Sony VPCSE23FX - Manual (Page 28)

28 n N
Getting Started >
Using the Battery Pack
✍
If your computer does not recognize the battery pack, turn off your computer and push and hold the battery off button for about three seconds with a
thin, straight object (such as a paper clip). If this does not solve the problem, remove the battery pack and install it once again.
If an extended battery pack is attached to the computer, turn off the computer and remove the extended battery pack. If this does not solve the problem,
push and hold the battery off button for about three seconds. If the problem persists, remove both battery packs and install them once again.
!
This computer is designed to operate only with genuine Sony battery packs.