Page Content 1. UT Extension serves the citizens of Fayette County with educational programs in the areas of Agriculture, Family and Consumer Sciences, Community Resource Development, and 4-H Youth Development.
A large globe light, like around a vanity mirror, that is rated at 25 watts consumes exactly the same amount of energy as a small refrigerator light bulb also rated at 25 watts..  Size as a power ratingThe wattage rating of a light bulb is directly proportional to energy consumed by that light bulb. A light bulb rated at 60 watts consumes 50% more energy than a 40 watt light bulb.
individual CELLS are connected together 'in series' to make batteries of either 12 volt (6 cells) or 24 volt (12 cells). Although a battery is called a '12 volt' battery, its voltage varies from about 12.6 volts down to. 10 volts when it is discharging and can rise to 15 or 16 volts during charging. It is very. important, however, to limit the maximum battery voltage during charging otherwise the. battery will be damaged.