AGM battery now standard replacement - Alfa Romeo Stelvio Forum
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post #1 of 18 (permalink) Old 10-22-2018, 02:01 PM Thread Starter
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AGM battery now standard replacement

I just had a standard, flooded battery replaced by AR with a AGM battery. The standard battery was a dealer-installed replacement for the OEM battery. It was a Mopar part# BBoH8800AC. AR agreed that it was the wrong battery and installed an Interstate MTX-49-H8 Absorbent Glass Matt (AGM) battery. AR and the dealer told me that an AGM battery was the correct replacement for the OEM Varta battery.
AGM batteries are much better than standard batteries for many reasons and are recommended for Stop-Start vehicles. FCA uses AGMs in their Cherokee line (and maybe throughout their vehicles with start-stop.)
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post #2 of 18 (permalink) Old 01-17-2019, 01:36 AM
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Hi Kidkarter, I'm in exactly the same predicament that you went through so I'm hoping you can help me by providing any supporting documentation or official communication from representatives of Alfa Romeo confirming that the Interstate MTX-49-H8 Absorbent Glass Matt (AGM) battery is the recommended equipment for the Stelvios.

I am currently communicating w/ Alfa Romeo Customer Care via email trying to request approval for the Interstate MTX-49-H8 Absorbent Glass Matt (AGM) battery because my dealer installed the wrong / substandard battery (BBAH8800AB) instead of the Interstate AGM battery. They had denied my request because I wasn't able to provide any official correspondence from Alfa Romeo supporting the Interstate AGM battery so I hope you can help.
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post #3 of 18 (permalink) Old 04-26-2019, 03:08 PM
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I have had other postings asking for help and adviceregarding the OEM Varta Enhanced Flooded Battery after an unexpected batterydrain and all the usual warning lights flashing a few months after purchase. I started a routine of topping off the batterycharge through the front under-the-hood jump start points using a smartcharger, with no issues. Then a coupleof weeks ago, drained battery and all the drama that goes with it again,although now better prepared mentally and emotionally. Topped off the battery and started thinkingagain about transitioning to an AGM. Didnít want to do the job myself, so I called the dealer. I said I didnít want to make a warrantyissue, just wanted to replace the battery with an AGM. Appointment made. Called the service/parts department of thedealer to be sure they had an AGM in stock. Called the parts department the day before the appointment to be sure ofAGM stock again. Confirmed both times.
Swap done, no sweat and when I started going to the cashier,told no charge, under warranty. Wow. I was in a hurry and didnítcheck (would have to take out the spare tire kit at the dealer). Today (3 days later) I tried to check thebattery exchange and saw it was a Mopar replacement EFB H8. Now I know an EFB is ok (Alfatech hasconfirmed elsewhere in the blog), but on the other hand, I was willing to payfor an AGM replacement. I love theStelvio, have had no issues crop up, other than the minor recalls, and learnedto live with the Varta taking a more proactive stance with all my carbatteries, topping off every couple of weeks or so. I give up and will live with the Moparreplacement, since they didnít charge me anything. My conclusion is that I really like my dealerservice, but still there is a vagueness about responses and knowledge whichmakes me wonder about their understanding. I am guessing they actually didnít understand my insistence on an AGMand wanted to save me money with a warranty replacement, which was a MoparEFB. Those of us who are car lovers, butnot technical enthusiast, bone up on batteries and make regular use of yoursmart charger.
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post #4 of 18 (permalink) Old 04-26-2019, 10:46 PM
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Recently (last month), my dealer replaced my OEM battery with MOPAR BBAH8800AC AGM battery (attaches picture). I think someone else in another thread was also given the same MOPAR AGM type battery and posted the similar picture as well. This is AGM type battery as shown in the picture but note that the part number is not the same as what Kidkarter and Whippersnap52 had posted earlier in this thread.
So, I think both MOPAR AGM and the Interstate AGM batteries are the “authorized’” batteries for AR.
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Last edited by simplyFast; 04-26-2019 at 11:00 PM. Reason: Clarify statement
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post #5 of 18 (permalink) Old 04-27-2019, 12:34 AM
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Quote:
Originally Posted by R Leong View Post
I have had other postings asking for help and adviceregarding the OEM Varta Enhanced Flooded Battery after an unexpected batterydrain and all the usual warning lights flashing a few months after purchase. I started a routine of topping off the batterycharge through the front under-the-hood jump start points using a smartcharger, with no issues. Then a coupleof weeks ago, drained battery and all the drama that goes with it again,although now better prepared mentally and emotionally. Topped off the battery and started thinkingagain about transitioning to an AGM. Didnít want to do the job myself, so I called the dealer. I said I didnít want to make a warrantyissue, just wanted to replace the battery with an AGM. Appointment made. Called the service/parts department of thedealer to be sure they had an AGM in stock. Called the parts department the day before the appointment to be sure ofAGM stock again. Confirmed both times.
Swap done, no sweat and when I started going to the cashier,told no charge, under warranty. Wow. I was in a hurry and didnítcheck (would have to take out the spare tire kit at the dealer). Today (3 days later) I tried to check thebattery exchange and saw it was a Mopar replacement EFB H8. Now I know an EFB is ok (Alfatech hasconfirmed elsewhere in the blog), but on the other hand, I was willing to payfor an AGM replacement. I love theStelvio, have had no issues crop up, other than the minor recalls, and learnedto live with the Varta taking a more proactive stance with all my carbatteries, topping off every couple of weeks or so. I give up and will live with the Moparreplacement, since they didnít charge me anything. My conclusion is that I really like my dealerservice, but still there is a vagueness about responses and knowledge whichmakes me wonder about their understanding. I am guessing they actually didnít understand my insistence on an AGMand wanted to save me money with a warranty replacement, which was a MoparEFB. Those of us who are car lovers, butnot technical enthusiast, bone up on batteries and make regular use of yoursmart charger.
If you live in a city with a shared garage and no outlets, it is not possible. In 2019, a new car with a new battery should not require a charge-up on a regular basis.
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post #6 of 18 (permalink) Old 04-27-2019, 10:32 AM
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'In 2019, a new car with a new battery should not require a charge-up on a regular basis."

