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Have you considered a solar panel charger?
I believe its the GREEN technologies that stifle the alternator for a full or close to full recharge.
 

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Having ordered a 2024, I got a pdf of the Owners Manual. In the Spec sections they list the following.

Key Ignitions use Subaru LN2 Battery SOA821B200

Push Button Start use Q85 Battery SOA821B800 ( Enhanced Flooded Battery ) Still must be check for water levels.

Don't know what came in MY14 Impreza, but it was replaced 2 times in the first 2 years. Once out of warranty I replaced it with a group 35 AGM from NAPA and have never had a problem since late 2016.

If things have not changed, and it sounds like they haven't, I will have another AGM in my future after warranty expires.
 

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...Don't know what came in MY14 Impreza, but it was replaced 2 times in the first 2 years.
2015 XV Crosstrek Limited battery dead on arrival second winter.
 

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My '11 Outback had its OEM battery for about 5 years until I allowed a friend with a battery tester show me that my battery was getting weak and I should replace it before winter set in. I did, but the car was sold at 10 years old and I never had any problems.

My '19 Crosstrek which was a Demo/courtesy vehicle prior to my purchasing, is still on it's OE battery with no problems, including a time when I accidentally bumped a dome light and killed the battery overnight. A jump, a dealer testing (I am very good friends with the service manager) to determine the battery was fine, and we are trucking along, just like the old Dead song.

I don't subscribe to the saw about OEM batteries being wholesale crap. Yes, there will be the few that fail prematurely but then again so will there be aftermarket batteries that will fail as well.

As for Costco and Wally World batteries, remember that those batteries, while showing a brand name, are built specifically for the stores in question to their pricing parameters. And that goes for anything else they and others like them sell. The brand may be a familiar name, but the quality is NOT exactly the same.

As for the OP and the problems with the dealer and supplying a replacement battery, I'd say that part of the problem is likely the dealership service department itself. And pinching a battery from another vehicle, even for the short term until a new one arrives is not only a good idea, its good will expression.

And a call to SOA will go a long way to get the problem solved too.
 

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2021 Crosstrek Limited
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They like the Goldilocks Zone...
How does heat affect my battery?
Hot weather means high temperatures under the hood, which accelerates corrosion inside the battery. It can also cause water to evaporate out of the battery's liquid electrolyte. This can result in decreased battery capacity, a weakened ability to start an engine and, ultimately, shorter battery life.
 

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'18 and '19 Crosstrek Limiteds
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How does heat affect my battery?
Hot weather means high temperatures under the hood, which accelerates corrosion inside the battery. It can also cause water to evaporate out of the battery's liquid electrolyte. This can result in decreased battery capacity, a weakened ability to start an engine and, ultimately, shorter battery life.
Why an AGM can help if you're often in very hot or very cold temps.
 

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That鈥檚 a great suggestion to call Subaru
Exactly, the OP is saying the dealer can't replace the OEM battery under warranty. I would use that as an excuse to get a better one and ask Subaru to pay for it.
That鈥檚 a great suggestion to contact Subaru of America. When I complained to Subaru of America about being charged a $500 鈥溾漚cquisition fee鈥 when I leased my 2022 Subaru Crosstrek Sport from Diablo Subaru in Walnut Creek, Ca, I was really impressed how they handled my complaint. A rep called me back within a week of my sending the letter and said she would investigate. A week later she called me back and said the $500 went to Chase Bank鈥攏ot the dealer, even though they had just also raised the interest rate. Then she said she was emailing me a $500 coupon that could be used at any Subaru dealer for service or accessories! She also sent a free emergency kit bag plus two Subaru key chains! I don鈥檛 think I would get this kind of quick response from General Motors or any other brand!
 

