Introduction
If your ASUS VivoBook S400C has an extremely short battery life or does not hold a charge, use this guide to replace the battery.
Over time, a battery may degrade in quality and fail to hold a long charge or take a charge at all. Before using this guide, check that no other factors are preventing a charge.
Before beginning, make sure your laptop is powered off and disconnected from any external power source. Take extra care if your battery is swollen .
Tools
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            With a Phillips #0 screwdriver, remove the four 5.7 mm screws holding the battery to the laptop. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.