CAUTION: Using an incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell. The battery is designed to work with your Dell™ computer. Do not use a battery from other computers with your computer.

NOTICE: You must remove all external cables from the computer to avoid possible connector damage.

To remove the battery:

1.If the computer is connected to a docking device (docked), undock it. See the documentation that came with your docking device for instructions.

2.Ensure that the computer is turned off.

3.Slide the two battery-bay release latches on the bottom of the computer until the latches click.

4.Slide the battery away from the computer.

1

battery

2

battery-bay release latches (2)

To replace the battery, place the battery in the bay and press down until the battery-bay latch release clicks.

Storing a Battery

Remove the battery when you store your computer for an extended period of time. A battery discharges during prolonged storage. After a long storage period, recharge the battery fully before you use it (see Charging the Battery).

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Dell D420 specifications Storing a Battery