[Xiaomi Poco F2 Pro (Redmi K30 Pro) Questions & Ans] Batosss:
Hello

So a couple of weeks back I upgraded to the Poco F2 Pro 6/128GB from my Mi 9T.

I have been using a magnetic charging cable with my Mi 9T, with a little magnetic part permanently in the usb port for convenience with a standard QC3.0 charger. Worked great and charged fast at 18W.

I wanted a similar solution for my Poco F2 Pro.

So I have done some testing and the results might surprise you.

Poco supports 30W Mi Turbo Charge which seems to be a custom Xiaomi charging protocol and does not seem to play nice with standard USB PD3.0 Protocol.

I have done charging tests from ~5-20% battery for maximum charging speeds and tested the actual charge rates with a USB Voltmeter

Voltmeter:

https://www.ebay.co.uk/itm/USB-Mete...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2648

Test 1: Original Charger and Cable

Result: 30W Mi Rapid Charging (~9.6V, 3.1A) As Expected

Even tho the original charger is rated at Max 33W, Poco only charges at 30W Max.

Test 2: 60W USB PD3.0 Charger + 5A Type C to Type C Cable

Charger: https://www.amazon.co.uk/gp/product/B0824S38VC/ref=ppx_yo_dt_b_asin_image_o07_s00?ie=UTF8&psc=1

Cable: https://www.amazon.co.uk/gp/product/B07QPNRGYH/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

Result: 18W Standard Fast Charging (~9.2V, 1.9A)

I did multiple tests to check if the charger is legit (which it is, many of my friends use it with different devices and it works great) with my brothers Pixel 4XL, and my friend Xiaomi Mi 9.

Pixel Charged at 18W, Mi 9 at 27W.

The phone did not charge at 27W (~9V 3A), even to it does support PD 3.0 charging.

Test 3: Original Charger with a 3A Ugreen Magnetic Cable

Cable: https://www.ebay.co.uk/itm/Ugreen-M...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2648

Result: ~25W Mi Turbo Charging (~9.6V, 2.6A)

This is very interesting since it does trigger the Mi Turbo Charge, it is not the full speed charge like with the original setup.

Original setup also has a charging animation, with the % increasing at a steady speed.

With the Ugreen Cable, there was no animation.

Test 4: Original Charger + 40W Huawei Supercharge Cable

Cable: https://www.amazon.co.uk/gp/product/B08CR7W2T1/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

Result: ~25W Mi Turbo Charging (~9.6V, 2.6A)

The original Xiaomi Cable is a 5A Cable, so I thought id try a Huawei Supercharge Cable, but it ended up charging the same as a 3A Ugreen Cable

Test 5: 60W USB PD3.0 Charger + 5A Magnetic Type C to Type C Cable

Charger: https://www.amazon.co.uk/gp/product/B0824S38VC/ref=ppx_yo_dt_b_asin_image_o07_s00?ie=UTF8&psc=1

Cable: https://www.amazon.co.uk/gp/product/B08HLN27DP/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1

Result: 18W Standard Fast Charging (~9.2V, 1.9A)

Again, standard 18W fast charging, not 27W as you would expect.

Conclusion:

From my testing, the only way to charge the Poco at Maximum speed of 30W is with the charger and cable which I find very strange. Does the original Xiaomi cable have a custom Xiaomi chip which handshakes with the charger to get the full 30W Mi Turbo charge?

With a PD3.0 Charger, I was only able to achieve 18W of fast charging, again very strange, since Poco should support 27W (~9V 3A) charging with any PD3.0 Charger.

I have settled for a setup with the Ugreen Magnetic Cable and the Original Charger for convenience, ease of use and preventing the USB port from being worn out. I am loosing about 5W of speed, which does slightly increase the charging time. (I charge my phone to ~85% max)

(If there is something wrong with my methodology let me know and I will re-test if needed)