[Raymond3006]

@Ralph_Thornton,

That question should be easy ... with a flashlight ... and a good pair of Glasses ...... ;

I went from OEM Stock lawn-mower-battery to a 900-CCA ... all by visual verification.

 

[Black21Limited]

I had the Group 35 AGM for our 2017 shipped, mainly because no one local had one in AGM.

16 miles round trip to go pick it up, AGM or not, without having to wait a day or two usually wins out for me, unless you can get a smoking deal online with free shipping.

Not to mention returns (if needed) are a lot less complicated on something like that, especially if you don't have Amazon Prime.

 

[Raymond3006]

AGM Batteries should require a different Charging Program than a Flooded-Cell Lead-Acid battery ......

 

[Ralph_Thornton]

Yes, the Group 35 fits in just fine. I just replaced mine with an Interstate battery. 2015 Forester

Thanks Tane. I installed a new NAPA battery with 640 Cold Cranking Amps this morning. All is Good.

 

[Ralph_Thornton]

Thanks everyone for the comments. I installed a new NAPA battery with 640 Cold Cranking Amps into my 2015 Forester Limited this morning. All is Good.

 

[Raymond3006]

A Walmart EverStart MAXX34n will get you 800-cca ; and it still leaves room enough for the new battery to move around about 1-inch in the battery tray .... Not sure if there is an even bigger battery !!!!
But to those who tried to tell all of us several years ago that "X" , "Y" , and "Z" were all reasons to not ever touch your battery ............... : pppphhttttttttttttttttttttt !

 

[Fibber2]

I installed a new NAPA battery with 640 Cold Cranking Amps into my 2015 Outback Limited 2015 Forester Limited this morning.

WAIT! A Gen-5 OUTBACK? I must have missed something here....

Are you on SubaruOutback.org ???? There are threads about upgrading Gen-4 and Gen-5 models (I did it on my G-4 2014, and no issues on your G-5 2015) from either the stock Group 25 (yes, 25 - it's a reverse terminal Group 35) to a Group 24 battery. The battery tray is already oversized on those models, the battery fits with zero modification (just slice and tape the battery cozy. You go from 575 CCA / 90 minute reserve to 700+ CCA / 120 minute reserve.

 

[Fibber2]

A WalMart EverStart MAXX34N will get you 800-CCA ; and it still leaves room enough for the new battery to move around about 1-Inch in the Battery Tray .... Not sure if there is an even bigger battery !!!!

Just to keep the confusion level in check....

1) This will work on an Outback, but not a Forester due to the reverse poles. The Outback comes stock with a Group 25 battery, which is a reverse pole Group 35 battery. It also comes with an oversized battery tray that can accommodate a Group 34 or the much preferred Group 24 battery.

2) The Group 34 is actually a poor choice for an Outback. It was designed to meet the needs of low profile hoods on some other make vehicles, and is 1+ inch in height lower than an equivalent L x W Group 24 battery. It's a sprinter, and not a long distance marathon runner. The shorter plates (augmented by a tighter spacing and a few plates more) does give a higher CCA, but at the expense of lower Reserve Capacity. If you are dealing with habitual low Subaru charge algorithms and vampire current issues leading to poor starts, then you should be shopping for Reserve Capacity as your first priority.

 

[Raymond3006]

Practically any-battery beats (hands-down !!! ) the lawn-mower-battery that was oem ..... !!! Combined with the oem-design of the ecm-programming of the electrical charging system = dead-batteries !

 

[Theseus161]

I’m coveting the Odyssey Group 35 AGM.
$350!

 

[DragonSubie7]

Just in case no one else noticed, the OP has already acquired and installed a battery replacement in his vehicle as noted in Post #25, so I doubt recommending an alternative, at this point, will inspire him to replace it..

 

[Kevin]

^ Indeed - the thread title does say "Solved"

 

[DragonSubie7]

Touche'

 

[Fibber2]

I installed a new NAPA battery with 640 Cold Cranking Amps into my 2015 Outback Limited 2015 Forester Limited this morning. All is Good.

OK, let's just assume that the OP is confused and likely put the battery into a Forester.....

 

[Ralph_Thornton]

WAIT! A Gen-5 OUTBACK? I must have missed something here....

Bad typing. The vehicle in question for this thread is indeed a 2015 Forester. But I also have a 2020 Outback. And YES, I am on SubaruOutback.org in addition to this group.

OK, let's just assume that the OP is confused and likely put the battery into a Forester....

Yes I errored in typing. I installed the battery in my Forester. But I also have a 2020 Outback. My bad. Sorry.

 

[Kevin]

@Ralph_Thornton I have adjusted your signature; pls update it if you no longer have the 2007 thanks