2016 3.6 Battery Won't Start the Engine After Sitting Overnight - Page 2 - Subaru Outback - Subaru Outback Forums
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post #11 of 14 (permalink) Old 12-12-2018, 11:52 AM
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Having the same issue with my 2014. Go out after the car sits a couple days and it won't turn over. Dead. 3rd Subaru. First time it has happened. Glad for this forum. I will go get an aftermarket battery and hopefully that will resolve it.

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post #12 of 14 (permalink) Old 12-12-2018, 12:02 PM
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Originally Posted by 4Subarus View Post
Having the same issue with my 2014. Go out after the car sits a couple days and it won't turn over. Dead. 3rd Subaru. First time it has happened. Glad for this forum. I will go get an aftermarket battery and hopefully that will resolve it.
not just a aftermarket battery:

something with more reserve or more CCA.

plenty of long battery threads about what the spec should be. (and you found only one)

but maybe @Fibber2 or @Brucey could just give you one spec that they chose after careful thought for a cold climate (based on your IP)


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post #13 of 14 (permalink) Old 12-12-2018, 11:39 PM
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Did someone call out to me? ;-)

I still have the old battery (a Group 25 with a mere 490 CCA and around 80 minutes reserve) still hanging around in my garage, two years after pulling it from my 2014 Outback. It's an OK battery, and if I top it off occasionally it can pinch hit on my whole house standby generator and other apps, but it was no longer suitable to reliably start the car on a winter's day after sitting for a few. A shame.

The solution was fairly painless. The tray spot is large enough to fit a Group 24 battery. It's the same width and height as the Group 25, but about an inch longer. It still fits fine, the cables fit fine, but you'll have to cut the backside of the 'battery cozy' and duct tape it back up after modifying the corner folds. No big deal.

The advantage of this swap? A healthy increase in CCA to around 700, and a huge increase in the (IMHO more important specification) Reserve Capacity to around 130 minutes. Reserve capacity is the parasitic loss fighter, and why I value it over CCA. Still, these are the increase you'll see in many basic, economical conventional flooded cell batteries like the Walmart Everstart Maxx Group 24. With a good warranty, plenty of outlets nearby should you ever need to exercise that warranty, high ratings from Consumers, great specs and low cost, it's likely the best bang for the buck you'll find.

There are other solutions like the Group 34. It fits, but is an inch lower in height. It's a bit peaky with even higher CCA, but lower RC. To me, that doesn't make much sense when a major concern is parasitic loss.

2002 OBW base model with automatic. Added: CD player, Security System, tweeters & subwoofer, trailer hitch, lighting mods, cabin filters, hood deflector, drivers lumbar mods, winter tires.
2014 OBW Premium, CVT & Moonroof. Added: trailer hitch, lighting mods, upgraded horn, winter tire/wheel/TPMS package.
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post #14 of 14 (permalink) Old 01-03-2019, 08:07 PM
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I have a new 2019 Outback. Only done 600km. On Dec23rd, we did a 230km trip. Presume that should have got battery pretty well fully charged. Since then car has not been used. Doors had been opened a few times, then I backed out this morning to load for a long road trip starting Saturday. Had doors open and closed while loading.

After loading, went to start - No start and lights went off. At first got green light on start button. Later it was orange. Checked battery voltage - 11.7V. On charge now. Smart charger now up tp 7amps, indicating need.

Reading posts above, I am concerned. If I wanted to go on vacation and leave Outback at airport for 2 weeks, it looks like there would be a good chance of the battery being dead by time I got back.

Goes against grain to go buy a bigger battery for a brand new car, but maybe that is answer?

Was going to call 360 CARE, but all they would be able to do is boost. So I decided to charge myself tonight and see what happens. Tomorrow being Friday, not much hope at dealer, but might at least ask if they can check battery and charge system.
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