Watt Hours

Watt hours are a unit of energy that measures the total amount of electrical energy consumed or stored over time. It represents the product of power (watts) multiplied by time (hours), indicating how much energy a device uses during operation or how much energy a battery can store. For example, a 100-watt light bulb running for 2 hours consumes 200 watt hours of energy. This unit is commonly used to rate battery capacity and calculate energy consumption for electrical devices.