AGM Batteries.......
No Hostility Be Happy
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From: South Hill Wa
2022 C5 of the Year Finalist - Modified
2021 C5 of the Year Finalist - Modified
I bought a $38 AGM battery from a company called "mighty maxx" On ebay,
it was very small, less than half the size of a typical car battery.
I bought it in 2017 as a temporary battery to see if it would even be able to crank over the 5.3L engine in my car...
Well, I am still using it to this day. Its pretty amazing. Cranks over 5.3L Like nothing at 9:1 compression on the 20 year old starter.
it was very small, less than half the size of a typical car battery.
I bought it in 2017 as a temporary battery to see if it would even be able to crank over the 5.3L engine in my car...
Well, I am still using it to this day. Its pretty amazing. Cranks over 5.3L Like nothing at 9:1 compression on the 20 year old starter.
Lithium?
Race Director
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Interesting subject lithium batteries......Is anyone making them specifically for automotive use, besides the electric cars? It seems they would outlast any other type. I still have the original TPMS sensors in my 2000 C5, and they're working fine!! Can't believe it myself. So I'm assuming they're lithium. But lithium batteries the size of OEM are probably cost prohibitive, maybe $500+? 🤔
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St. Jude Donor '03 thru '26
Interesting subject lithium batteries......Is anyone making them specifically for automotive use, besides the electric cars? It seems they would outlast any other type. I still have the original TPMS sensors in my 2000 C5, and they're working fine!! Can't believe it myself. So I'm assuming they're lithium. But lithium batteries the size of OEM are probably cost prohibitive, maybe $500+? 🤔
https://antigravitybatteries.com/pro...tive/ag-75-rs/
Le Mans Master
Joined: Sep 2021
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From: WI
Afaik lithium batteries suffer from much higher internal resistance than lead acid, so they don't make for good starter batteries that need to deliver high amps in a short time to turn a combustion engine. Maybe they'll supplement lithium cells with supercaps eventually.
No Hostility Be Happy
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From: South Hill Wa
2022 C5 of the Year Finalist - Modified
2021 C5 of the Year Finalist - Modified
So you are basically using a riding lawnmower battery to crank your engine and it's taking it. That's badass.
Last edited by Mr. Black; Oct 7, 2021 at 07:45 PM.
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Here is a lithium battery for our Corvettes. Big bucks
https://antigravitybatteries.com/pro...tive/ag-75-rs/
https://antigravitybatteries.com/pro...tive/ag-75-rs/
Safety Car
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There are a few companies making automotive lithium. Antigravity is one, Braille is another. Heard good things about both.
Limitless Lithium is another company that makes them mainly for use as car audio supplements, but I have friends with huge systems using them to run the whole car.
Limitless Lithium is another company that makes them mainly for use as car audio supplements, but I have friends with huge systems using them to run the whole car.
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Le Mans Master
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Melting Slicks
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There are a few companies making automotive lithium. Antigravity is one, Braille is another. Heard good things about both.
Limitless Lithium is another company that makes them mainly for use as car audio supplements, but I have friends with huge systems using them to run the whole car.
Limitless Lithium is another company that makes them mainly for use as car audio supplements, but I have friends with huge systems using them to run the whole car.
It would jump start a vehicle for the first year or so. Since then it's only useful as a power bank to run laptops, recharge phones, etc.
They claim this one will fit all the C5 models- https://antigravitybatteries.com/pro...tive/ag-75-rs/
It does have a 5 year warranty but at 3-4 times the cost of an AGM I don't see much of a reason to buy one. Maybe if weight savings is important?
Safety Car
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St. Jude Donor '20-'21-'22-'23-'24
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If you're into cheap weight savings, you can get an AGM motorcycle battery with enough CCA. You just won't have as much reserve power, such as if you listen to the stereo with the engine off.
There have been threads on this in this forum in the past if you do a search.
There have been threads on this in this forum in the past if you do a search.
Race Director
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If you're into cheap weight savings, you can get an AGM motorcycle battery with enough CCA. You just won't have as much reserve power, such as if you listen to the stereo with the engine off.
There have been threads on this in this forum in the past if you do a search.
There have been threads on this in this forum in the past if you do a search.
Last edited by grinder11; Oct 13, 2021 at 05:51 PM.
Melting Slicks
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I bought one thru a Amazon "Lightning Deal" and about a year later - I got to actually try it out. I successfully jumped my LS3 Vette with it. I was actually quite impressed that a battery that's about the size of two cigarette packs could start a big V-8.
As far as my experience with AGM's goes - Years ago - I used to be a big fan of the (red top) Optimas. But then their quality seems to have gone downhill. My first Optima lasted about 7 years - it's replacement lasted about half that. Another I had installed did even worse. I still believe in the AGM technology - but I'm now using Deka (East Penn) - they are available thru a number of places - including NAPA (Deka makes the NAPA branded AGM batteries). I haven't had one long enough to tell for sure - but so far - so good. YMMV....
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As fussy as our cars are, I don't think it would be prudent to experiment with motorcycle batteries in the C5. I'm reasonably sure you were making a hypothetical situation statement. I think I'm going to do the search anyway, because if this could possibly work, well.......