'22 Palisade, had to change the AGM battery today
- Thread starter wemay
- Start date
3 years is the average for warmer climates. Heat is hard on them, plus auto-start-stop, plus battery management systems which reduce the charge level and cycle them more up and down during driving… less charging at cruise and lots of charging during deceleration. You might be able to get a premium battery and get a better lifespan, or even shoehorn a larger size in there, if the challenge appeals to you. Otherwise, East penn/Deka for the win!
Nick1994
$100 site donor 2024
45 months is a pretty good battery life IMO.
I just replaced a Group 78 batery that was 7 years old in my El Camino. It had the luxury of cranking a mild 350 9:1 compression with an auto trans attached to it. 63 amp 10si alternator too. That battery slowly gave up the ghost as it became harder to start when the engine was hot.
The battery had a green 'eye' still, at the end and read 12.75 volts. Using an old Schumacher load tester CCA was only 200 out of 675. I bought a replacement for $60 two days ago. The 'new' battery has the plastic caps on it where I have to check the fluid every now and then. No agm for me. Old school junk works.
The battery had a green 'eye' still, at the end and read 12.75 volts. Using an old Schumacher load tester CCA was only 200 out of 675. I bought a replacement for $60 two days ago. The 'new' battery has the plastic caps on it where I have to check the fluid every now and then. No agm for me. Old school junk works.
OVERKILL
$100 Site Donor 2021
My SRT is still on its original battery
You are lucky to get 1 year out of a battery here.
The green eye only tells the condition of 1 cell. That cell can be good and the rest had.
so is it the heat alone, which I already knew.. but could it also be a combo of the new alternators that are not fully charging the batteries plus the hotter temps?? that's leading to these batteries lately not lasting as long as they did?
Don’t count on it.
I think your right, my Hyundai does charge any more then 80%. Any brand agm lasts 3 years tops, but I also have a ton of turbo heat in my car more then most turbo Hyundai/KIA turbos that don’t get thrashed.
Nick1994
$100 site donor 2024
Best battery I ever had was a Walmart $49 ValuePower that lasted 45 months on my old ‘00 Camry. I’d say our average is 2.5-3 years on car batteries in the desert.My SRT is still on its original battery
Though cars with them inside or in the trunk seem to last longer.
Thanks.. ya I was just thinking we're going to see many more batteries suffer a short life because they're short charged. I know with some cars a wire can be cut/disabled and the alternator won't try to "smart charge" which short charging is anything but smart. Wonder if that's a mod that can be done to your Hyundai? I'd be all for that, but the bigger question is why do the automakers do this? have stock in the battery manufacturers? odd..
Speaking of AGMs, this was my fun yesterday. Being a contortionist really helps. Infrequent use is death for AGMs in new vehicles.
Main battery under the driver's seat, stop start under the passenger seat. Grand Cherokee.
Main battery under the driver's seat, stop start under the passenger seat. Grand Cherokee.
I think these good sized SUVs have tons of electronics and go through batteries. I consider this poster’s experience typical and normal. Maybe even slightly favorable. Our 2016 MDX is on its fourth (at least)
I'm shocked that the OEM battery in my wife's 2018 Equinox is still going strong. Definitely going to replace it before winter though.
I installed a Walmart $49 Value power in relatives Rogue. Going strong at 7 years,
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edyvw
$50 site donor 2025
Last year replaced OE battery from my BMW. Thought it is about time to die after 13yrs. Turns out, amplifier was a problem and not weak battery that was causing issues with amp.
VW Tiguan had OE battery going for 9yrs.
Japanese vehicles (not sure about Korean) generally have undersized batteries and that reflects the lifespan.
VW Tiguan had OE battery going for 9yrs.
Japanese vehicles (not sure about Korean) generally have undersized batteries and that reflects the lifespan.
Heat kills them for sure. I mean in the summer time here I can start the car 8 hours later, and if the sun is out the temp gauge is still reading on the scale even though the vehicle has been off. That battery is up there baking - and remember - it’s a mass produced chemistry experiment - under accelerated decay due to the heat.
So heat gets them, and yes the BMS puts some wear on them as well. Reducing the top 15-20% state of charge makes more MPG gains than auto-stop-start - I played with the battery management settings via Forscan in my last vehicle. In the end, I set it back a little higher than stock but not much. It was probably worth a full mpg if memory serves, and maybe a little more. BUT, don’t miss this - at least Ford includes a monthly desulfurization/balancing charge, which runs the battery high for 8 hours or so - in my climate (the numbers vary with ambient temps) it was a 14.4V or greater (witnessed as high as 14.8), so they do have strategies included to prolong its life, just like, or in this case even better than, plugging it in to a wall charger once a month (smart chargers seldom reach much over 14V).
Even with that, however, auto stop start and the constant cycling of charge/discharge states put more cycles on the batteries. They do more work now.
So heat gets them, and yes the BMS puts some wear on them as well. Reducing the top 15-20% state of charge makes more MPG gains than auto-stop-start - I played with the battery management settings via Forscan in my last vehicle. In the end, I set it back a little higher than stock but not much. It was probably worth a full mpg if memory serves, and maybe a little more. BUT, don’t miss this - at least Ford includes a monthly desulfurization/balancing charge, which runs the battery high for 8 hours or so - in my climate (the numbers vary with ambient temps) it was a 14.4V or greater (witnessed as high as 14.8), so they do have strategies included to prolong its life, just like, or in this case even better than, plugging it in to a wall charger once a month (smart chargers seldom reach much over 14V).
Even with that, however, auto stop start and the constant cycling of charge/discharge states put more cycles on the batteries. They do more work now.
knock on wood i ave 2 cars with 5 year old batterys here in florida
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