plugged in most of the time.
They can preserve their notebook battery life by storing the battery
outside the laptop in a cool place. Try to avoid running your laptop
battery all the way to zero Don't charge your notebook battery before
long periods of inactivity Much as we'd like to sell you more laptop
batteries, don't buy spare notebook batteries for later use. The
longer you hold them, the less useful life they provide

http://www.apple.com/batteries/notebooks.html
If you don't plan on using your notebook for more than six months,
Apple recommends that you remove and store the battery with a 50%
charge. If you store a battery when it's fully discharged, it could
fall into a deep discharge state, which renders it incapable of
holding any charge. Conversely, if you store it fully charged for an
extended period of time, the battery may experience some loss of
battery capacity, meaning it will have a shorter life. Be sure to
store the ejected battery at the proper temperature.


.

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