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usb port drawing too much power

  1. Alvin777

    Warning About USB Accessory Drawing Too Much Power (First Time I've Seen That)?

    Hello Mac friends. I was charging two D lithium-ion batteries directly to the Mac's port (USB cable chargers), a warning (I've never seen it before) say the USB Accessory is drawing too much power? Could charging D size batteries draw too much power (but we charge batteries all the time w/ the...
    • Alvin777
    • Thread
    • battery diretly usb usb port drawing too much power
    • Replies: 3
    • Forum: iMac
  2. J

    USB port drawing too much power. The device that is plugged into it will be deactivated

    I'm on a MacBook Pro 13 2017 with no Touch Bar. I use a 30w charger brick and a regular USB-C cable. Would it make any difference if I changed to this cable https://www.apple.com/se/shop/product/MWP32ZM/A/thunderbolt-3-pro%E2%80%91kabel-2-m + a 61W brick? I'm getting the classic "USB port...
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