1. HumanJHawkins's Avatar
    I use a Samsung Galaxy S5 in a robot. Keeping robot and phone batteries charged is a constant issue. So I've acquired a bunch of different Micro USB3 to USB A Y-Cables in hopes of charging the phone from an on-board power bank while running the robot.

    Multiple charging sources all work fine with normal (non Y) charging cables. Yet none of several Y-Cables work to charge the phone... It doesn't even matter if the data cable is plugged in. With the phone off, I can go straight from a reliable charging station to the phone using the charging part of a Y-cable and it fails. All I get it the periodic empty battery image on the screen as it starts to attempt to charge. Then it shuts off charging as though it detected something wrong.

    Some of the cables I've tried are:
    https://www.amazon.com/gp/product/B0...cUvbUpU6560622
    https://www.amazon.com/gp/product/B0...cUvbUpU6560622
    https://www.amazon.com/gp/product/B0...cUvbUpU6560622
    https://forums.androidcentral.com/e?...token=pmYfiGqK

    Can anyone explain why this doesn't work? And more importantly, is there a solution?

    Thanks in advance.
    06-08-2019 11:14 PM
  2. methodman89's Avatar
    What is your setting for the USB when plugged in?
    06-09-2019 05:34 AM
  3. HumanJHawkins's Avatar
    If you mean what setting for data transfer, none... I can't even get it to charge plugged straight into a reliable OEM or Anker charger while using the charging side of the y-cable. Incidentally, it also fails in the same way attempting to charge from the other (data) side of the y-cables.
    06-09-2019 05:54 AM
  4. methodman89's Avatar
    Are you plugging the USB side to a USB port or a power brick with a USB output? Do you have a voltmeter?
    06-09-2019 07:26 AM

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