Interstate Batteries let me down

I take care of our batteries and have had mostly good success regardless of brand. I have, over the many years, had batteries that had internal failures primarily from poor manufacturing, that indeed failed well before their expected usable life. Like any other product, occasionally a bad batch, or a few lemons within every batch, leaves the factory although they have been tested and meet quality assurance standards. Sorry to hear about your experience, I've been fortunate with the last couple of sets I purchased from Samsclub. Although their brands or badging frequently changes, quality remains the same.