Battery charge too fast?

[AC Question]

I connected my Samsung Galaxy A5 2016 to my laptop with usb cable to transfer some pictures to the computer. It had 93% when i did it and after minute or two my phone said its fully charged 100%. How is this even possible?

 

[BrutalhonestyM]

Have you tried charging it on the wall? Also do you notice that after charging it to 100%, the battery dies quickly?