Note 5 Won't Charge, Won't turn on, and wont reboot. How to fix?

[AC Question]

I was browsing the internet on my phone last night and it just randomly black screened at 61%, never turned back on, even when i put it on the charger it never charged, I attempted to soft reset it. (Yes the whole Power+vol down+ home key thing.) and nothing. Please help~!

 

[belodion]

There are probably several possible explanations, including a bad battery.