Okay, so I am neither paranoid or crazy. The lab results for my battery and charger came back from Shorai and it turns out the battery indeed has a bad cell, the charger is fine. Unfortunately, I waited too long to report the issue so under the 5-year warranty I need to purchase a replacement from Shorai for 50% of the MSRP - about $100! So I took this opportunity to purchase the LFX19A4-BS12 model since I wasn't happy with the cranking power with either the Norton or the Triumph. I sure hope this is the end of my bad luck with accessory parts.