O'Reilly Auto Parts

I purchased a car battery from O'Reilly's one year ago for my 2017 Honda CR-V. The overnight temperature was 45 degrees. I tried starting the car but the battery was too weak to crank the engine. When the temperature warmed up, the engine started without incident. I took battery in to replace it as it was still covered by a three year warranty. The O'Reilly salesperson, Dylan, hooked the battery up to their "Trick" tester. He said the battery was good. I explained that the battery was not good since it couldn't crank a cold engine. Dylan refused to honor the warranty. He stated that it was O'Reilly's policy not to honor the warranty when their "Trick" tester shows good. I'm trained as a mechanic. They are trying to BS me.