millicowatthour

The millicowatt-hour (mWh) is a unit of energy commonly used in the field of electronics and electrical engineering, particularly in the context of battery capacity and power consumption. It is a derived unit in the International System of Units (SI), equivalent to one-thousandth of a watt-hour (Wh). One watt-hour is the energy consumed by a device with a power rating of one watt operating for one hour.

The millicowatt-hour is often used to express the energy capacity of small batteries, such as those found in portable electronic devices, sensors, and other low-power applications. For example, a small coin cell battery might have a capacity of a few hundred millicowatt-hours.

To convert between millicowatt-hours and other units of energy, the following conversions are useful:

- 1 mWh = 3.6 joules (J)

- 1 mWh = 0.001 Wh

- 1 mWh = 2.7778 x 10^-7 kilowatt-hours (kWh)

In practical terms, the millicowatt-hour provides a convenient way to discuss and compare the energy storage capabilities of small-scale batteries and the energy consumption of low-power devices. It is particularly useful in the design and optimization of energy-efficient systems, where precise measurement of energy usage is crucial.