Mis Functioning

[GVKRISHNA]

My Samsung galaxy on nxt is mis functioning. The battery % is showing / displaying peculiarly when I connect to different chargers. When I connect to USB, it shows 33% but same time when I connect to other charger it displays 63%. Why this abnormal behaviour? 

[Amandeep]

*#0228#

try this code to reset battery level.after this completely discharge the battery to zero and then charge to full