Quick Charge for Xiaomi Plus 5. Noob Question

Froot Loops on 09/04/2018 - 00:30
Last edited 09/04/2018 - 01:14 by 1 other user

Good evening everybody,

So my Xiaomi Note 3, did an update and the touch has now stopped working. It seems a lot complicated for me to figure out how to fix, so I jumped on the Xiaomi Plus 5.

I am aware that Quick Charge is a feature of the phone QUALCOMM 2.0.

I have decided to embrace this technology and spend my leftover yearly "Mobile Allowance" on a Quick Charger for home use.

My question is, what do I need to buy. Do I just need a new wall plug that is quick charge Certified or do I need a new wall plus and micro USB cable?

Can anyone also recommend a brand that is good value for money / works well.

Thanks in advance for any support regarding this matter. I have done online readings, but am getting more confused.

Also, if anyone has this handset, any recommendations for others things to buy that goes nice with the phone. I have order a shitty case and some tempered glass

• 

  ESEMCE on 09/04/2018 - 07:42

  QC2.0 increases the amperage of the output to 3A (at 5V). You need a special wall adapter with appropriate circuitry to achieve this high current.

  There is nothing special about Quick Charge capable cables apart from the size of the copper conductors. Small conductors can only carry a limited amount of current (amps).

  If you already have high quality cables with bigger conductors, then your existing cables might be fine.
  The only way you can tell is by getting a Quick Charge capable wall plug and seeing what your device is being fed.

  • 

    Clear on 09/04/2018 - 10:04

    QC2.0 increases the amperage of the output to 3A (at 5V).

    QC2.0 almost never goes to 3A as nearly every charger has 20V disabled. Normally it's 5V/2A, 9V/2A, 12V/1.5A.

    • 

      ESEMCE on 09/04/2018 - 11:43

      QC2.0 means 5V/3A or 9V/2A or 12V/1.6A, you need QC3.0 for 20V and a hefty device to pull 3A at 20V!

      Looking further, it looks like the Redmi Note 5 supports 9V charging, as a result just about any cable should be OK, lower quality cable might not allow the full 2A to flow so a higher quality cable is still going to be desirable to maximise charging speed.

      • 

        Clear on 09/04/2018 - 11:50

        +1

        The maximum output of amps is 3A, but not many chargers if any dedicated QC2 chargers support it. QC2 has the capability of 20V which is normally not used and actually disabled in many of the chips normally used for QC2. This has been the case before QC3 even existed.

        Qualcomm themselves list Class A and Class B with the latter supporting 20V. An example of a Class A & B chip is the CHY100. Chargers using this that I've seen in the factories have the 20V disabled.

      • 

        ESEMCE on 09/04/2018 - 12:13

        @Clear:
        Gotcha, I've never looked into Class B, forgot it even existed.

      • 

        Clear on 09/04/2018 - 12:15

        +1

        @scubacoles: Besides a drone I don't think anything else uses it.