1. Android Central Question's Avatar
    As known, Android will limit the charging current as 500mA while a data transfer detected. Is there anyone know how to get rid of this limitation, so the charging speed could be boost even while the data transfer is active?

    So, I'm starting an automation work, which need the Phone to be connected to the PC all the time. The problem faced here is that the phone will always out of juice after ~12hours operation.
    I don't mind about the phone get too hot or the battery will have it's life shorten, I will think about that problem later.
    I've tried to double the cable input like the one applied on External HDD Storage, with no positive result. Also, have tried to use USB2.0 and also USB3.0 port with the same result.

    Afaik, the limitation come from device itself, NOT from this OS or the PC's hardware itself. Since I've tried to plug the VGA Monitor with USB powered input to the PC, and it could draw current for more than 1A. So, actually, there's a possibility to draw more than 500mA from PC's USB port (even a laptop can power it on). Back to the main question, could we break the 500mA limit in Smartphone (Android) even the data transfer is active at that time?

    Looking forward the feedback from you guys. And thanks for your attention.
    03-19-2019 11:53 PM
  2. hallux's Avatar
    Since I've tried to plug the VGA Monitor with USB powered input to the PC, and it could draw current for more than 1A.
    How did you measure this? If you measured the output from the monitor's USB port, keep in mind that the monitor can boost that port's power as it has its own power supply.

    Here's an explanation of USB ports used for charging - https://www.extremetech.com/computin...our-smartphone

    I draw your attention to this:
    In the USB 1.0 and 2.0 specs, a standard downstream port is capable of delivering up to 500mA (0.5A); with USB 3.0, it moves up to 900mA (0.9A). The charging downstream and dedicated charging ports provide up to 1,500mA (1.5A).
    So, if you don't have one of those "charging downstream" ports, you'll get the 500 mA. Some laptops have a lightning bolt designating those, not sure if desktops have them.

    If you need additional help or have more questions or details to share, please join the site so you can reply in this thread. See this link for instructions on how to join Android Central.
    03-20-2019 04:58 AM

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