I dropped the superstock battery back off and they replaced the loose negative post without any question. All good now. That battery was $355 and the red cap 27 was $265. He knocked a little off for paying cash. My receipt says 48 month warranty for these batteries. The 27 group is a battery within empty battery case. The superstock is not. That thing is a boat anchor. Right now i’m happy with purchase. At this point we’ll see what their life span is.