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Is it bad for a laptop battery, to keep the laptop plugged in after full charge?
My Laptop battery is at full charge, but when I am using it in my bedroom I just keep it plugged in so it won't use any of my battery life. Do you think it's bad for the battery to keep the laptop plugged in after the battery is fully charged? I have left my laptop plugged in for days already without using the battery, but I don't want to kill the battery by doing so. You know what I mean?
Thanks much!
I know what you mean and yes it will last longer if you remove it when it's charged.
It will hold 85% of it's charge for 4 months, so it will stay ready for use for a while.
When it stays connected to the charger, there is ac leakage current that gets through to the dc side of the charger that will degrade it over time.
Q What does Dell recommend for battery storage for a long period of time?
A When storing for more than 4 days these guidelines can better preserve the life of your battery:
Do not store batteries for long periods plugged into or attached to any power source. This includes AC adapters and laptop security carts plugged into an outlet.
Laptop batteries, including those stored in laptop systems, should maintain an Operational Storage Temperature of 0° to 35°C (32° to 95°F).
Batteries may be stored in the laptop or outside of the laptop.
Charge batteries before storing. The recommended charging time should not exceed 1 hour. Typically, this should charge the battery to between 80% and 100%. (Some discharge will take place over time. Stored batteries are expected to discharge 10-15% over a four month period, for your information.)
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September 24th, 2008 in
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