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  2. State of charge - Wikipedia

    en.wikipedia.org/wiki/State_of_charge

    State of charge (SoC) quantifies the remaining capacity available in a battery at a given time and in relation to a given state of ageing. [1] It is usually expressed as percentage (0% = empty; 100% = full). An alternative form of the same measure is the depth of discharge , calculated as 1

  3. Rechargeable battery - Wikipedia

    en.wikipedia.org/wiki/Rechargeable_battery

    A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.

  4. Zero-coupon bond - Wikipedia

    en.wikipedia.org/wiki/Zero-coupon_bond

    Zero coupon bonds have a duration equal to the bond's time to maturity, which makes them sensitive to any changes in the interest rates. Investment banks or dealers may separate coupons from the principal of coupon bonds, which is known as the residue, so that different investors may receive the principal and each of the coupon payments.

  5. Surface tension - Wikipedia

    en.wikipedia.org/wiki/Surface_tension

    Gibbs emphasized that for solids, the surface free energy may be completely different from surface stress (what he called surface tension): [13]: 315 the surface free energy is the work required to form the surface, while surface stress is the work required to stretch the surface. In the case of a two-fluid interface, there is no distinction ...

  6. Prince George's County, Maryland - Wikipedia

    en.wikipedia.org/wiki/Prince_George's_County...

    Of the 304,042 households, 36.8% had children under the age of 18 living with them, 40.1% were married couples living together, 20.4% had a female householder with no husband present, 33.1% were non-families, and 26.1% of all households were made up of individuals. The average household size was 2.78 and the average family size was 3.31.

  7. Compressed-air energy storage - Wikipedia

    en.wikipedia.org/wiki/Compressed-air_energy_storage

    Thus if 1.0 m 3 of air from the atmosphere is very slowly compressed into a 5 L bottle at 20 MPa (200 bar), then the potential energy stored is 530 kJ. A highly efficient air motor can transfer this into kinetic energy if it runs very slowly and manages to expand the air from its initial 20 MPa pressure down to 100 kPa (bottle completely "empty ...

  8. State of health - Wikipedia

    en.wikipedia.org/wiki/State_of_health

    State of health (SoH) is a figure of merit of the condition of a battery (or a cell, or a battery pack), compared to its ideal conditions.The unit of SoH is percent (100% = the battery's conditions match the battery's specifications).

  9. Electricity sector in India - Wikipedia

    en.wikipedia.org/wiki/Electricity_sector_in_India

    At a price of 2.75 ₹/kWh and 1.8 million kWh/MW yearly generation, this would result in a land annual productivity/yield of ₹ 1.0 million (US$12,000) per acre, which compares favorably with many industrial areas and is many times more than the best productive irrigated agriculture lands. [176]

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