2019? I'd say 70ish years, post WWII. I don't think my Dad ever even had a battery charger. not sure about my Grandpas.
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post #7 of 18 (permalink) Old 06-24-2019, 03:48 PM
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Interstate battery web site says the MTX 49 H8 is a flooded and not a AGM battery. My replacement was a Mopar BBAH8800 AB and says AGM on it.
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post #8 of 18 (permalink) Old 06-24-2019, 04:46 PM
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Interstate battery web site says the MTX 49 H8 is a flooded and not a AGM battery. My replacement was a Mopar BBAH8800 AB and says AGM on it.
That's strange. When I did a search, the Interstate web site says it is an AGM battery:

https://www.interstatebatteries.com/products/mtx-49/h8
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post #9 of 18 (permalink) Old 06-27-2019, 11:16 AM
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UNfortunately, with all the excessive electronics in our new vehicles, it is blatantly obvious the a majority of the electrical gremlins we deal with are caused by low voltage situations. Harvest, I would have to say if you drive your vehicle only weekly, or locally with lots of things on like cranked stereos (all have big watt rms now which sucks power), seat heaters, defrosters.........you will want to put it on a tender. Daily or every 2 -3 day drivers are fine. It's cars that sit a week or more. All of my newer vehicles except my Miata (no crap electronics ) , are tendered. My 3 Lotus needed them (2005,2010,2011), my 2 BMW's needed them (2008,2011), my Stelvio does, my Maserati does, my Range Rover does....I have never had a battery fail WITH A premature failure., The only dead battery I had was on a BMW that was going on 6yrs old. Most of my batteries lasted as long as I had the vehicle (up to ~8yrs). What am I doing differently???? BATTERY TENDER!!!!


I have 500mV models for my Lithium batteries or long term storage. You know you have a partially discharged battery when a 1amp charger runs overnight before going into trickle mode. I see this on EVERY vehicle if it hasn't been charged for a week or more. Everyone wants all the tech in their cars....it ALL takes power and unless the vehicle drives for 30-60 minutes, it does not top up a battery sufficiently ESPECIALLY in the winter. With Deltran quick connects properly mounted , it takes 15 seconds to plug in. Alfa is so well positioned , I didn't even bother, just use alligator clips...takes 20 seconds. BTW no electrical gremlins on my Alfa....wonder why???

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post #10 of 18 (permalink) Old 06-28-2019, 09:23 AM
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I don't keep my Stelvio on a battery tender, but every couple of weeks or so, I "top" off the battery with a low amp modern digital battery charger the analyzes and then shifts into a "tender" mode. I do this through the under the hood jumper posts. NO PROBLEMS. I capitalize to emphasize that. But I want to note that I still don't fully understand how the Stelvio battery system is set up. It seems that when I test the battery (through the built in analyzer on the charger) the battery is usually at 60 to 70 percent state of charge. I do the reading about an hour or so after I come back from a drive or even when the battery is cold. It varies. I admit that I use a cheap plug into the accessory outlet voltage meter to check voltage on a day to day basis. For a few hours after a charge up, I note that the meter reads low--below 12.4 volts--12.1, 12.3, up and down. But after driving for an hour or so, things seem to settle down and the meter consistently reads above 12.4 and above. So there is something about the battery and/or the battery minder I don't understand. But no ongoing problems.
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