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  2. Charge controller - Wikipedia

    en.wikipedia.org/wiki/Charge_controller

    It may also prevent completely draining ("deep discharging") a battery, or perform controlled discharges, depending on the battery technology, to protect battery life. [ 3 ] [ 4 ] The terms "charge controller" or "charge regulator" may refer to either a stand-alone device, or to control circuitry integrated within a battery pack, battery ...

  3. Standby power - Wikipedia

    en.wikipedia.org/wiki/Standby_power

    Standby power is electrical power used by appliances and equipment while switched off or not performing their primary function, often waiting to be activated by a remote controller. That power is consumed by internal or external power supplies, remote control receivers, text or light displays, and circuits energized when the device is plugged ...

  4. List of commercial failures in computing - Wikipedia

    en.wikipedia.org/wiki/List_of_commercial...

    While the Cube received positive reviews and awards for its design, reviewers noted that it was expensive compared to its power and lacked expandability. It was further criticized for its tendency to develop cracks in its case, significantly impacting sales of a computer favored by potential buyers for its aesthetics. [ 19 ]

  5. Charge cycle - Wikipedia

    en.wikipedia.org/wiki/Charge_cycle

    Discharging the battery fully before recharging may be called "deep discharge"; partially discharging then recharging may be called "shallow discharge". A "charge cycle" is not a unit of time; the length of time spent charging or discharging does not affect the number of charge cycles. [1] Each battery is affected differently by charge cycles ...

  6. Battery charger - Wikipedia

    en.wikipedia.org/wiki/Battery_charger

    The C-rate is defined as the charge or discharge current divided by the battery's capacity to store an electrical charge. While rarely stated explicitly, the unit of the C-rate is h −1, equivalent to stating the battery's capacity to store an electrical charge in unit hour times current in the same unit as the charge or discharge current. The ...

  7. Cutoff voltage - Wikipedia

    en.wikipedia.org/wiki/Cutoff_voltage

    The power to the equipment cuts off before a relatively large portion of the battery life has been used. [citation needed] A high cut-off voltage is more widespread than perhaps assumed. For example, a certain brand of mobile phone that is powered with a single-cell Lithium-ion battery cuts off at 3.3 V.

  8. Bleeder resistor - Wikipedia

    en.wikipedia.org/wiki/Bleeder_resistor

    In electronics, a bleeder resistor, bleeder load, leakage resistor, capacitor discharge resistor or safety discharge resistor is a resistor connected in parallel with the output of a high-voltage power supply circuit for the purpose of discharging the electric charge stored in the power supply's filter capacitors when the equipment is turned off, for safety reasons.

  9. Lightning (connector) - Wikipedia

    en.wikipedia.org/wiki/Lightning_(connector)

    A known failure mode of Lightning plugs is power contacts turning black over time, sometimes causing the affected side of the connector to cease functioning. When the plug is inserted or unplugged while powered, a brief spark may occur between the mating power contacts in the plug and socket, eroding their gold plating. Because the Lightning ...