What Size Battery do I Need for a 2008 Chevy Silverado?

What size battery do I need for a 2008 Chevy Silverado?
SponsorOPTIMA Batteries
LocationKissimmee, Florida
DateJune 7, 2021
Finding the right size battery for the Chevy Silverado over the years has had it's challenges. There were several years, where multiple batteries could fit in the tray, so then it became a guessing game, trying to determine which battery would work best for your truck. Fortunately, GM simplified things for Silverado owners of the GMT900 generation, including all the versions of the Silverado built in 2008.

Whether you had the V6, any of the three V8 options or an HD truck with a diesel engine, the battery you need is the OPTIMA H6 YELLOWTOP. Don't let the conservative rating of 800 cold cranking amps fool you,  this battery is an absolute powerhouse. The tale of the tape in the weight of the battery and the OPTIMA H6 YELLOWTOP weighs in at over 54 pounds! More active material (99.99% pure virgin lead) and robust cast straps to connecting the cells can help this battery last up to three times as long as a traditional flooded lead-acid battery!

Modern trucks are particularly demanding of their batteries, so you'll want to make sure the battery you choose can stand up to all the abuse you throw at it, including the demands that came from the factory. Whether you subscribe to OnStar or not, that system runs 24 hours a day, seven days a week and that can discharge any battery. The key to maximizing battery lifespan, regardless of the battery you choose, is keeping your battery fully-charged whenever possible. In the case of the OPTIMA H6 YELLOWTOP, fully-charged voltage is about 13.0-13.2 volts.

We're so confident proper voltage maintenance will extend the lifespan of your OPTIMA battery, that we will extend the free replacement warranty by a full year, if you buy an OPTIMA battery from us and a Digital 1200 charger at the same time.