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  2. Automotive battery - Wikipedia

    en.wikipedia.org/wiki/Automotive_battery

    While the engine is running most of the power is provided by the alternator, which includes a voltage regulator to keep the output between 13.5 and 14.5 V. Modern SLI batteries are lead-acid type, using six series-connected cells to provide a nominal 12-volt system (in most passenger vehicles and light trucks), or twelve cells for a 24-volt ...

  3. Why Do Electric Cars Still Use 12-Volt Batteries?

    www.aol.com/why-electric-cars-still-12-150000652...

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  4. Run-time estimation of system and sub-system level power ...

    en.wikipedia.org/wiki/Run-time_estimation_of...

    The model needs to be highly reliable, fast, and it also should have run-time estimation capability that does not increase overhead. The model should be simple and easily adoptable across different platforms. The purposed run-time power estimation requires a first order linear operation on a single power metric, reducing estimation overhead. [14]

  5. Peukert's law - Wikipedia

    en.wikipedia.org/wiki/Peukert's_law

    Peukert's law becomes a key issue in a battery electric vehicle, where batteries rated, for example, at a 20-hour discharge time are used at a much shorter discharge time of about 1 hour. At high load currents the internal resistance of a real battery dissipates significant power, reducing the power (watts) available to the load in addition to ...

  6. State of charge - Wikipedia

    en.wikipedia.org/wiki/State_of_charge

    In a battery electric vehicle (BEV), the state of charge indicates the remaining energy in the battery pack. [4] It is the equivalent of a fuel gauge.. The state of charge can help to reduce electrical car's owners' anxiety when they are waiting in the line or stay at home since it will reflect the progress of charging and let owners know when it will be ready. [5]

  7. Uninterruptible power supply - Wikipedia

    en.wikipedia.org/wiki/Uninterruptible_power_supply

    The run-time for a battery-operated UPS depends on the type and size of batteries and rate of discharge, and the efficiency of the inverter. The total capacity of a lead–acid battery is a function of the rate at which it is discharged, which is described as Peukert's law. Manufacturers supply run-time rating in minutes for packaged UPS systems.

  8. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    This battery, introduced in 1901, was very common in continental Europe until the 1970s. It usually contains three B cells in series. In Switzerland as of 2008, 4.5-volt batteries account for only 1% of primary battery sales. [89] PP3, 9-volt, or E [90] Radio battery Smoke alarm battery Square battery Transistor battery 006P MN1604

  9. Lead–acid battery - Wikipedia

    en.wikipedia.org/wiki/Lead–acid_battery

    The sum of the molecular masses of the reactants is 642.6 g/mole, so theoretically a cell can produce two faradays of charge (192,971 coulombs) from 642.6 g of reactants, or 83.4 ampere-hours per kilogram for a 2-volt cell (or 13.9 ampere-hours per kilogram for a 12-volt battery).