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The actual voltage, matching the car battery's voltage, will be approximately 12.5 volts when dormant (less in cold conditions), approximately 14.5 volts when the engine and the alternator/generator are operating (more when cold), and may briefly drop as low as 5–6 volts during engine start due to the high temporary battery current usage. [12]
High-efficiency all-electric refrigerant compressors for air conditioning are starting to be used, especially in hybrid or all-electric vehicles. The cigarette lighter receptacle serves as a de facto standard for use of portable 12 volt equipment in or near an automobile, it is sometimes used with car charger to power devices with batteries.
Yuasa, a producer of 12-volt car batteries, says: “Cold temperatures directly affect the performance of car batteries. In fact, at zero degrees celsius a battery will lose about 30 per cent of ...
In 1954, the Nash Ambassador was the first American automobile to have a front-end, fully integrated heating, ventilating, and air-conditioning system. [11] [12] The Nash-Kelvinator corporation used its experience in refrigeration to introduce the automobile industry's first compact and affordable, single-unit heating and air conditioning ...
Batteries tend to perform best at about 70 degrees, according to Car and Driver. When temperatures fall, battery performance degrades, with some owners reporting a 10% to 20% reduced range when ...
After extensive preparatory work, resulting in the "List of Loads in the Automobile of the Year 2005", various automotive electrical system architectures were compared using the tool "MAESTrO" (12 V, 12 V/24 V DC, 12 V/48 V DC and 12 V/60 V AC) in the September 1995 workshop at the Massachusetts Institute of Technology (MIT/LEES). The finding ...