Introduction
If you have a faulty battery on a ACER Aspire 7750G 6645 then this guide will help you remove the faulty battery and replace it with a working battery. Once this process is completed it is recommended that the laptop is plugged in for a couple of hours to allow the new battery to fully charge.
Tools
Parts
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            The battery is on the back of the device, on the underside of the laptop. 
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            Push the switch over to unlock the battery. You may need a pen/spudger to push the lock. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.