The Panasonic in my 2008 4Runner lasted for 10 years.
2018 Lexus LX Interstate AGM battery 24F
- Thread starter mangeorge
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Yes, I have a 24F in my LX. Zero issues
From a functional POV, under sizing batts can't be a good thing.
While it will start the car just fine, relatively speaking, for any draw, it will always be operating some percentage lower state of charge (SOC) compared to a larger battery. This has knock on effect of relatively lower voltages and more voltage sag when starting. Driving more amps and heat in the starting system. We already know the starter relay is a wear item and a liability in higher miles. A smaller battery will on exacerbate its wear.
It's also more wear/tear on the smaller battery itself, as again for any unit of energy used in starting or reserve, will cause it to be at a lower SOC. We know lead acids are happiest and have the the most longevity when full.
So potentially lower life for the starter relay/starting system, the battery itself, and the rest of the vehicle electronics and tons of motors (folding mirror, rear hatch, steering wheel, seats, etc.) where these inductive loads will pull more amps across sensitive electronics, relays, and brushes with more heat.
This is also the reason I don't wait until a worn battery is unserviceable, and I change them at the earliest symptoms of capacity loss. Batteries are considered end of life when they have 80% of capacity remaining.
While it will start the car just fine, relatively speaking, for any draw, it will always be operating some percentage lower state of charge (SOC) compared to a larger battery. This has knock on effect of relatively lower voltages and more voltage sag when starting. Driving more amps and heat in the starting system. We already know the starter relay is a wear item and a liability in higher miles. A smaller battery will on exacerbate its wear.
It's also more wear/tear on the smaller battery itself, as again for any unit of energy used in starting or reserve, will cause it to be at a lower SOC. We know lead acids are happiest and have the the most longevity when full.
So potentially lower life for the starter relay/starting system, the battery itself, and the rest of the vehicle electronics and tons of motors (folding mirror, rear hatch, steering wheel, seats, etc.) where these inductive loads will pull more amps across sensitive electronics, relays, and brushes with more heat.
This is also the reason I don't wait until a worn battery is unserviceable, and I change them at the earliest symptoms of capacity loss. Batteries are considered end of life when they have 80% of capacity remaining.
I just saw this. Apparently Optima is now distributed by Interstate batteries - this is news to me. These batteries used to be amazing IIRC, then they had a fall from grace regarding warranty denials, poor craftsmanship/performance and I haven't checked into them since.
Maybe they've improved since partnering with Interstate? Regardless, post what you end up going with and if you're questioning your battery, get a new one sooner than not as @TeCKis300 alluded to.
Skip the AGM. There was a time when they were awesome, but with the advent of temp compensating and smart alternators, AGMs in modern cars that are configured for lead acids, will be compromised, die an premature death, and will never deliver on promised value.
The 24F I bought has 700CCA, 875CA and 130 min reserve. The Diehard silver I replaced (27F) has 710CCA 885 CA and 165 min reserve. So I lose some reserve capacity but I can't imagine 10 CCA and 10 CA are a huge deal.
Interestingly if you go to the Advanced Auto page 3 of 4 "exact fit" batteries are 24F
Seems like manufactures should spec a group size for fit but also a min CCA/CA
Interestingly if you go to the Advanced Auto page 3 of 4 "exact fit" batteries are 24F
Seems like manufactures should spec a group size for fit but also a min CCA/CA
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I got 7 years out of an “undersized” battery in my 4Runner in climates ranging from Midwest to Alaska. All while running a powerful aftermarket amp/stereo setup.
It was a Napa premium.
It was a Napa premium.
I run one of these in my 80 Series. It's a brute. It's over 5 years old now and it's still running strong in hot SoCal. I use it because I run a fridge with no second battery. It has not let me down yet. Highly recommended if you can handle the cost and weight.
