Quote:
Originally Posted by DoubleF
Hail Mary wise, I'm stuck wondering whether trickle charging or warming with block heater is more useful right now for a battery too cold to have enough charge.
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At -30 block heater is way better. It takes probably 3x less energy to crank the engine when the oil is not a semi solid. Below around -35 you need both, chemical reaction in the battery slows to a crawl.