Dell Latitude E6420 ATG (Early 2011) - Manual (Page 45)

Coin-Cell Battery
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Removing the Coin-Cell Battery
1. Follow the procedures in Before Working on Your Computer .
2. Remove the ATG Handle (only for E6420 ATG systems).
3. Remove the ATG Port Cover (only for E6420 ATG systems).
4. Remove the Battery .
5. Remove the SD Card .
6. Remove the Base Cover .
7. Disconnect any antennas routed over the coin cell battery.
8. Disconnect the coin-cell battery cable from the system board.
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