Iphone5 shuts down suddenly on battery less than 50%
My Iphone5 shuts down suddenly while using camera or calls when remaining battery is less than 50%, It won't get power on unless connected to charger and show empty battery sign. Once connected to the charger and the phone is powered on, it shows the same battery percentage what was prior to shutting down. Any help on this?
iPhone 5, iOS 8.3