Xiaomi Qi Wireless Charger Offers 20W to Quickly Charge Your Xiaomi Mi 9 Phone

Xiaomi has bumped up its Qi Wireless Charger to offer one of the fastest wireless charging up to 20 watts. Note the Xiaomi Qi charger only enables 20W wireless charging for certain Xiaomi phones like the Xiaomi Mi 9. Other non Xiaomi Qi-enabled phones can only get 5 watts of Qi Low Power charging using the Xiaomi Qi Wireless Charger. 

The Xiaomi Qi Wireless Charger sports the Qi logo on the back of its box claiming to be Qi certified with 20W wireless charging support. The Qualcomm Quick Charge logo on the box also indicates the Xiaomi charger supporting Qualcomm Quick Charge based input charging meaning the charger can negotiate with a Qualcomm Quick Charge based charger for own power supply. Note that it does not seem to display the proper Quick Charge logo.

The Xiaomi Qi Wireless Charger comes with its own AC power adapter accessory with a separate USB Type-A to Type-C charging cable and documentation. 

The Xiaomi Qi Wireless Charger uses a USB Type-A based Qualcomm Quick Charge 3.0 enabled charger for up to 20 volts charging in, supporting power profiles of 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), 27 watts (12 volts @ 2.25 amps) and 27 watts (20 volts @ 1.35 amps).

Note if you happen to look for a AC charger to quickly charge your Xiaomi phones, you can opt for the 27W QC3 Charger by Xiaomi to get up to 27W power supply through Qualcomm Quick Charge 3.0 standard. 

Using the USB Power Delivery Compliance C2 Tester from Granite River Labs to run just a subset of the full USB Power Delivery compliance test suite, we can see that the Xiaomi Qi Wireless Charger supports 10 watts (5 volts @ 2 amps) power profile for charging in. Some compliance failures were also observed for this Qi charger.

Sink Capabilities

Parameter	GetCapabilities
Snk_PDO_Supply_Type #1	Fixed
Snk_PDO_Voltage #1	5V
Snk_PDO_Op_Current #1	2A

Power Delivery 3.0 Tests- Result Summary

Sl No	Test ID	Test Name	Test Result
1	TD.PD.LL3.E1	TD.PD.LL3.E1 GoodCRC Specification Revision compatibility	PASS
2	TD.PD.LL3.E2	TD.PD.LL3.E2 Retransmission	PASS
3	TD.PD.LL3.E3	TD.PD.LL3.E3 GoodCRC Compatibility with PD2	PASS
4	TD.PD.SNK3.E1	TD.PD.SNK3.E1 Request Fields Checks	PASS
5	TD.PD.SNK3.E2	TD.PD.SNK3.E2 Unrecognized Message Received in Ready State	PASS
6	TD.PD.SNK3.E3	TD.PD.SNK3.E3 Get Source Cap Extended Fields Checks	PASS
7	TD.PD.SNK3.E4	TD.PD.SNK3.E4 SenderResponseTimer Deadline Source Capabilities Extended	PASS
8	TD.PD.SNK3.E5	TD.PD.SNK3.E5 SenderResponseTimer Timeout Source Capabilities Extended	PASS
9	TD.PD.SNK3.E6	TD.PD.SNK3.E6 Get Status Fields Checks	PASS
10	TD.PD.SNK3.E7	TD.PD.SNK3.E7 Get Battery Status Fields Checks	PASS
11	TD.PD.SNK3.E8	TD.PD.SNK3.E8 Status sent timely	PASS
12	TD.PD.SNK3.E9	TD.PD.SNK3.E9 Manufacturer Info Sent Timely	PASS
13	TD.PD.SNK3.E10	TD.PD.SNK3.E10 Source Capabilities Extended sent timely	PASS
14	TD.PD.SNK3.E11	TD.PD.SNK3.E11 Receiving chunked extended message	PASS
15	TD.PD.SNK3.E12	TD.PD.SNK3.E12 Soft Reset sent regardless of Rp value	PASS
16	TD.PD.SNK3.E13	TD.PD.SNK3.E13 SinkPPSPeriodicTimer Timeout	PASS
17	TD.PD.SNK3.E14	TD.PD.SNK3.E14 Request Fields Checks PPS	FAIL
18	TD.PD.SNK3.E15	TD.PD.SNK3.E15 Status Fields Checks	FAIL
19	TD.PD.SNK3.E16	TD.PD.SNK3.E16 Manufacturer Info Fields Checks	PASS
20	TD.PD.SNK3.E17	TD.PD.SNK3.E17 Manufacturer Info Fields Checks Invalid Manufacturer Info Target	FAIL
21	TD.PD.SNK3.E18	TD.PD.SNK3.E18 Manufacturer Info Fields Checks Invalid Manufacturer Info Ref	FAIL
22	TD.PD.SNK3.E19	TD.PD.SNK3.E19 ChunkSenderResponseTimer Timeout	PASS
23	TD.PD.VDM3.E1	TD.PD.VDM3.E1 Fields Checks Discover Identity	PASS
24	TD.PD.VDM3.E2	TD.PD.VDM3.E2 Unrecognized VID in Unstructured VDM	PASS
30	TD.PD.VNDI3.E7	TD.PD.VNDI3.E7 Security Msgs Supported	FAIL

