Lost 13lbs. today!!
Thread Starter
Safety Car
Joined: Apr 2008
Posts: 4,833
Likes: 1,850
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
Lost 13lbs. today!!
I stopped by a local speed shop and decided to pick up an Odyssey lightweight battery. Brought it home and it weighed in at 21lbs. The stock AC Delco weighed in at 34lbs. The Odyssey is shorter but about 1/8" wider because it's square all the way around. (Sorry no measurement to post at the moment). However, a little manipulating needed to be done with the stock tray. Here is a pic of both batteries. Clearly you can see there is quite a difference in size (and weight).
Dremeled out the back lip on the stock tray and it slipped right into place.
Battery faces backwards because of the location of the terminals. (You could face it forward, but you'd have to manipulate the pos/neg cables.) Only thing I really need is a longer bolt for the stopper since there is no lip on this battery. I believe the stopper will hold it in place securely enough since it sits nicely in the tray now. The car started right up no problem!
Dremeled out the back lip on the stock tray and it slipped right into place.
Battery faces backwards because of the location of the terminals. (You could face it forward, but you'd have to manipulate the pos/neg cables.) Only thing I really need is a longer bolt for the stopper since there is no lip on this battery. I believe the stopper will hold it in place securely enough since it sits nicely in the tray now. The car started right up no problem!
Administrator
Joined: Mar 2001
Posts: 368,360
Likes: 24,783
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Nice weight reduction. Hopefully the battery lasts a long time.
Racer
Joined: Mar 2006
Posts: 315
Likes: 0
From: Luling La.
Be careful when tightening the cables on this battery. If they are still built the same, if you let the post spin when tightening, you'll break the connection internally. I had one of these on my raceboat & let the post spin a little. Then had trouble with the battery & the manufacturer told me I had let the post spin & broke it. This was about 7 or 8 years ago, hopefully they made some improvements.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Safety Car
Joined: Apr 2008
Posts: 4,833
Likes: 1,850
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
You're very welcome. I was told that this battery is the most popular one and is very reliable. Also has a 3 year shelf life with no charging. 
I was told that this battery is the most popular one and is very reliable. Also has a 3 year shelf life with no charging.
Thread Starter
Safety Car
Joined: Apr 2008
Posts: 4,833
Likes: 1,850
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
I also inquired about the Braille batteries and he didn't recommend them. He said that customers have had issues with them.
Le Mans Master
Joined: Sep 2007
Posts: 7,604
Likes: 8
From: Belleville Il
!! That beats the heck out of a Red Top
!! Was not familiar with these batteries,,,How pricey are they compared to regular type replacements?? How about cranking amps? sorry to be so nosy,,but this has caught my interest!! 
Thread Starter
Safety Car
Joined: Apr 2008
Posts: 4,833
Likes: 1,850
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
Model: PC925
Here's all the info you need:
http://www.odysseybatteries.com/battery/pc925series.htm
