Can't see anything with that picture, but if the battery isn't clearly visible, then it's probably under one of the PCI cards. (lower right in picture)
You may need to remove one or both of the cards to get to it.
Can't see anything with that picture, but if the battery isn't clearly visible, then it's probably under one of the PCI cards. (lower right in picture)
You may need to remove one or both of the cards to get to it.