Introdução
If the device no longer holds a charge or powers off unexpectedly, the battery may need to be replaced. Over time, the battery life decreases after long-term use. First, check that the power cord is not broken by plugging it into different outlets. If the battery of the Dell Latitude 3390 2-in-1 still isn't charging, it has died and will need to be removed and replaced with a new one. This guide will show you how to safely remove the old battery and install a new one to restore proper performance.
Ferramentas
Peças
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Flip the laptop over so that the bottom side is facing up. Place it on a soft, static free surface to prevent damage.
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Use a Phillips #0 screwdriver to carefully remove all seven 7 mm-long screws securing the back cover.
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Insert an opening tool into the seam between the back cover and chassis.
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Pry around the perimeter of the back cover until it fully releases.
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Lift off the back cover slowly and set it aside.
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Disconnect the battery from the motherboard by gently pulling the connector straight out of its socket.
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Carefully lift out the old battery from its compartment, ensuring that no cables or connectors are pulled or damaged.
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To reassemble your device, follow the above steps in reverse order.
For optimal performance, after completing this guide, calibrate your newly installed battery.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.
