I have changed the battery, but there is no influence
in the charger in the off and on condition it continues to decline

excuse me I am a blackview BV8000 user, and I have a problem with my cellphone battery when the charger is turned on, my cellphone is not charged, and when it turns off it can be charged and it is also very long (1% / 4 hours) but my cellphone is now totally dead and can't be charged, I have replace...