Acer Aspire E1-571G User Manual page 49

Important! Before removing the battery from the unit, connect the AC
adapter if you want to continue using your computer. Otherwise, turn
off the computer first.
To install a battery pack:
1 Align the battery with the open battery bay; make sure that the end with the
contacts will enter first, and that the top surface of the battery is facing up.
2 Slide the battery into the battery bay and gently push until the battery locks in
place.
To remove a battery pack:
1 Slide the battery release latch to release the battery.
2 Pull the battery from the battery bay.
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