#850241 25 months and it gave up the ghost. It has been showing signs though since last winter - not going to buy again. -Jimi
Purchased Interstate Battery for Toyota Corolla 4/15. Dead 10/16. So roughly about 18 months. Costco covered the cost of the new battery, but that is a ridiculously short lifespan for a battery. My previous OEM battery lasted 6.5 years -B
Purchased Interstate April 8 2015 for Toyota Highlander, sticker date 3/15. Dead 18 months later on October 18 2016. Costco warranty covered full value towards new battery replacement when exchanged today. -Kat in CA - Bay Area
Just purchased a 700CCA Interstate battery (850232) for $83.99 + $15 core fee today. So it's now $1 more than your chart above. Hopefully, it lasts long enough. The factory one I just replaced in my SUV lasted just about 5 years. Today was the third time having to get a jump start in the past 6 -Edward in MD
Kirkland Signature battery group 35 from Oct.2009 with 100 mo warranty needed replacement exactly 84 months later and I received 5% in warranty. It's the first Costco battery in my 1986 Nova that did not exceed its warranty period. 84 months is not bad although I think a 100 mo rating is overly... -BCLee
New Interstate battery to replace a failed CostCo battery at 39 months... Sticker 8/15 - Installed 9/2015 - Dead 10/2016 -Todd N.
Two Interstate Batteries from CostCo all dated 2016, First one dead at 3.1V unable to charge after 1 month. The replacement lasted about 2 months. Same vehicle. Previous Interstate non-CostCo branded unit lasted 7 years. This always happened with the Kirkland brand batteries and I thought now that... -Todd A.
Just picked up a replacement for my 2000 Suburban. The new one is the Interstate and the same CCA capacity. The Kirkland 100 month warranty battery had a 6/2006 stamp, it lasted 10 years. No complaints! -TM
I got 3 years out of a Kirkland battery in Toyota Sienna. Also.. it is my understanding that the Kirkland batteries were also made by Interstate as well, so probably nothing has really changed but the label and the warranty. I have actually got slightly longer battery life from the Auto Club (AAA) -RM