Jeep Garage  - Jeep Forum banner

21 - 34 of 34 Posts

·
Registered
Joined
·
37 Posts
I have the 2012 WK2 Laredo with the 5.7, i have roughly 135K on it and i still have the Original battery
It starts and runs fine but i have read articles that say you should replace your battery after 4 or 5 years
clearly mine is 9 years old but as i said it runs good. So should i replace it or just keep going until something
happens?. I've gone thru 2 water pumps radiator and an alternator but the Battery just keeps working
I’d say you got your money’s worth. Lol Seriously though, get’r done. You’ve been lucky. Depending on where you are, the first hot day could leave you in the lurch. A dead battery seldom happens at a convenient time so save yourself the grief!
 

·
Registered
Joined
·
13 Posts
Ya I thought they used bolt on for the bolts they were so tight idk why they would make them like that for the battery. I have a good ratchet set but no sockets that were deep enough for the bolts and my local autozone didnt have anything and I didn't know where else to go except another parts store or a repair shop so I got it out without removing the plate and got the new one in and they were HEAVY it was a workout lol
233692
 

·
Registered
Joined
·
4 Posts
I bought a Champion brand AGM from Pep Boys a year and a half ago. Black Friday special -- $127 plus a $50 rebate! It has a 48 month warranty, good CCA specs, and the price included install. One of the best deals I've ever found on anything.

Odyssey is premium priced brand. I don't know enough to know what the justification is for that premium.
Dang my local pep boys wanted to charge me almost $340 to replace but where I live in LA everything automotive is super expensive cars, parts, insurance, registration, repairs, GAS its all more expensive than everywhere in the middle of the country they pretty much bury you to be able to drive around here and the real estate is even worse.
 

·
Registered
Joined
·
4 Posts
You've certainly got your money's worth from the original battery, the practical thing to do would be to replace it at your local shop at your convenience, as opposed to paying more and may be waiting a day for its arrival while on a trip.

Last fall my 2014 Trailhawk needed a new battery in Moab, but there were warning signs beforehand. My vehicle has the start-stop system, originally it would be ready -battery fully charged that is- a minute after starting, eventually it took 20 minutes and then hours and then never came up to nominal voltage, allowing Start/Stop to operate. During those times I noticed the battery system display that it was charging at 14.5 volts then 14.7 and 14.9.

What that told me is that it had to raise the voltage more than a volt in order for the system to be able to push charge back into the battery, a clear warning sign. Originally it used to charge the system while running at 14.2, or so only a half a volt above the nominal battery voltage.

If your vehicle has a system that displays the charging system voltage set it in that mode and watch what it reads (very briefly) as you initially start the vehicle, and then see what it's charging at once the vehicle is running, I would say that if you're more than 14.5 volts while running and anything less than 13.4 while stopped, your battery plates are somewhat oxidized, actually sulfated. This restricts the charging and requires the higher voltage.

I wish I had the website address, but I learned all of this stuff on a battery technology and testing website about 6 months ago. You might get lucky and find it. It shows how batteries are constructed now to give much longer life, and prevent cells from ever shorting, which used to be the most common failure of batteries. High quality batteries now have the lead plates inserted in plastic sleeves so that they can never touch and thus never short. So the only way they really die now is age and continuous cycles of discharging and recharging and sulfatng up the plates. The way that is seen is through the higher charging voltages.

Hope this helps.
 

·
Registered
Joined
·
15 Posts
You've certainly got your money's worth from the original battery, the practical thing to do would be to replace it at your local shop at your convenience, as opposed to paying more and may be waiting a day for its arrival while on a trip.

Last fall my 2014 Trailhawk needed a new battery in Moab, but there were warning signs beforehand. My vehicle has the start-stop system, originally it would be ready -battery fully charged that is- a minute after starting, eventually it took 20 minutes and then hours and then never came up to nominal voltage, allowing Start/Stop to operate. During those times I noticed the battery system display that it was charging at 14.5 volts then 14.7 and 14.9.

What that told me is that it had to raise the voltage more than a volt in order for the system to be able to push charge back into the battery, a clear warning sign. Originally it used to charge the system while running at 14.2, or so only a half a volt above the nominal battery voltage.

If your vehicle has a system that displays the charging system voltage set it in that mode and watch what it reads (very briefly) as you initially start the vehicle, and then see what it's charging at once the vehicle is running, I would say that if you're more than 14.5 volts while running and anything less than 13.4 while stopped, your battery plates are somewhat oxidized, actually sulfated. This restricts the charging and requires the higher voltage.

I wish I had the website address, but I learned all of this stuff on a battery technology and testing website about 6 months ago. You might get lucky and find it. It shows how batteries are constructed now to give much longer life, and prevent cells from ever shorting, which used to be the most common failure of batteries. High quality batteries now have the lead plates inserted in plastic sleeves so that they can never touch and thus never short. So the only way they really die now is age and continuous cycles of discharging and recharging and sulfatng up the plates. The way that is seen is through the higher charging voltages.

