Introduzione
The battery is the power source for the device, without it the device is useless. This guide will help you replace it properly.
Strumenti
Ricambi
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            With the cover removed, unscrew all four of the 4.75mm long screws using the Phillips #0 screwdriver. 
 
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            Remove the two rubber feet with arrows by them on the back side to uncover two screws. 
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            Unscrew the four silver 4.4mm long screws near the hard drive. 
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            Unscrew the remaining nine black 6.5mm long screws. Then remove the back casing using a pry tool if needed. 
 
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            Use the screwdriver to remove the four 3.5mm long screws holding the battery in place. Then carefully pull the battery's connector cable out to remove the battery. 
 
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                            Conclusione
                          
                          To reassemble your device, follow these instructions in reverse order.