Before starting with screwdrivers it's better to remove first the battery.

It's like nowadays notebooks, move the slide-button and pull the battery.

The battery-pack contains 9 batteries, as usual 1.2v each 1200mAh; that makes 10.8v, enough to power the HDD, the PCMCIA, the screen and the processor at the same time.

The model number is: PA2497U