Got 12 years out of the original Delco in the Chevy shop truck. Never came close to that before, must've been a fluke.
My battery was still somewhat OK, but it discharged over 7 days while sitting at the dealer with only my Garmin GPS lit up.
It got cold as well, which effected the CCA, and therefore would not roll it over.
I knew it was going out, but start it a few times/day to buzz around and it always charged. Plugging in a 400 watt inverter just running my laptop while the engine is not running warned me that it is close to toast. Like ~15 minutes the voltage would drop and the inverter freaked out.
Like I said, that battery don't owe me nothing
