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  2. Battery charger - Wikipedia

    en.wikipedia.org/wiki/Battery_charger

    A simple charger typically does not alter its output based on charging time or the charge on the battery. This simplicity means that a simple charger is inexpensive, but there are tradeoffs. Typically, a carefully designed simple charger takes longer to charge a battery because it is set to use a lower (i.e., safer) charging rate.

  3. IUoU battery charging - Wikipedia

    en.wikipedia.org/wiki/IUoU_battery_charging

    As a result of this current, the battery absorbs a charge and its voltage rises. The charger limits the maximum voltage to U max, a constant or temperature-dependent maximum, typically around 2.4 V per cell. Once the U max voltage is reached, typically when the battery is charged to 70–80% of its capacity, [1] the charger enters the Uo-phase ...

  4. USB hardware - Wikipedia

    en.wikipedia.org/wiki/USB_hardware

    Charging docks supply power and do not include a host device or data pins, allowing any capable USB device to charge or operate from a standard USB cable. Charging cables provide power connections, but not data. In a charge-only cable, the data wires are shorted at the device end, otherwise, the device may reject the charger as unsuitable.

  5. 'The charge state tapers off': Elon Musk told Joe Rogan how ...

    www.aol.com/finance/charge-state-tapers-off-elon...

    Musk told Rogan that the last 20% of charging takes as long as the first 80%. ... Here's why you shouldn't charge your EV to 100%. Jing Pan. ... “For a battery, the charge state tapers off as ...

  6. Inductive charging - Wikipedia

    en.wikipedia.org/wiki/Inductive_charging

    In 1977, John E. Trombly was awarded a patent for an "Electromagnetically coupled battery charger." The patent describes an application to charge headlamp batteries for miners (US 4031449). The first application of inductive charging used in the United States was performed by J.G. Bolger, F.A. Kirsten, and S. Ng in 1978.

  7. AC adapter - Wikipedia

    en.wikipedia.org/wiki/AC_adapter

    A battery eliminator is an adapter intended to allow a device intended for battery operation, such as a radio, to be operated from an AC outlet. [10] All radios, except crystal sets, used inconvenient and messy vacuum tube batteries until the mid- to late-1920s. Battery eliminators that plugged into light sockets became very popular. [11]

  8. 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]

  9. Self-discharge - Wikipedia

    en.wikipedia.org/wiki/Self-discharge

    How fast self-discharge in a battery occurs is dependent on the type of battery, state of charge, charging current, ambient temperature and other factors. [2] Primary batteries are not designed for recharging between manufacturing and use, and thus to be practical they must have much lower self-discharge rates than older types of secondary cells.