My laptop's battery won't charge past it's current percentage.Two days ago I noticed that it won't charge past 97% and after restarting it did reach to 100% but next day again I noticed it won't go past 71% then 64% and today it won"t go past 50% I checked the health of the battery and it is working normal. This is my new battery purchased few months ago I think that battery is fine but still I have my doubts. When I plug in the charger it works for few seconds and then shows not charging but it does charge when the battery is low and then stops at specific percentage. What can I do before taking this to the shop? What could be the problem here?