Quote:
Originally Posted by M2M
I can think of one reason. Although this setup still gives you 6v I think it boosts the cold cranking amps tremendously which would be good to have in Arctic winter temperatures of below -40. Your vehicle’s battery loses 50% of its power when the temperature falls below 0 degrees F (-18 degrees C).
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Try this:
https://www.amazon.com/gp/product/B000I8XD9E/
80 Watt 36" Battery Thermal Wrap. Keeps the battery warm. Much cheaper than buying a second Optima red-top.