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Quick Charge is a proprietary technology that can charge battery-powered devices, primarily mobile phones, at power levels exceeding the 7.5 watts (5 volts at 1.5 amps) supported by the USB BC 1.2 standard, using existing USB cables. The higher voltage available allows more power (watts) to be supplied through wires without excessive heating.
2 MP (depth) 18 W HUAWEI Quick Charge 3340 mAh Nova 2 lite (also known as Y7 Prime 2018) March 2018 Snapdragon 430 32/64 GB 3/4 GB 13 MP 2 MP (depth) 8 MP 3000 mAh Nova 3i (also known as P Smart+) July 2018 Kirin 710 64/128 GB 4/6 GB 16 MP 2 MP (depth) 24 MP (wide) 2 MP (depth) 10 W 3340 mAh No Nova 3 August 2018 Kirin 970
Huawei Nova; Manufacturer: Huawei: Type: Smartphone: Slogan "Defy Expectations" First released: 1 September 2016; 8 years ago () Successor: Huawei Nova 2: Compatible networks: 2G GSM/GPRS/EDGE – 850, 900, 1800, 1900 MHz. 2G CDMA 1xRTT – 800, 850, 1900 MHz 3G TD-SCDMA – 1900, 2000 MHz 3G UMTS – 800, 850, 900, 1700, 1900, 2100 MHz 3G ...
An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.
Qi (/ tʃ iː / CHEE) is an open standard for inductive charging developed by the Wireless Power Consortium.It allows compatible devices, such as smartphones, to receive power when placed on a Qi charger, which can be effective over distances up to 4 cm (1.6 in). [1]
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 .
In the case of devices that output a different voltage than the battery, it is the battery voltage (typically 3.7 V for Li-ion) that must be used to calculate rather than the device output (for example, usually 5.0 V for USB portable chargers). This results in a 500 mA USB device running for about 3.7 hours on a 2,500 mAh battery, not five hours.
Float voltage is the voltage at which a battery is maintained after being fully charged to maintain that capacity by compensating for self-discharge of the battery. [1] The voltage could be held constant for the entire duration of the cell's operation (such as in an automotive battery) or could be held for a particular phase of charging by the charger. [2]