Service Manual

Battery

Lithium-ion battery precautions

CAUTION:

• Exercise caution when handling Lithium-ion batteries.

• Discharge the battery completely before removing it. Disconnect the AC power adapter from the system and operate

the computer solely on battery power—the battery is fully discharged when the computer no longer turns on when the

power button is pressed.

• Do not crush, drop, mutilate, or penetrate the battery with foreign objects.

• Do not expose the battery to high temperatures, or disassemble battery packs and cells.

• Do not apply pressure to the surface of the battery.

• Do not bend the battery.

• Do not use tools of any kind to pry on or against the battery.

• Ensure any screws during the servicing of this product are not lost or misplaced, to prevent accidental puncture or

damage to the battery and other system components.

• If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending, or

crushing a lithium-ion battery can be dangerous. In such an instance, contact Dell technical support for assistance. See

www.dell.com/contactdell.

• Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers.

Removing the battery

Prerequisites

1. Follow the procedure in Before working inside your computer.

2. Remove the base cover.

About this task

CAUTION: This computer is designed without an RTC coin cell-battery. After the battery is disconnected or when the

battery is fully discharged, an RTC reset cycle will occur when you restart the computer. The computer turns on and off

three times. An "Invalid Configuration" error message is displayed prompting you to enter the BIOS and configure the date

and time. The computer starts functioning normally after setting the date and time.

CAUTION: Disconnecting the battery cable resets the BIOS setup program’s settings to default. It is recommended that

you note the BIOS setup program’s settings before removing/disconnecting the battery.

The following image indicates the location of the battery and provides a visual representation of the removal procedure.