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  2. Ampere-hour - Wikipedia

    en.wikipedia.org/wiki/Ampere-hour

    An ampere-hour or amp-hour (symbol: A⋅h or A h; often simplified as Ah) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing for one hour, or 3,600 coulombs. [1][2] The commonly seen milliampere-hour (symbol: mA⋅h, mA h, often ...

  3. Watt - Wikipedia

    en.wikipedia.org/wiki/Watt

    0.7375621 ft⋅lbf/s = 0.001341022 hp. The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m 2 ⋅s −3. [1][2][3] It is used to quantify the rate of energy transfer. The watt is named in honor of James Watt (1736–1819), an 18th-century Scottish inventor ...

  4. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    External links. List of battery sizes. 3LR12 (4.5-volt), D, C, AA, AAA, AAAA (1.5-volt), A23 (12-volt), PP3 (9-volt), CR2032 (3-volt), and LR44 (1.5-volt) batteries (Matchstick for reference) This is a list of the sizes, shapes, and general characteristics of some common primary and secondary battery types in household, automotive and light ...

  5. Ampere - Wikipedia

    en.wikipedia.org/wiki/Ampere

    The ampere (/ ˈæmpɛər / AM-pair, US: / ˈæmpɪər / AM-peer; [1][2][3] symbol: A), [4] often shortened to amp, [5] is the unit of electric current in the International System of Units (SI). One ampere is equal to 1 coulomb (C) moving past a point per second. [6][7][8] It is named after French mathematician and physicist André-Marie ...

  6. Coulomb - Wikipedia

    en.wikipedia.org/wiki/Coulomb

    The coulomb (symbol: C) is the unit of electric charge in the International System of Units (SI). [1][2] It is equal to the electric charge delivered by a 1 ampere current in 1 second and is defined in terms of the elementary charge e, at about 6.241 509 × 1018 e. [2][1]

  7. Kilowatt-hour - Wikipedia

    en.wikipedia.org/wiki/Kilowatt-hour

    A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a non-SI unit of energy equal to 3.6 megajoules (MJ) in SI units which is the energy delivered by one kilowatt of power for one hour. Kilowatt-hours are a common billing unit for electrical energy supplied by electric utilities. Metric prefixes are used for multiples and ...

  8. List of SI electromagnetism units - Wikipedia

    en.wikipedia.org/wiki/List_of_SI...

    Symbol [1] Name of quantity Unit name Symbol Base units E energy: joule: J = C⋅V = W⋅s kg⋅m 2 ⋅s −2: Q electric charge: coulomb: C A⋅s I electric current: ampere

  9. Seasonal energy efficiency ratio - Wikipedia

    en.wikipedia.org/wiki/Seasonal_energy_efficiency...

    The EER uses mixed units, so it does not have an immediate physical sense and is obtained by multiplying the COP by the conversion factor from BTUs to watt-hours: EER = 3.41214 × COP (see British thermal unit). The seasonal energy efficiency ratio (SEER) is also the COP (or EER) expressed in BTU/watt-hour, but instead of being evaluated at a ...