Battery Driver for R51E

[fuligin]

Hi everyone, I just did a new clean installation of xp on my system, and for some reason windows cant detect my battery driver which is a Sanyo.
I have gone to thinkpads support site and run Battery Thinkpad power manager and driver, yet it still wont pick up.
Does anyone know where i can get this driver from?
Additionally i ran the software and program update and still no luck.