I am facing some charging issue on my meizu m6 note.
When it turns on if i connected it to a charger it charged but after 15-20 mints later it disconnected and always shows charging icon on the top bar.

But when it turn off it shows to connect the charger and if i connect it it charged up.

what is the solution?
what should i do?

Phone is not rooted but root permission enabled in setting.
.