display brightness decreases to conserve battery life. The battery in the computer slowly discharges when the computer is off and unplugged from external power.

Computer battery life varies, depending on power management settings, programs running on the computer, display brightness, external devices connected to the computer, and other factors.

Removing a user-replaceable battery

WARNING! To reduce potential safety issues, use only the user-replaceable battery provided with the computer, a replacement battery provided by HP, or a compatible battery purchased from HP.

CAUTION: Removing a user-replaceable battery that is the sole power source for the computer can cause loss of information. To prevent loss of information, save your work or shut down the computer through Windows before removing the battery.

1.Slide the battery lock latch (1), and then slide the battery release latch (2) to release the battery.

2.Remove the battery (3) from the computer.

Finding battery information

To monitor the status of your battery, or if the battery is no longer holding a charge, run Battery Check in HP Support Assistant. To access battery information, from the Start screen, type support, select

the HP Support Assistant app, and then select Battery and performance.

HP Support Assistant provides the following tools and information about the battery:

Battery test

Information on battery types, specifications, life cycles, and capacity

Running on battery power 41

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HP E2S18UAABA manual Removing a user-replaceable battery, Finding battery information