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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]
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. Anderson plug for high amperage.
Charging a 12 V lead–acid car battery A mobile phone plugged in to an AC adapter for charging. A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it.
When passing AC, the maximum power of the Mennekes connector is 43 kW. [6] The IEC 62196 Type 1 connector (codified under SAE J1772) is the corresponding standard for single-phase AC charging in the United States, Canada, and South Korea. [7] J1772 has a maximum output of 19.2 kW. [8]
The polarity for 12 V DC sockets is center pin positive (+), outer collar negative (−). Reversed polarity will damage some electronic devices. Although the nominal voltage of a 12 V lead acid battery is 12 V DC, when the engine is running the car's battery charging system will bring the system voltage to 13.8 V DC or higher. [10]
An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.
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