F-250 dual battery change

[SilverGate]

My OEM batteries lasted 5 years, were replaced in 2011 with Costco brand, Kirkland Signature batteries, which lasted 4 years and died last week.

Costco gave me 50% back on the price of the old batteries, which had a 100-month pro-rated warranty. They discontinued the Kirkland brand and now sell Interstate batteries, and now provide a 42-month non-prorated warranty.

See details and how I changed my batteries in my History Safari Express post, "F-250 dual battery change."