Dell Precision M6700 (Mid 2012) - Manual (Page 10)

3. Flip and remove the battery from the computer.
Installing the Battery
1. Slide the battery into its slot until it clicks into place.
2. Follow the procedures in After Working Inside Your Computer.
Removing the Subscriber Identity Module (SIM) Card
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the battery.
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