I know this has been hashed over to death but what is the latest on battery tech for a 2003 vette, I do like the idea of agm though.

 

AGM is certainly the safest type for a C5.

 

AGM is the way to go. I personally use Optima Redtop. There are many who agree with me on that, and many who don't. Ultimately, as long as you go with a quality AGM battery, you'll be fine.

 

I use optima redtop on a trickle charger. Zero issues for a couple years now.

I think the yellow top does better if you complete drain the battery multiple times.

 

Delco and be done with it... Rocket science?

 

Definitely get an AGM battery - lots of vacuum lines and electronics sit under the battery in a C5.

 

TOTALLY AGREE. Just changed a 7 year old Delco in my 2014 CTS. Had a Delco in my C5 for years. Still do. For every problem you hear of with a Delco leaking (and leaking can cause a LOT of damage), there are 500 you DON'T hear about that work perfectly fine, and last for years.

 

Leaking Delco's were a phenomenon about 18-20 years ago. Mine was replaced under warranty and the replacement lasted about 8 years, with no issues. Replaced that with an AGM.

 

Like others have said, get an AGM style. I personally like the Optima Yellow Top.

 

I like the Walmart battery, under $100, a cheap battery for a cheap old car

 

AC Delco Professional is my choice !!

 

Short answer - AGM for sure!

Long answer with FACTS and real world info.

Cheers!

 

Checkout the Duracell 78/34 DT AGM battery sold at Sam’s Club.

 

Agreed - 7 Years and Zero Issues!

 

Just bought one of these myself. I've had several over the years with no complaints. $75 less than autozone the other day. By the way -- the battery shell (not sure about the guts) is EXACTLY the same as autocraft gold from advance auto. I compared them when i swapped.

I have 4 cars with this same battery size. Battery tender kept on all of these except the corvette (until last year when i started working from home, it has a battery tender too).
02 Camaro SS, rarely driven. Everstart Maxx from 2008 is still excellent.
99 Suburban, driven mostly in winter, but also for vacations, errands, etc. -- has an AutoGraft Gold from 2012. It's been on it's way out for at least 3 years, but still cranking (slower every year though. Jumper cables in the back!)
93 K2500, rarely driven, autocraft gold battery is from 2014, still fine
02 Corvette. Had Autocraft Gold that lasted <3 years, replaced under warranty shortly after i got the car. Replacement battery died last weakened after JUST over 3 years (Acid level definitely low, but no leaked fluid anywhere). It died FAST. When from "fine" to dead in a matter of a week or 2. Replaced with walmart.

I've learned over the years that he battery tender (not a trickle charger) definitely lengthens the life if you don't drive the vehicle much. and at $25-$45, its far cheaper than a new battery. it pays for itself.

In the end, the battery life will vary with model, weather, car, battery tender, usage, and luck. Get what works for you and enjoy the ride.

 

I'm on my second optima redtop. The first one last 11yrs so I've had no problems with them at all.