If your laptop battery fails or no longer holds a sufficient charge, you can easily replace it. Follow these steps:
1- Turn off your laptop and disconnect the AC adapter.
2- Release the latch or other attachment devices that hold your battery in place.
3 – Slide the old battery out of its compartment or storage bay.
4- Avoid touching the contacts on the battery itself or inside the bay; the oils on your fingertips could reduce the conductivity of the battery.
5- Take the replacement battery out of the box.
6- Slide it into the notch or bay.
7- Close the safety latch to lock it into place.
8- Reconnect the AC adapter and give the battery a full charge.