iPhone 5 won't start, just shows battery with bars when charging

batteryi

Commendable
Jun 4, 2016
1
0
1,510
My iPhone 5 refused to start, so I charged it overnight and it was still showing the battery with a few red bars this morning. Resigned to the fact that I would lose unsaved data anyway, I tried to restore it through itunes. It downloaded a software update, even got to the apple logo and the bar filled up all the way!

And then it went back to the battery with red bars screen again :/

I've tried pretty much everything I've seen in forums. What can I do to revive it? Is the battery gone?