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Installing base cover
1 Align the base cover tabs to the slots on the edges of the system.
2 Press the edges of the cover until it clicks into place.
3 To secure the base cover to the system, tighten the eight (M2.5 x 6.0) captive screws .
Remember: Exercise caution when tightening the screws. Angle the screw driver to match the head of the screw to avoid a
possible stripped screw head.
4 Follow the procedure in After working inside your computer.
Battery
Lithium-ion battery precautions
CAUTION:
Exercise caution when handling Lithium-ion batteries.
Discharge the battery as much as possible before removing it from the system. This can be done by disconnecting the AC adapter
from the system to allow the battery to drain.
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.
Do not bend the battery.
Do not use tools of any kind to pry on or against the battery.
If a battery gets stuck in a device as a result of swelling, do not try to free it as puncturing, bending, or crushing a Lithium-ion
battery can be dangerous. In such an instance, the entire system should be replaced. Contact https://www.dell.com/support for
assistance and further instructions.
Always purchase genuine batteries from https://www.dell.com or authorized Dell partners and re-sellers.
Removing battery
1 Follow the procedure in Before working inside your computer.
2 Remove the base cover.
3 To remove the battery:
a Disconnect the battery cable from the connector on the system board [1].
NOTE
: The Latitude 7290 features either a 3-cell or 4-cell battery, which needs to be removed before replacing the
customer replaceable unit (CRU) parts. Therefore, when performing any disassembly procedure, the battery
connection must be disconnected immediately after removing the bottom cover. This procedure is required to
disconnect all power sources from the system and to prevent the system from accidentally switching on and shorting
the components.
b Remove the M2.0 x 5.0 screw that secures the battery to the computer [2].
NOTE
: A 3-cell battery has a single screw, and a 4-cell battery has two screws. Hence, the image displayed below is a
3-cell battery.
c Lift the battery from the system [3].
Removing and installing components
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