Hey guys i just had this weird problem with my mbp, it wont start/boot up unless i connect the adapter, the battery show like 96% but when i disconnect the adapter the computer jusr died on me, heh!! i tried to reset the pram and remove the battery, hold the power button for like 5 secs like in apple support page but it doesnt help, still i have to use the adapter in order to use the mbp, any ideas??

15"
2.16 GHz Intel Core Duo
2GB MHz

Call Apple get the battery replaced.

I'd try resetting the SMC

http://docs.info.apple.com/article.html?artnum=303319

You can also boot into open firmware by holding down

aption + apple + o + f from a COLD start. Once you are there at the command line type in reset-all and press return. Aside from the SMC reset you can take out the battery and dc the ac - and allow it to rest for an hour to discharge completely.

Resetting the open firmware will preclude needing to zap the PRAM also.

This is definitely a PMU/firmware corruption issue - try the steps listed and let us know.

Intel Macs don't have OpenFirmware...that command won't work.

http://docs.info.apple.com/article.html?artnum=303124