8.Insert the replacement battery into the compartment as far as it will go and slide it to the right until it snaps into place.
Note
When you replace the battery, make sure the new one is fully charged; otherwise you may run out of power unexpectedly.
Recharging the Battery
The battery that comes with your system is rechargeable. You may need to charge the battery before using it for the first time, and you must charge it when it runs out of power.
To charge the battery, leave it in the computer. Connect the AC adapter to the computer and to an electrical outlet. The computer automatically charges the battery whenever the AC adapter is attached.
The charging light on the AC adapter blinks while the battery is charging. When the battery is completely charged, the light stays on.