Introduction
This guide will serve as a prerequisite for further guides to ensure workbench safety for the Garmin nüvi 3590 LMT.
WARNING: Use caution when dealing with batteries and dispose of properly. DO NOT PUNCTURE.
Tools
Parts
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Use the plastic opening tool to separate the tabs on the black back cover of the device by leveraging the tool against the frame around the perimeter of the device.
 
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Using the plastic spudger, carefully remove the white tab connected to the battery from the device by pulling the tab in the opposite direction from which it is connected.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.