Hi, folks. A friend of mine call me for help. His T41 do not charge the battery at all. Feeling that the problem was related with the battery (he uses to work with the laptop connected to the mains, but without taking out the battery) he ordered a new one via eBay.
Once the new one came, he inserted in the laptop and found that the new one, even having 75% of charge, didn't charge either. He was blaming the seller and in the way of returning the battery to him. At this point he called me and I asked him for doing some tests before returning the battery and he agreed. After these tests done, I came to the position that the new battery was OK (you will see) and that the problem could be in his T41, but not being able to go further I now ask you for some help in order to be able to do a better diagnose.
Here is what I did:
1.- I came with my T42 and put the NEW battery in my T42, and it began to charge. So, the new battery seems to be OK.
2.- I put my battery in his T41 and it didn't charge. So, it seems to be a problem in his T41
3.- I measured the voltages between the different connectors of the battery IN the T41 and IN the T42 and all of them were equal, so, it seems NOT to be a problem of the T41 hardware.
4.- I found that even disconnecting the mains adapter and leaving the T41 with only battery, the battery icons were always saying "charging - 70%" and with the icon of the main power adaptor connected. So I felt it could be a problem of the power management driver.
5.- I tried to download the last PM driver from Lenovo web site (quite different of the IBM used to be
), I did it with the driver, the special driver for XP and the Battery Maximizer User Interface, tried to install all of them but the driver installation told me that there was a more recent version installed, so I canceled the driver installation.
6.- In one of these installations and reboots the icon with "battery like" icon that indicates in green the percentage of battery charge was gone out.
Then , my questions now:
a.- Could I be right in thinking that the problem could be more software/driver related than Hardware related? Is any other way to more accurately confirm it?
b.- Where could I find the most up-to-date power management driver to install? Should I install it even over the "more recent version is installed" message? Which drivers/sfotware should I really install?
c.- I was trying to find a software similar to the Power Management PWMUI.exe I have installed in my T42 with Windows 7 (6ju410ww - it seems to be Win7 only), does it exists something similar in functionalities for the Windows XP SP3 that my friend has in his T41? Where could I find it?
The details of the laptop of my friend are:
T41 - 2373-2FG
Windows XP SP3
Thanks for any help.