I pulled this battery from the very first donor C5 that I bought to build the very first GTM I built. I've been using it ever since....mostly to run the windows up and down in the doors while making all of the adjustments to get everything to work and fit right in the door. I'm on GTM #42 right now....which means this battery has ran 84 window regulators up and down.....probably tens of thousands of times at this point. Finally turned it in as a core today and upgraded to a newer bad battery that still has a bit of life left in it. I'm guessing from the sticker that it was made in 2004....

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