84 month factory battery lead acid

has a build date of 4/19, 5 years old. still works but don't want to be stranded out in the desert. in las vegas and batteries usually last 4 years in our heat. my 4runner is always garaged unless out exploring though. have had great success with toyota batteries. don't understand how toyota can make an 84 month lead acid battery but no one else can.

was thinking of getting a duracell agm to replace.

has anyone had an 84 month battery last that long?

 

I am with you. I’ve been off-roading in Utah and you can drive 25 miles in any direction and not see anything but sheep. I’d replace it.

 

What is the best replacement battery

 

My 2019 also running with original Panasonic battery. I have a emergency jump start battery pack. I'm thinking to wait till I see some hesitation in starting until I replace the battery.

I have a generic battery pack which works for years but this Noco one seems to be the fav around others.
https://amzn.to/3UVTtrw

4Runner alternator will not charge Duracell unless you make modifications to charging system.
Duracell AGM needs 13.8V-14.6V to charge and my scanguage II shows 13.3V-13.4V on regular driving.




When my 4Runner need a new battery I'm most likely buy a cheap Walmart battery.

 

This was my choice on the battery and voltage booster:
https://voltageboosterpro.com/product/og/

Others use different means or products.
Popular one is ... https://www.arclightleds.com/collec...ooster-5th-gen-4runner-fj-cruiser-pg2tb-brs6a

 

The original battery in my 2013 lasted 9 years. With your use case, I probably wouldn't push it that far.

I also second keeping one of the booster packs in the I keep one under my seat, I've used it a few times to help myself or others and it's definitely come in clutch.

 

well, crap. i did not know this. i wouldn't be opposed to buying another toyota battery. they seem to last

 

i always carry a booster lithium thing, i like the microstart units. the costco ones are complete crap. can't believe costco sells them

 

Costco is just a big box Walmart. I enjoy going to the dentist more than going there.

 

The battery in our 2019 started giving us problems last Nov:

https://www.4runners.com/threads/battery-drain-problems.35113/#post-517406

 

I have always replaced batteries after 4 years. They always seem to fail otherwise at the worst time and place.

 

Yeah, I've never had a battery fail in the auto parts store parking lot.

 

I go Sam's Club.

Even for my marine batteries.

 

My 2019 OEM battery just died about 6 months ago.

 

What you end up replacing it with?

 

My 2010 Corolla had an Interstate battery in it when I bought it in 2019. I had a glitch that was draining the battery and it went dead flat several times in Sub-Zero weather. I would charge the battery and have it checked at the local Advance Auto and it always checked out good. I finally replaced it this spring right before I traded it off. I've never seen a battery take that much abuse and keep on ticking.

 

Batteries will last a long time if they are cared for.

Don't discharge a lead acid, (LA), starting battery more than 50 %. Discharging further shortens life. Never store the battery in a discharged state. Usually not a problem w/ a starter battery, but heads up. Never allow a LA batt to discharge completely. (Thanks for auto shutoff headlights!) Heat is death to LA batts. Not only does it stress them electrically but they can lose electrolyte. Automotive batts must either contain an internal explosion or vent the products of combustion. Making an explosion proof case is $$$$ so batteries, whether "sealed" or open, vent. (They produce hydrogen while charging.) And that can lead to electrolyte loss. In the old days we added water, with today's batts that may not be possible. (I'm not talking about glass mat batts here because I never applied them. So I can't address them.)

I bought a '15 from Maryland that had a six year old OEM batt. I got 1 TX summer out of it and the heat killed it. I buy the cheapest starter batts I can get. Three years is avg life it seems. So the guarentee doesn't pay if buying a more expensive unit.

I don't doubt you could get 8 years out of a battery. Treat it right, manage the electrolyte and don't smoke, drink or run around with loose women...

I've seen many sets of high voltage switchgear with 20 year old lead acid cells...