Asus ZenFone 5 Battery Replacement
If your Asus ZenFone 5 has lost its ability to hold a charge, you most likely have a dead battery, which requires replacement.
A functional battery provides power to your cellphone. Eventually, cellphone batteries will rapidly drain after going through a repeated amount of charge cycles. If you notice that your charged battery is draining more quickly than usual, consider calibrating your battery to determine an accurate charging capacity. If you continue to notice significant drops in battery percentage, you should replace your battery.
Make sure to power down your device before you begin. Use ESD safe tools when accessing the battery. ESD safe tools greatly reduce the risk puncturing the battery. A punctured battery can cause a dangerous fire. If your battery is swollen, take appropriate precautions.