iPhone 5s Battery Percentage wrong

[KingBuick]

The battery percentage on my 5s is wrong a lot of the time. It went down to 55%, and when I started charging it it went to 66% instantly. Is there a fix for this? My 5s is running iOS 8, if that helps.

 

[pr1nce]

Does a reboot work?

 

[KingBuick]

Does a reboot work?

Do you mean a hard reset (Home button and power button at the same time)?

 

[pr1nce]

Do you mean a hard reset (Home button and power button at the same time)?

Yes

 

[Ventud]

You could try to calibrate iPhone battery. You've to down full battery to 0 or until you cell get turn off. After, you have to change it until 100%