5 min job turned into No crank

[Ovie]

Hey all, I have an 89 auto, it has been running rough lately so I swapped out the plug leads today as I thought they might be the problem now it won't crank. When I turn the key there is nothing at all, it has fuel pressure and I can hear the starter enable relay clicking, I have already checked the vats key and starter enable relay were good, what else is likely to cause this problem ? Thanks in advance

 

[Otter]

Battery would be my guess.