Introduction
How to disconnect the battery in your Dell Latitude 4790 laptop. This should be done before all major repairs.
Tools
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Insert the long side of an opening pick between the top right corner of the back cover and frame.
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Pry the back cover up to release the clips securing the top right corner.
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Slide the opening pick down the right edge and around the bottom right corner to release the clips.
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Slide the opening pick along the front edge and up to the top left corner to release the remaining clips securing the back cover.
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Conclusion
To reassemble your device, follow these instructions in reverse order.