Hallo, I'm going to charge battery of my Focus. The out temperature is recently about -20'C and I feel, that I should improve level of my battery. How make it simple, but safely for Focus electronic and battery??? Can I not take out the battery of car? What with wires, can I leave them fastened to battery? Thx for eny hel, Max
I'm in the United States, in Michigan. I have to translate, that's about -4 F. Cold, but not terribly so.
Why do you want to charge your battery? Is your battery discharged? I've gone through colder weather without having to charge the battery. However, if the car is not in perfect running order, getting it started at that temperature is tough.
When the engine is cold, it's harder to turn it over, drawing more current from your battery, while the temperature reduces the battery's effective capacity.
You can charge the battery in the car with a battery charger. With a "dumb" charger, you have to be careful not to leave the battery on charge for too long. With a "smart" charger, you don't have to worry about that.
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