What determines the speed of the charging of the cell phone?

- Jan 02, 2018 -

What determines the speed of the charging of the cell phone?


For the same cell phone, the efficiency is determined by data line internal resistance (including USB contact resistance at both ends), the output voltage of the charging head and the maximum output power of the three.


The output of the charging head passes through the charging line. Due to the internal resistance of the charging line, the voltage of the power management component at the end of the mobile phone will be reduced. In general, the internal resistance of the charging current multiplied by the data line is the pressure drop of the data line. At the same time, the power management chip will set a minimum acceptance voltage, such as 4.7V, which will not be charged under this value.


The same charging head with different charging line on the same mobile phone charging, the charging head will dynamically adjust the output current (correction: mobile phone power management chip should take the initiative to reduce the input current, the charging end will change, in order to ensure the voltage reaches) mobile phone terminal can meet the requirements.


Related Industry Knowledge

Related Products

  • TPE 2.4A Mobile Phone USB Charging Cable For Iphone5/6/7/8/X
  • Colorful Braided Type C USB2.0 Phone Charge Cable
  • New Arrives Product Mini USB to Micro USB Cable with 120 Pure Copper Wire
  • Best Selling Nylon Braided Wire 2 in 1 USB Data Charging Cable of Micro and Type-C Connectors
  • High Quality Zinc Alloy TPE USB Data Charging Cable 2 in 1 with Android and Phone 5/5S/6S/7/8 Conenctors
  • OEM/ODM Factory Sale Three-in-one 3 Mult USB Data Charging Cable with Micro/iPhone7/Type-C to Switch