I have bought interstate blemished batteries and they do work good, the problem with getting them for our cars is the size and shape. I have only found one H8 shaped battery with them while they would usually have 5 or 6 group 93 batteries which also fit.

They almost always had batteries for your average japanese car or GM side post, recently I had to buy a GM side post and drove the car to their warehouse - they checked it and it comes out that it actually had a warranty left on it. Replaced for quite less than even a blemished battery cost. - The PO had installed it. Good support IMO.

OTOH - I have also bought continental brand batteries and they do pack a punch, installed in a 2.4 camry and that beastly battery had 750CCA - in a smaller case than its original 500CCA battery.

__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)