R61 battery defect?

[mR_PiNk]

Hi,

I just purchased a Thinkpad R61 (T8300, 2GB Memory, Vista Home Premium) and I'm totally happy so far. But the battery has a very strange behavior: When I charge it to 100% and remove the AC Adapter everything seems to be fine. The Battery status is at 100% and ~4 hours remaining. But when I charge the battery to 100%, remove it from the laptop, leave it over night out of the laptop and start the laptop with battery the next morning, I only have 85% battery with a little bit more than 3 hours left. I have to add, that I'm currently living in Illinois where it is very cold at the moment and every time that happened, I transported the battery in the cold (for 10 to 15 minutes). What is going on there? Is this a Windows Vista issue or is my battery eventually defect? I'm very thankful for your help.

~mR_PiNk

[csloth]

I reckon batteries tend to have a strange behaviour. Mine sometimes drops from 10% to 4% in a second, but it doesn't happen everytime...

I'm no expert, but to me it sounds like one of the cells in your battery might be defect and that's why it's discharging when it's not being used. However, if that's the case it should happen everytime you unplug the ac adapter, regardless if you remove the battery from the laptop or not.... As far as I know.

Have you checked the status of your battery in the Power Manager?

[ryengineer]

The following thread would give some answers and provide you with some possible solutions:

Hibernation draws battery power?!.

[mR_PiNk]

I was wrong. The battery drain happens if the battery is still built in and I hibernate the laptop. I'm using Windows Vista: A solution for my problem was to deactivate "allow this device to wake computer" for all devices in the device manager. Now there is now battery drain upon hibernating anymore.