Battery; Lithium-Ion Battery Precautions - Dell Inspiron 15 3520 Service Manual

Steps
1. Connect the battery cable to the connector on the system board.
2. Place and snap the base cover into place on the palm-rest and keyboard assembly.
3. Tighten the two captive screws that secure the base cover to the palm-rest and keyboard assembly.
4. Replace the six screws (M2x5) that secure the base cover to the palm-rest and keyboard assembly.
Next steps
1. Install the SD card.
2. Follow the procedure in

Battery

Lithium-ion battery precautions

CAUTION:
● Exercise caution when handling Lithium-ion batteries.
● Discharge the battery completely before removing it. Disconnect the AC power adapter from the system and
operate the computer solely on battery power—the battery is fully discharged when the computer no longer
turns on when the power button is pressed.
● Do not crush, drop, mutilate, or penetrate the battery with foreign objects.
● Do not expose the battery to high temperatures, or disassemble battery packs and cells.
● Do not apply pressure to the surface of the battery.
After working inside your computer.
Removing and installing components 21