i have CoreDuo T2400 processor
I have the same HP530 with battery meter I used AppleACPIBatteryManager_b13 kext find what you need in this post.
I hope this helps you!!
Just a quick question, do you have both cores working? If so, how did you fix it?
I have the same processor T2400 and can only have a stable osx86mac by using the cpus=1 flag at darwin boot.