14V

14V denotes a potential difference of 14 volts in a direct current (DC) electrical system. It is commonly encountered as a nominal or regulated voltage in various devices and is sometimes used as a charging or operating voltage within specific equipment. In practice, the exact voltage labeled as 14V can vary within a tolerance and depending on the source and load conditions.

In automotive and power-supply contexts, 14V is most often associated with charging the 12V lead-acid battery used in many vehicles. The vehicle alternator or charging circuit typically regulates the system to about 13.8 to 14.4 volts when the engine is running. This higher level over the battery’s resting voltage ensures efficient charging and proper battery health, with regulation that may adjust for temperature and other factors. Different vehicle models and alternators may yield slightly different charging voltages within this range.

Other applications include cordless power tools and battery packs that use nominal voltages around 14.4V. Such packs are usually composed of cells arranged to present a 14.4V nominal voltage, with charging voltages that may reach around 16V to 16.8V depending on cell chemistry and protection circuitry. Some electronic power adapters also provide a 14V DC output within specified tolerances to suit devices designed for that voltage band.

Measurement and safety considerations: A 14V supply is not a universal standard and tolerances vary, typically a few percent. Under load, voltage can dip; in charging modes it may rise. When handling DC power, observe correct polarity, use appropriate fusing, insulation, and precautions to avoid short circuits, overheating, or exposure to moisture.

See also: DC voltage, 12V systems, 24V systems, battery charging, power supply.