Apple's laptop batteries in 2008 MacBook models have an independent microcontroller in them, which enables apple to manage it at a much more advanced level.
That generation of laptops can detect a problem with the battery much earlier (e.g. It can warn the user a year before the battery starts to swell. Been there, seen that). This knowledge is the basis of apple's battery technology that we see on their mobiles (iOS and macOS) today.
IIRC the password on these things were set to a default one and a PoC exploit was written for that platform.
That generation of laptops can detect a problem with the battery much earlier (e.g. It can warn the user a year before the battery starts to swell. Been there, seen that). This knowledge is the basis of apple's battery technology that we see on their mobiles (iOS and macOS) today.
IIRC the password on these things were set to a default one and a PoC exploit was written for that platform.