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Hey guys, my 2022 Crosstrek Limited was completely dead all of a sudden a few days ago. I mean, fob not working, no sound, light, basically no electronics. I called the subaru roadside assitance and they jump started it and towed it to the nearest Subaru dealership. I got a call from the service guy at the dealership saying that my battery did fail and that it would need to be replaced which would be covered by my warranty to which I agreed. Here's the issue, it's been in the shop for 3 days and they're not giving me an ETA. The service guy told me that they get batteries delivered twice a day, but haven't been able to get the one specific to my car. In fact, he keeps insisting that there's not ETA for its delivery and that they've charged my original battery a bit and not sure how long it'll last, but yeah, basically I can pick it up if I want and they'll let me know when the battery arrives. I don't really need the car immediately and have told them to keep it for a day or two or more and see if they get the battery delivered, but the service guy's insistence on there being no ETA every time we talk makes me think he doesn't think it's gonna be delivered soon. Not quite sure how to proceed. I am neither a car guy nor someone who's been in this situation before, this is my first car ever.
Very strange. I thought that the battery group size is the same for all Subarus. My 2010 Forester and 2022 Crosstrek take the same size. I had the same issue with my Crosstrek two weeks ago. I only have 900 miles on it. The vehicle never saw rain or snow. Rarely drive it. The key off drain is pretty high due to all the electronics on the car. So if you don鈥檛 drive it pretty regularly, the battery goes through a cycle from fully charged to discharged. These are supposed to be EFB batteries in the vehicle due to the start / stop and electrical load. I just got my battery replaced for the exact same reason as you. So I also had them do a parasitic drain test. It passed the test and will be checking the open circuit voltage daily. 12.6 = fully charged while 12.4 = 50% and 12.2 = 25% state of charge.
 

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This seems to be becoming the norm, unfortunately. With the as of late "unpleasantness" and the "supply chain issues" more and more "service" departments are falling back on that excuse for not performing even the most simple and mundane tasks. Sure, there is a pinch of salt to be had with that statement.

With that said, the OEM batteries do not have the best of track records. Mine lasted just under 3 years before it collapsed.

Put a line item in your car maintenance budget for a battery replacement in 2 or 3 years. AGM has a good track record and is what I use.

To the "ask the dealer to swap a battery"...I've never seen that, ever. But worth a try.

Either way, this doesn't hunt with the way the dealer is putting this off. Run up the flag. No excuse for this today.

Oh, and welcome to the forums-tons and good information here and lots of good, knowledgeable folks!
I'm not sure if conditions are just rougher on batteries or something changed and they are made worse now. With my previous car, I bought a new batter for it five years ago. It was the biggest one O'Reily sold for it and came with a two year warranty. It never lasted two years, so they kept giving me a new battery. I was on the third (still covered under warranty from the first) when the car finally died.
 

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2016 Crosstrek
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I bought the best battery Advance sold years ago. When I went in for my third free one in less than 2 years, they told me something was wrong with my car and gave me my money back - no more warranty. I checked for draw and found nothing out of the ordinary. Bought an Interstate and that one was still in it 5 years later.
 

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a lot of "bad" batteries and "parasitic drain" during the pandemic
The cold, -33c, got mine but the vehicle was built Dec/17 so it gave me 5+ years, hot summers (47c) and cold winters, which I think is pretty good for an OE battery. Better Half's Crosstrek built Summer of '17 and OE battery is still going strong even after the same summers and winters. No complaints here.
 

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So my rallysport mechanic recommended the Optima Yellow Top Batteries OPT8040-218 D35 as a replacement to my 2014 Subaru Crosstrek OEM ibattery after the replacement (second) OEM battery started to poop out in cold weather up here in New England in 2019. I burned through 2 OEM car batteries in 4.5 years. I also run a lot of devices in my car (3 dash cams) in addition to an iPad for the rear camera video and sometimes my smartphone as well. I purchased the battery myself and my local Subaru dealership was happy to install it free of charge back in mid 2019. I haven't looked back and haven't had a power problem since. Car starts up in the cold like a champ. During the Pandemic, I tried to drive the car at least once a month for an hour. I also used a solar panel cigarette lighter trickle charger to keep the battery charged. Also gas starts to break down after 8-10 months anyway so best to use it all up in that time if you can.


For anyone else deciding that they may want a third party battery and not the OEM, make sure you get the right sized battery for your model. Most places (online included) will help verify if the battery you're thinking about will work with the model of your vehicle.
 

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I wonder how much of this premature is due to the start/stop system? I put the AutoStop Eliminator in my car, so we鈥檒l see. Only 7k so far鈥.BTW my nearest stealership has a 1 hour line, just to drop the darn thing off. Insane!!
 

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Skip the warranty replacement of the OEM battery.

After a day I would have shown up at the dealership, demanded my keys and left with my car.

Go to Costco and buy an interstate battery. Both of my cars have them and they have been great. And they only cost $100 if you give them your bad battery to avoid the core charge.
 

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'18 and '19 Crosstrek Limiteds
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Skip the warranty replacement of the OEM battery.

After a day I would have shown up at the dealership, demanded my keys and left with my car.

Go to Costco and buy an interstate battery. Both of my cars have them and they have been great. And they only cost $100 if you give them your bad battery to avoid the core charge.
Or upgrade to an AGM...
 
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