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Post by Marc on Nov 25, 2022 16:14:19 GMT -6
My 2001 4.0 wouldn't start today. It turned out to be a bad battery. But what I am curious about is this: the new battery, a Duralast. was considerably lighter than the old battery, NAPA. Both were the same physical size and had the same specs, like CCA. My question: have recent advances in battery technology resulted in lighter weight batteries?
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Post by AuroraGirlFromMars on Nov 26, 2022 16:04:42 GMT -6
My 2001 4.0 wouldn't start today. It turned out to be a bad battery. But what I am curious about is this: the new battery, a Duralast. was considerably lighter than the old battery, NAPA. Both were the same physical size and had the same specs, like CCA. My question: have recent advances in battery technology resulted in lighter weight batteries? I would bet you its cheaper made or there is some fudging on the specs. get it load tested and see if it rationally checks out was it normal or AGM Or anything(either battery) i would get a high end agm personally (do you have the wider or the narrower battery option) |
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Post by Marc on Nov 26, 2022 18:33:41 GMT -6
It doesn't seem to be an AGM. I'll check the other items ASAP.
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Post by quixote on Nov 26, 2022 19:27:52 GMT -6
I actually work for an automotive battery company, but it would be silly for me to let that suggest I'm an expert, beyond the facts that I have handled and seen the insides of several types of batteries.
I can tell you that most of the labeled batteries you see for sale are made by one of three different manufacturers. If we don't have enough batteries of a certain type to fill an order, we sometimes use a higher spec'd battery that is the same physical size. It just gets labeled with the lower specs. I can tell you that higher spec batteries are usually heavier, & that a AGM battery of a given size will have higher ratings and be heavier, because it has less acid and more lead.
If you are curious, a battery that has less lead, but is the same size, will have more plastic bracing, spacers, and more acid --because they are so much cheaper than lead. AGMs have fiber separators, which hold the acid, so you don't need as much to completely cover the plates.
I assume Gen2 uses the same size battery as Gen1. It's big & heavy. Since I prefer AGMs, I tried my company's "compatible AGM," if I remember right it was a 9a78. It had lower specs, and it is smaller and lighter than the flooded OEM battery. The limiting factors seemed like they are the height & the side posts, so I went looking... Since I know from my Fords that the 9a65 is short enough and higher electrical specs, I used one of those & converted it to work with side-terminals. This works fine, although it is 100 amps lower rating than OEM, still.
Personally, I always get AGMs & the highest cc amperage that will fit in the battery tray. Unless there's been a remarkable jump in battery tech, it will be a heavier battery. AGMs have a higher failure rate at very high temperatures and very low temperatures, but they also can run at a lower % of full charge, and discharge in storage around 1% per month instead of 10% per month for a flooded (OEM) battery.
Also, you really shouldn't "quick-charge," an AGM battery. They charge at lower amperages & for even a trickle-charger, you need one that has a different mode for AGMs. (On my charger, it's actually the winter/maintenance mode, instead of standard mode.)
I hope this helps. (Sorry, I ramble.)
