Phone boots for 5 seconds to apple logo then turns off
So recently I got this phone and I thought I could fix it, I still think I can but I don't know if it's a battery issue and will need to replace or if I should place on DFU mode. I've tried to restore but each time it says an error occurred and it failed. I turn it on and it puts the apple logo and then turns off 3 seconds later and that happens over and over again. I don't know if this is necessarily a loop since it just turns off it doesn't restart by itself doing the same thing. iPhone 6 Plus
Is this a good question?