moto g4 Automatically shuttling down

[Samruddh]

Battery draining much faster than before.. at certain% of battery the phone automatically shuts down itself..and shows no charge.after plugging in.it shows 46% .. I'm getting sick of this issue..everytime i charge upto 100% within 20 mins the phone gets shut down.. battery replacement is not the solution.pls help

 

[HeethJain21]

Did you try changing the ROM or reflashing the current ROM?
If the issue is still present then it is a hardware issue, and battery replacement is the solution.