Problems with some Powerbook 15'' October 2005

It took us some times to ensure that it was not a single case.
Some PowerBooks 15" from the last revision, based on DDR2 SODIMM, have an annoying problem with their battery, it refuses to be loaded...
So it is impossible to use the PB as a mobile device, one need to have a power plug.
Apple does not know yet where the problem is coming from; but it could be due to an error in the power management firmware located in the battery; and it seems not to be the case anymore in the manufacturing process. The solution would then be to upgrade the battery firmware.
If you are facing such a problem, please let us know the serial number of both your computer and your battery.