C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Battery Question

Thread Tools
 
Search this Thread
 
Old Nov 3, 2005 | 12:29 PM
  #1  
02c-5's Avatar
02c-5
Thread Starter
Heel & Toe
 
Joined: Aug 2002
Posts: 22
Likes: 0
From: verona nj
Default Battery Question

Went to buy a replacement battery at dealer. I was advised that the 75P-7yr currently in my 2002 has been replaced with 78H-7yr. Can anyone confirm this GM update on batteries. Thanks.
Reply
Old Nov 3, 2005 | 02:56 PM
  #2  
Lovin It!!! - C5's Avatar
Lovin It!!! - C5
Racer
Supporting Lifetime
 
Joined: Oct 2005
Posts: 351
Likes: 0
From: Haw River North Carolina
Default

Why would you buy a GM battery again? Most folks get an Optima. Either a Red Top (Normal Use) or a Yellow top (For those with stereos loud enough to use as PA systems). Most folks shy away from the GM stuff because the originals had a tendency to sprout leaks and dribble down on the Harness / Module under the battery tray. Good luck whatever you decide.
I have a Red Top myself and Love It!
Reply
Old Nov 3, 2005 | 03:33 PM
  #3  
xlr8shn's Avatar
xlr8shn
Burning Brakes
15 Year Member
 
Joined: Oct 2004
Posts: 925
Likes: 0
From: Johnston, Iowa
Default

Originally Posted by Lovin It!!! - C5
Why would you buy a GM battery again? Most folks get an Optima. Either a Red Top (Normal Use) or a Yellow top (For those with stereos loud enough to use as PA systems). Most folks shy away from the GM stuff because the originals had a tendency to sprout leaks and dribble down on the Harness / Module under the battery tray. Good luck whatever you decide.
I have a Red Top myself and Love It!
If it wasnt for the PCM being underneath the battery location, we could all run $30 wal mart batteries... I like the dry cell red top Optima!
Reply
Old Nov 3, 2005 | 04:54 PM
  #4  
2KFRC5's Avatar
2KFRC5
Safety Car
10 Year Member
 
Joined: Nov 2000
Posts: 4,419
Likes: 6
From: Arroyo Grande CA
Default

Originally Posted by Lovin It!!! - C5
Why would you buy a GM battery again? Most folks get an Optima. Either a Red Top (Normal Use) or a Yellow top (For those with stereos loud enough to use as PA systems). Most folks shy away from the GM stuff because the originals had a tendency to sprout leaks and dribble down on the Harness / Module under the battery tray. Good luck whatever you decide.
I have a Red Top myself and Love It!
The original ones that had a tendency to leak, even though my didn't, had it for 6 years, were the side-post. I haven't heard that any of the top-post have had that problem.
The battery I have now is a DieHard. Cheaper than the Red Top, and a better warranty.
Reply
Old Nov 3, 2005 | 08:41 PM
  #5  
02c-5's Avatar
02c-5
Thread Starter
Heel & Toe
 
Joined: Aug 2002
Posts: 22
Likes: 0
From: verona nj
Default

Thanks for the suggestions. My current battery is four years old and still ok/only problem is slightly slower cranking after sitting 5-10 days. More concerned about the age. The battery installed is the glass mat (AGM) and to the best of my knowledge this battery was designed to eliminate the leakage problems that some have experienced. I have heard of several issues with the optima, that is why I am looking at original equip.
Reply
Old Nov 3, 2005 | 08:59 PM
  #6  
masterchiefbt's Avatar
masterchiefbt
Intermediate
 
Joined: Sep 2005
Posts: 36
Likes: 0
From: Tyler Texas
Default

Went to NAPA and bought the legend gold series....770CCA vs. 550CCA from Delco. More is better in a battery..$65 out the door.
Reply
Old Nov 3, 2005 | 09:38 PM
  #7  
SGT. PYLE's Avatar
SGT. PYLE
Burning Brakes
 
