Dell Latitude E6430s (Mid 2012) - Manual (Page 13)

3. 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.
3. Press in on the SIM card to release it from the computer.
13