Join Date: Mar 2007
Location: Dutchess County, NY USA
Car: '14 Subi OBW, '02 Subi OBW (gone now, but well loved), '15 Toyota Sienna, '13 Honda CR-V
Feedback Score: 0 reviews
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.