Hope this helps.
You might want to look into a 3 step charger for AMG batteries I got one that also repairers sulfatng of the plates if not to bad. I got one for $26 off Ebay a lot less than $300 for a new battery
 

·
Registered
2020 Jeep Grand Cherokee Summit 3.6L 4x2
Joined
·
1,611 Posts
I keep our vehicles on Battery Tenders in our garage👍.
 

·
Registered
Joined
·
4 Posts
I keep our vehicles on Battery Tenders in our garage👍.
Yeah, I have read about the three-stage charging for AGM batteries. But other than the battery tender for my motorcycle I don't really have any battery chargers. My Jeep is mostly limited to multi-day road trips and out-of-town excursions of 50-60 miles, which comes to once or twice a week and then some 2-week trips a few times a year, where is my Mazda 3 is my around town car which gets used pretty much at least every other day for a trip or two.

I just have to hope that each vehicle can charge its battery to the best of its ability. If I only had one vehicle I might monitor more closely and get a specialized charger. I guess I always compare it to when I was growing up with vented batteries that we had to keep topped off, going bad after just two or three years, either from going dry, or a mechanical voltage regulator failing and letting it die or cook, it seems that batteries lasting four, five and six years isn't really much of an issue to me. I guess it's my general feeling is that if I can go out and start a vehicle that I haven't run in maybe two weeks and it starts I'm a happy camper.
 

·
Registered
Joined
·
15 Posts
Dang my local pep boys wanted to charge me almost $340 to replace but where I live in LA everything automotive is super expensive cars, parts, insurance, registration, repairs, GAS its all more expensive than everywhere in the middle of the country they pretty much bury you to be able to drive around here and the real estate is even worse.
That plus fire floods mud slides earth quarks power outages and droughts sounds like a fun place to live
 

·
Registered
Joined
·
8 Posts
Discussion Starter · #29 ·
Replace it for the piece of mind unless your selling it soon. I bought the Interstate AGM from Costco without researching, only to find out the Advance Auto Platinum Diehard is the same battery as the Interstate. Use their 25% off code and save some money.
unfortunately they wont allow you to use the 25% discount for the batteries, only speed perks
 

·
Registered
JGC
Joined
·
380 Posts
@LexLuther Unfortunately true. Found this response from Advance Auto on another site: "As of December 10, 2020 we have discontinued additional discounts other than Speed Perks to be used on battery purchases."
So I'm back to recommending the Interstate H7 from Costco, where I'd bought mine.
 

·
Registered
2018 Trailhawk
Joined
·
138 Posts
I got a great deal at BatteriesPlus. On St. Pat's day they had a 20% off coupon and that plus the 4-yr warranty sealed the deal. They frequently have 10% off coupons floating around and keep emailing them to me. I don't have Costco around here, and Sam's was about the same price as BatteriesPlus with only a 36 mo. warranty.
 

·
Registered
Grand Cherokee
Joined
·
4,074 Posts
I guess discuss with jeep dealer .....
I can tell you how that discussion will go, "Oh yes, you need a new battery right away, we'll get one in your vehicle in a jiffy"....
3 hours later, and charged 3-4 times as much as it would cost to replace the battery yourself in 1/6th the time you'll have a new battery.....

Even the honest dealers, which are more and more rare these days, aren't going to pass up on making money from a customer that is asking if he should spend the money and inclined to do it.

For the original poster, no one has a crystal ball, your battery is older than most battery's have lasted in this vehicle. Your choice is to continue to use it until it fails to start the vehicle or go ahead and replace it now before it encounters those problems.

A jump start battery is a handy tool to have, and not that expensive anymore, so that's another option already mentioned, get a jumpstart battery so you don't get stranded and then wait till the battery fails to replace it.

That is really all anyone can tell you, you simply have to decide on your own personal risk/benefit analysis on what to do......
 

·
Registered
2018 Trailhawk
Joined
·
138 Posts
Happy Monday! For those considering a battery purchase: Batteries plus is offering 15% off battery purchase if you buy on line and pickup at store. The discount code is EMAIL15 and offer is good 10 May 2021. Hope this helps someone out. They also installed the battery for me for no charge and used a memory saver plugged into the OBDII to avoid a hard reset of everything.
 

·
Registered
Joined
·
249 Posts
I replaced my battery recently at around 55k miles when I noticed the starter seemed slightly weaker compared to normal. I also noticed voltage fluctuations with engine running, whereas it has always stayed at one voltage. The next clue was when remote start would fail, and proper battery voltage and amperage is one of the things required for it to work.

I replaced it with a higher rated CCA Interstate AGM and it is amazingly strong sounding now. Voltage is constant. No remote start issues.

I carry jumper battery packs in each vehicle but I hate having issues. I have had batteries fail with zero warning (seemed particularly common on my Infinitis)--they'd sound strong one day with no warnings signs, and next day would be 100% dead.
 
21 - 34 of 34 Posts
Top