Ace 2 not turning on

Hello all fellows here.

I’ve been on my Ace 2 for over 2 yrs now, working nicely until recently I was using my phone as normal then the screen turned black at around 18% battery,and the phone crashed.I took battery out ant put another battery in again, and the phone won't power on.The charging animation still appears if I charge both of the 5000 mah extended battery and factory battery, but the phone just can’t jumpstart back again. Can someone please help me in finding a solution? Thank you.
 
Samsung Galaxy Ace 2, maybe time for a new phone... Certainly the Verizon? 2-year contract is up I hope
 
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