Why my s6 edge plus won't turn on?

A

AC Question

Hello guys
I bought samsung galaxy s6 edge plus 9 days ago from someone over the internet without box pr warrenty it was working perfectly for 8 days until yesterday when i consumed the battery until i reached 0% and it turnned off it tried to charge it with a wall charger at first it was charging i left it for 20 minutes and it still at 0% i tried to turn it on but when i did it was at s6+ plus screen and then it died,no led light no screen nothing,i tried to put it on charge over the night and it was useless
I have to mention that i dont have the original charger but the 2amp one from samsung i am not sure if it a fake charger or not but it was warking good while i was using the phone.