Portege Z930 drains battery even when power off

I noticed that if I unplug the laptop during night with the battery at full charge, after 8 hours it has lost 4% of charge after a complete power off...
That's crazy!!
Is this the normal behaviour?
Or, can I modify something in the BIOS in order to reduce this power drain?
da

Dude disabling the Sleep / Charge and disabling Wake Up on LAN in BIOS and in the device manager (LAN card -> Properties -> Advanced tab) should help.
Dont forget to save the BIOS after some changes has been made.
If you would read some posting about the same theme, you will find many reports that this helped other community members.

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Hi
Believe me it is normal. At my notebook happened the same thing. Over night there is deficit of 3 5% of battery capacity. Dont worry about it. Only what you can do is to do something about maximizing battery life.
For Nickel Metal Hydride batteries (NiMH) the battery will better hold a charge if allowed to discharge at least once a week. The chemical reactions that correspond to charge and discharge in a rechargeable battery should occur to obtain the maximum number of charge/discharge cycles in the battery.
It is not necessary to remove the battery from the computer during the week when it is on AC power.
Google a little bit around. You can find a lot of useful information about notebook-battery.
On this forum you can find similar discussions and many users have reported about this known issue. I just hope that you have charged the battery on the right way like described in users manuals.
Bye

Portege Z930 drains battery even when power off

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