What did you get? Mine was at 54% charge the other morning, still started right up but it's over 3 years old now.
Well it had an Interstate in there, but I didn't know what date it was installed because the month /year marking tabs on the label wasn't marked.
Resting voltage was 12.4v and the "battery low, start vehicle" warning would display on the DIC only after a couple minutes of having key on/engine off. I never had a problem starting the vehicle though.
My wife works for Walmart and had her 25% off entire purchase card for working Thanksgiving and we were doing our Christmas shopping and I looked at batteries and they had the H6 with 5 yr warranty. Couldn't beat the price at 25% off.
When I pulled the Interstate I noticed the manufacture date sticker on the side of March 2016. This has a 6yr power warranty on it and an 800 number to call and I thought about going that route and maybe getting a pro-rated one, but wasn't sure since I wasn't the original purchaser and it wasn't completely dead.
We have 4 vehicles and a lawn tractor and I've always kept an old 12v battery around to help jump start or temporarily power stuff in the garage or shed. Figured I'd keep the Interstate battery and use the old one I have sitting around that's dated 2011 to take in for the core charge.... Lol
2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18