Test Car Battery Power Levels For Winter
If the battery is low, you can try charging it, but ensure the battery holds a charge.
Low temperatures automatically reduces battery cranking power, therefore you want to make sure the battery is fully charged during cold weather.
Check battery terminals for any corrosion. If there is corrosion around the terminals, clean them thoroughly.
Check battery fluid level. If the fluid is low, you can add distilled water.
Generally if the battery is more than 5 years old and shows signs of weakness, Chevrolet Cadillac of Bend suggests replacing the battery with a new one.