- May 13, 2009
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Is paying a premium worth it or are they basically the same? Wife's battery went dead so it's either store brand or for $21 more for Duralast.
I like buying Kirkland or Interstate from Costco. 3 yr free replacement, 100 months warranty.
Most auto batteries are made by just three manufacturers, Delphi, Exide, and Johnson Controls Industries. Each makes batteries sold under several different brand names. Delphi makes ACDelco and some EverStart (Wal-Mart) models. Exide makes Champion, Exide, Napa, and some EverStart batteries. Johnson Controls makes Diehard (Sears), Duralast (AutoZone), Interstate, Kirkland (Costco), Motorcraft (Ford), and some EverStarts.
check the water level once a month and use distilled water to refill when needed. Most people do not check their batteries on the belief that maintenance free means it never loses water, wrong. it loses water, the plates get exposed to air, sulfate and ruins the battery. Especially common in warm or hot climates. It is impossible to make a lead acid flooded cell battery not lose water . Even sealed lead acid batteries lose water over time . They all have vents for safety and over time those vents lose water.
Kirkland's 7 year battery failed each time 6-12 months in my wifes car. While we got another battery for free, it wasn't worth it.
Went to an Interstate and it's been nearly 3 years. Down in florida batteries in general fail about that mark in even the best of maintenance.
Depending on where you live, that can be a useless warranty. Batteries last a minimum of 5 years up here in the cold. My parents are still using the original oem batteries in both of their 2005 vehicles.I like buying Kirkland or Interstate from Costco. 3 yr free replacement, 100 months warranty.
It depends where you live, batteries in SoCal will last years longer than those in Alaska.