- Notes, cautions, and warnings
- Working on your computer
- Removing and installing components
- Software
- BIOS setup
- Troubleshooting
- Handling swollen rechargeable Li-ion batteries
- Dell SupportAssist Pre-boot System Performance Check diagnostics
- Built-in self-test (BIST)
- System-diagnostic lights
- Recovering the operating system
- Real-Time Clock (RTC Reset)
- Backup media and recovery options
- Wi-Fi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell
Latitude 7420/Latitude 7420 2-in-1 Service Manual
Removing the 3-cell battery
Prerequisites
- Follow the procedure in before working inside your computer.
- Remove the microSD card.
- Remove the base cover.
NOTE:If the battery is disconnected from system board, there is delay during computer boot as the computer undergoes RTC (Real Time Clock) reset.
About this task
The following images indicate the location of the battery and provide a visual representation of the removal procedure.
Steps
- Disconnect the battery cable from the system board.
- Disconnect the speaker cable from the speaker board and release the speaker cable from the routing guides over the upper right side of the battery.
- Remove the single (M2.5x4) screw and loosen the four captive screws that secure the battery to the computer.
- Lift and remove the battery from the computer.
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