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Post by AuroraGirlFromMars on Nov 28, 2022 5:11:00 GMT -6
I actually work for an automotive battery company, but it would be silly for me to let that suggest I'm an expert, beyond the facts that I have handled and seen the insides of several types of batteries. I can tell you that most of the labeled batteries you see for sale are made by one of three different manufacturers. If we don't have enough batteries of a certain type to fill an order, we sometimes use a higher spec'd battery that is the same physical size. It just gets labeled with the lower specs. I can tell you that higher spec batteries are usually heavier, & that a AGM battery of a given size will have higher ratings and be heavier, because it has less acid and more lead. If you are curious, a battery that has less lead, but is the same size, will have more plastic bracing, spacers, and more acid --because they are so much cheaper than lead. AGMs have fiber separators, which hold the acid, so you don't need as much to completely cover the plates. I assume Gen2 uses the same size battery as Gen1. It's big & heavy. Since I prefer AGMs, I tried my company's "compatible AGM," if I remember right it was a 9a78. It had lower specs, and it is smaller and lighter than the flooded OEM battery. The limiting factors seemed like they are the height & the side posts, so I went looking... Since I know from my Fords that the 9a65 is short enough and higher electrical specs, I used one of those & converted it to work with side-terminals. This works fine, although it is 100 amps lower rating than OEM, still. Personally, I always get AGMs & the highest cc amperage that will fit in the battery tray. Unless there's been a remarkable jump in battery tech, it will be a heavier battery. AGMs have a higher failure rate at very high temperatures and very low temperatures, but they also can run at a lower % of full charge, and discharge in storage around 1% per month instead of 10% per month for a flooded (OEM) battery. Also, you really shouldn't "quick-charge," an AGM battery. They charge at lower amperages & for even a trickle-charger, you need one that has a different mode for AGMs. (On my charger, it's actually the winter/maintenance mode, instead of standard mode.) aurora like lesabre had 2 different battery options I hope this helps. (Sorry, I ramble.) The longer battery is 2 inches wider (you know what I mean) and the fume harness is different You should be careful using a 65 under your back seat. there isnt a way to use the fume harness on it I believe the other size is a 9_ something like 95 maybe.... cant recalll atm 37? idk |
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Post by AuroraGirlFromMars on Nov 28, 2022 5:34:39 GMT -6
 heres the harnesses |
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Post by AuroraGirlFromMars on Nov 28, 2022 5:42:10 GMT -6
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Post by quixote on Dec 1, 2022 1:20:26 GMT -6
The longer battery is 2 inches wider (you know what I mean) and the fume harness is different You should be careful using a 65 under your back seat. there isnt a way to use the fume harness on it I believe the other size is a 9_ something like 95 maybe.... cant recalll atm 37? idk You are correct about the fume harness... That's why I use an AGM. It's an un-vented battery. I don't know what the actual percentage differences between the amount of acid between flooded and AGM is, but the amount of acid is small enough in the AGM that the ordinary "leakage" between the seams at the top and the terminals is enough that there's no pressure problem. Also, under the seat the battery is not subject to the same temperature extremes there would be in an engine compartment, so there's is even less need for venting. (It would mostly be at higher temperatures.) Every car I had before I started using AGMs (all "older model" cars), I had to replace either the battery cable terminals or the entire battery harness. I have not replaced one, since, because there is so much less acid vapor leaking around the terminals of an AGM battery. ---although I do have to admit, I'm also putting 30-50% the miles on the cars, they also live outside. Only my Aurora is garaged. I also spent a lot of time in Texas and Florida, before going AGM. I don't spend nearly so much time in that kind of heat, either. People here may already be aware that the Industry Leader in AGM's is the Optima Battery. Optimas can be installed sitting on their side --because there are no vents, no risk of spilling. I don't work for that company. I'm not using Optimas. My guess is that my company adapted plates from a standard flooded battery to meet the AGM spec, and probably copied Optima whenever they could, without breaking a patent. I have had no problems with our version. |
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Post by AuroraGirlFromMars on Dec 2, 2022 11:50:50 GMT -6
 nothing being said just sharing a photo of an AGM which had vent slots so I put the harness on. fits tight lol |
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Post by quixote on Dec 3, 2022 1:13:19 GMT -6
Good for you! I hope you like the battery (although I guess we mostly don't notice, unless the battery isn't "up to snuff.").
I wouldn't have bothered to post again, except to point out that it looks to be an Interstate.
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Post by AuroraGirlFromMars on Dec 13, 2022 8:07:46 GMT -6
Good for you! I hope you like the battery (although I guess we mostly don't notice, unless the battery isn't "up to snuff."). I wouldn't have bothered to post again, except to point out that it looks to be an Interstate. that was times long past, I dont have thgat car anymore but the AGM thing. you should put a harness on it if yours is on the floor under the seat. you cant escape fumes. you will cause corrosion or ruin fabric but likely not a lot good things. That battery was/is a northstar but that brand got bought and its not likely to stay on consumer car agms anymore |
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Post by quixote on Dec 17, 2022 10:44:58 GMT -6
Sad to say, but my car has been sitting for quite a while --head gasket.  |
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Post by AuroraGirlFromMars on Dec 27, 2022 11:46:48 GMT -6
Sad to say, but my car has been sitting for quite a while --head gasket. sitting doesnt really make a head gasket fail, but corrosive coolant that sits I could see maybe working against it while sitting |
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