AGM batteries
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
I only use them in my C5, since the battery is over the car's computer !
You need to use a battery tender with them IF you leave your car sit. AGM batteries don't like to sit (longer than 3 days) AND DISCHARGE, it hurts them and shortens their life. C5's are battery hogs when sitting.
You need to use a battery tender with them IF you leave your car sit. AGM batteries don't like to sit (longer than 3 days) AND DISCHARGE, it hurts them and shortens their life. C5's are battery hogs when sitting.
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,954
Likes: 0
From: New Rochelle, NY New York
I only use them in my C5, since the battery is over the car's computer !
You need to use a battery tender with them IF you leave your car sit. AGM batteries don't like to sit (longer than 3 days) AND DISCHARGE, it hurts them and shortens their life. C5's are battery hogs when sitting.
You need to use a battery tender with them IF you leave your car sit. AGM batteries don't like to sit (longer than 3 days) AND DISCHARGE, it hurts them and shortens their life. C5's are battery hogs when sitting.
so I was looking for a better battery. I let the RT sit for 10 day's and had to jump start. I thought it was a better battery then most.thanks for the info
Race Director
Joined: Aug 1999
Posts: 11,117
Likes: 671
From: SE Pennsylvania
St. Jude Donor '03 thru '26
Oldtimer
I know! I had to go every week and start my car this past winter. I have RT now in the car. I rent a garage and the owner won't let me use a tender.. afraid of fire,etc. She is in her late 70's and there is no changing her mind. Good point..double garage just for my vette so I was looking for a better battery. I let the RT sit for 10 day's and had to jump start. I thought it was a better battery then most.
thanks for the info
so I was looking for a better battery. I let the RT sit for 10 day's and had to jump start. I thought it was a better battery then most.thanks for the info
And I rent out the others. win-win !
Melting Slicks
Joined: Nov 2006
Posts: 2,836
Likes: 8
From: Still the Fastest (still running) Stock Bottom End Blown LS1/ 2010 ECS CC 10.50 CHAMP Hamilton, NJ
I have the same optima red top in the car for 4.5 years now. I ONLY use the battery tender in the winter (Dec, Jan, Feb). Car sits for over a month at a time and starts right up each and every time... No battery issues since using the Optima.
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,954
Likes: 0
From: New Rochelle, NY New York
Thanks
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,954
Likes: 0
From: New Rochelle, NY New York
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Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
If your car is a daily driver Red Tops are good batteries. the downside is they don't like being discharged so if you only use your car at weekends then you may be better with a traditional battery. this car has a small drain even when idle and it eats batteries. Unless of course you plug it into a battery tender when its idle.
Le Mans Master
Joined: Feb 2003
Posts: 6,683
Likes: 144
From: Memphis Tennessee
Still running my OE AGM battery. Over seven years and still acting like it was new. Only driven a few miles per month, not kept on a maintainer. I know I will probably buy one very soon, but it is interesting how long this one has lasted.
Thought I had lost it a couple of months ago, but charged it several times and all is good.
Update soon I bet.
Thought I had lost it a couple of months ago, but charged it several times and all is good.
Update soon I bet.
Last edited by ALLEGRO; Mar 21, 2010 at 05:01 PM.
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,954
Likes: 0
From: New Rochelle, NY New York
If your car is a daily driver Red Tops are good batteries. the downside is they don't like being discharged so if you only use your car at weekends then you may be better with a traditional battery. this car has a small drain even when idle and it eats batteries. Unless of course you plug it into a battery tender when its idle.
Reason I'm looking at a new battery. RT isn't going to cut it
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,954
Likes: 0
From: New Rochelle, NY New York
Race Director
Joined: Dec 2000
Posts: 19,304
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From: San Diego CA
Yellow tops are made for deep discharges (like marine batteries) but you don't get something for nothing. Most deep discharge batteries do not last as long as a good non-AGM, like the AC Delco Professional or even the Costco Kirkland batteries - either of which have been known to last 8 years or more.
Remember too, that you really don't have to worry about leaks. Battery manufacturers solved that problem back in 2004 when a redesigned (non-AGM) by Johnson Controls hit the market. The Costco Kirkland battery costs half what a Red or Yellow top costs and yet will last a long time.
Remember too, that you really don't have to worry about leaks. Battery manufacturers solved that problem back in 2004 when a redesigned (non-AGM) by Johnson Controls hit the market. The Costco Kirkland battery costs half what a Red or Yellow top costs and yet will last a long time.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Yellow tops are made for deep discharges (like marine batteries) but you don't get something for nothing. Most deep discharge batteries do not last as long as a good non-AGM, like the AC Delco Professional or even the Costco Kirkland batteries - either of which have been known to last 8 years or more..
But I wont tell you how much it cost...............
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,954
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From: New Rochelle, NY New York
As long as it works. I don't want to worry next winter if I don't start the car in 8 days It will be dead.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
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From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Remember my judgement was colored by a leaking AC Delco. Those days are, hopefully over.
Thread Starter
Drifting
Joined: Jun 2006
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From: New Rochelle, NY New York
Burning Brakes
Joined: Sep 2003
Posts: 1,085
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From: Broken Arrow OK
After having 2 different regular batteries leak on me, I bought an Optima Red Top. It is 5 years old and still going. They are expensive but not as expensive as the damage a leaking battery will cause.
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Let's clarify that your AC Delco battery was a pre-2001 vintage, correct?
There is no need, I repeat, there is no need to worry about leaking batteries any more! The last leakers were sold in the year 2000. I can almost guarantee you that your yellow top will not last as long as a good non-AGM battery.
Dave