Joined: Apr 2005
Posts: 753
Likes: 1
From: Oceanside CA
Default

Originally Posted by Lovin It!!! - C5
Why would you buy a GM battery again? Most folks get an Optima. Either a Red Top (Normal Use) or a Yellow top (For those with stereos loud enough to use as PA systems). Most folks shy away from the GM stuff because the originals had a tendency to sprout leaks and dribble down on the Harness / Module under the battery tray. Good luck whatever you decide.
I have a Red Top myself and Love It!
Get a Red Top 75/35 and never worry about a leaky battery again.
Reply
Old Nov 4, 2005 | 12:24 AM
  #8  
vetteguy02's Avatar
vetteguy02
Advanced
15 Year Member
 
Joined: Oct 2005
Posts: 77
Likes: 0
From: San Jose CA
Default

Another option is the excide orbital amg battery. It looks more like the original battery. The battery in my 02 was 3 ½ years old and gave a hint once something was wrong. Charging fault appeared on the dic for a few seconds. One week later I drove the car ten miles, charging was normal. After returning to my car, the battery was completely dead, I could not jump-start it. A 3 ½ to 4-year-old GM amg battery is an old battery.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-1

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-2

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-3

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-4

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-5

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-6

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-7

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-8

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-9

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
Old Nov 4, 2005 | 03:32 PM
  #9  
Dave68's Avatar
Dave68
Race Director
20 Year Member
Liked
 
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Default

Actually, the AGMs were designed for long life. Driving short distances is a sure-fire way to reduce the life of the battery, regardless of type. My OEM ACDelco AGM is now 4.5 years old and still cranking like it was new. Red Tops HAVE had plenty of problems, but are one of the few AGM-type batteries out there. The Excide may be a good option if you want to stick to a leakfree battery.
Reply
Old Nov 4, 2005 | 04:36 PM
  #10  
50th year's Avatar
50th year
Burning Brakes
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2005
Posts: 836
Likes: 89
From: Tucson Az
2017 C7 of Year Finalist
Default

Agreed
Happy with my excide.
Ron
Reply
Old Nov 5, 2005 | 12:21 AM
  #11  
Jerseyvinny's Avatar
Jerseyvinny
Instructor
15 Year Member
 
Joined: Jul 2005
Posts: 184
Likes: 8
From: Berkeley Heights New Jersey
Default

Had a really bad experience in my C4 with a Delco so now I use a red top Ultima in my C5.
Reply
Old Nov 5, 2005 | 10:05 AM
  #12  
wiz1500's Avatar
wiz1500
Pro
 
Joined: Aug 2005
Posts: 642
Likes: 0
From: Center Line MI
Default

Why would you buy a GM battery again? Most folks get an Optima. Either a Red Top (Normal Use) or a Yellow top (For those with stereos loud enough to use as PA systems
The P.A. System in my 2000 Is supported buy a 1800 amp gel cell Kinetik.... You could drive the car home on just this batt. if you had too. They are a bit pricey 369.99 M.S.R.P. but it should be the last batt. you buy for a long time..
Reply
Old Nov 6, 2005 | 12:40 AM
  #13  
GrayC5's Avatar
GrayC5
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Nov 2003
Posts: 12,346
Likes: 5
From: Mustang OK
Default

Originally Posted by xlr8shn
If it wasnt for the PCM being underneath the battery location, we could all run $30 wal mart batteries... I like the dry cell red top Optima!
Except that the Optimas are not a dry cell battery. They also are not a gel cell battery as others often refer to them. According to the Optima web site, the Red Top and Yellow Top are Absorbent Glass Mat (AGM) batteries. AGM batteries use a liquid acid electrolyte like other conventional lead acid batteries. The difference is that in the AGM batteries the acid electrolyte is absorbed in the glass mat which makes them much less likely to leak:

"All you ever wanted to know about AGM and Gel Cell batteries"
Reply

Get notified of new replies

To Battery Question





All times are GMT -4. The time now is 02:45 PM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE