I bought a new Interstate Battery today at Costco.

I have owned my truck for 8 years now and thought it was time I put a new battery in it. Costco sells Interstate Batteries and had my group number so I bought it. When I came home, I began thinking maybe I should have researched before I bought it. In the past, I put NAPA batteries in my diesel, and Auto Zone in the Yukon.
I wondered if the Costco batter is the same as one you would get through an Interstate dealer. I was able to bring up the specs from the battery numbers. Costco Interstate cost $119, Interstate dealer recommended $169. Costco Interstate 1/16" smaller in length and width, same height. Costco battery 40lbs, Dealer 38.8. Costco had higher CCA 770 vs, 730, and a longer warranty. Johnson Controls makes the battery. Depending where you live it is made in the U.S. (68%) or Mexico if you live in the south west.

I can't compaiin about the OEM Delco, still feels strong, was 630 CCA.

Most of my replacement batteries have been Deka over the last 12 yrs.
Between Deka and Delco have had good battery results.

Both Deka and Delco are very good brands. I had never had an Interstate before so I went with the thought that Costco is always good on returns and this has a 42 month warranty.