Dell Latitude 7210 2-in-1 - Switch off the battery power

2. Connect any external devices, peripherals, or cables you removed before working on your computer.
3. Replace any media cards, discs, or any other parts that you removed before working on your computer.
4. Connect your computer and all attached devices to their electrical outlets.
5. Turn on your computer.
Switch off the battery power
The battery cable connector is located in a very tight space which requires removal of the battery screws to disconnect; there is
a battery switch to the left of the battery cable, which the technician must flip to the OFF position to cut-off power during any
replacement procedures.
Figure 1. Switch OFF battery power
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Working on your computer