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· Premium Member
2022 Forester Limited 2018 Forester XT
16,715 Posts
'11 with OEM battery. Slow to crank in 15F weather. Checked battery quick n dirty with a multimeter.

12.6V resting
14.6 with engine running.

Battery would appear to be ok, is this just due to extreme cold? I would figure with the thin synthetic oil we run in these it would not be as sluggish....
Take it in to Autozone/Advance and get it checked. Voltages seem OK but that's not always the whole story. Now I have the 08 and replaced my original battery at 90+K miles even though it was fine. Never had your issue.
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