Comment on i have a problem with USB c charging 😅

• jeinzi@discuss.tchncs.de ⁨5⁩ ⁨months⁩ ago

  For Power Delivery, higher voltages are negotiated using the CC (configuration channel) pins. If you use an A-to-C cable, the A side does not have the CC pins and therefore you can’t get more than 5V.

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  • DNOS@lemmy.ml ⁨5⁩ ⁨months⁩ ago

    Are you sure ? How does a standard phone fast charge then , its not the case anyway cause the headphones regularly charge at 5v so it’s enough… Thanks anyway for your comment 👍🏻

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    • jeinzi@discuss.tchncs.de ⁨5⁩ ⁨months⁩ ago

      There are other fast charging standards than Power Delivery. USB Battery Charging defines that when the data lines are shorted, a device can draw more current (up to 1.5A), but still at 5V. QuickCharge on the other hand uses the data lines to negotiate higher voltages, so an A-to-C cable can’t protect you from that.

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      • DNOS@lemmy.ml ⁨5⁩ ⁨months⁩ ago

        Thanks so assuming the headphones use the USB battery charging standard ( just because I have measured only 5v output and it seems logical) how should I comnect up the second charger ? Do I still need to find the cc line (guessing a 5 v pin the closest to the USB port itself) and add a resistor ? The diode must be there in each case right ?

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