PD2 Deterministic Tests- Result Summary

Sl No	Test ID	Test Name	Test Result
1	TD.PD.LL.E1	TD.PD.LL.E1 GoodCrc Timing	PASS
2	TD.PD.LL.E2	TD.PD.LL.E2 Retransmission	PASS
3	TD.PD.LL.E3	TD.PD.LL.E3 Soft Reset Usage	PASS
4	TD.PD.LL.E4	TD.PD.LL.E4 Hard Reset Usage	PASS
5	TD.PD.LL.E5	TD.PD.LL.E5 Soft Reset	PASS
6	TD.PD.LL.E6	TD.PD.LL.E6 Ping	PASS
7	TD.PD.SNK.E1	TD.PD.SNK.E1 SinkWaitCapTimer Deadline	PASS
8	TD.PD.SNK.E2	TD.PD.SNK.E2 SinkWaitCapTimer Timeout	PASS
9	TD.PD.SNK.E3	TD.PD.SNK.E3 Request Sent Timely	PASS
10	TD.PD.SNK.E4	TD.PD.SNK.E4 Request Fields Checks	PASS
11	TD.PD.SNK.E5	TD.PD.SNK.E5 SenderResponseTimer Deadline Accept	PASS
12	TD.PD.SNK.E6	TD.PD.SNK.E6 SenderResponseTimer Timeout Accept	PASS
13	TD.PD.SNK.E7	TD.PD.SNK.E7 PSTransitionTimer Deadline	PASS
14	TD.PD.SNK.E8	TD.PD.SNK.E8 PSTransitionTimer Timeout	PASS
15	TD.PD.SNK.E9	TD.PD.SNK.E9 GetSinkCap in Place of Accept	PASS
16	TD.PD.SNK.E10	TD.PD.SNK.E10 GetSinkCap in Place of PS RDY	PASS
18	TD.PD.VDMU.E1	TD.PD.VDMU.E1 Fields Checks Discover Identity	PASS
19	TD.PD.VDMU.E2	TD.PD.VDMU.E2 Fields Checks Discover SVIDs	PASS
20	TD.PD.VDMU.E3	TD.PD.VDMU.E3 Fields Checks Discover Modes	PASS
21	TD.PD.VDMU.E4	TD.PD.VDMU.E4 Fields Checks Enter Mode	PASS
22	TD.PD.VDMU.E5	TD.PD.VDMU.E5 Fields Checks Exit Mode	PASS
23	TD.PD.VDMU.E6	TD.PD.VDMU.E6 tVDMReceiverResponse Discover Identity	PASS
24	TD.PD.VDMU.E7	TD.PD.VDMU.E7 tVDMReceiverResponse Discover SVIDs	PASS
25	TD.PD.VDMU.E8	TD.PD.VDMU.E8 tVDMReceiverResponse Discover Modes	PASS
26	TD.PD.VDMU.E9	TD.PD.VDMU.E9 tVDMReceiverResponse Enter and Exit Mode	PASS
27	TD.PD.VDMU.E10	TD.PD.VDMU.E10 Incorrect SVID_Discover Identity	PASS
28	TD.PD.VDMU.E11	TD.PD.VDMU.E11 Incorrect SVID Discover SVIDs	PASS
29	TD.PD.VDMU.E12	TD.PD.VDMU.E12 Incorrect SVID Discover Modes	PASS
30	TD.PD.VDMU.E13	TD.PD.VDMU.E13 Incorrect SVID Enter Mode	PASS
31	TD.PD.VDMU.E14	TD.PD.VDMU.E14 Incorrect SVID Exit Mode	PASS
32	TD.PD.VDMU.E15	TD.PD.VDMU.E15 Applicability	PASS
33	TD.PD.VDMU.E16	TD.PD.VDMU.E16 Interruption by PD Command	PASS
34	TD.PD.VDMU.E17	TD.PD.VDMU.E17 Interruption by VDM Command	PASS
35	TD.PD.VDMU.E18	TD.PD.VDMU.E18 tDRSwapHardReset	PASS
42	TD.PD.PHY.E1	TD.PD.PHY.E1 BIST Test Data	PASS
45	TD.PD.PHY.E4	TD.PD.PHY.E4 Transmitter Bit Rate and Bit Rate Drift	FAIL
46	TD.PD.PHY.E5	TD.PD.PHY.E5 Transmitter Collision Avoidance	PASS
47	TD.PD.PHY.E6	TD.PD.PHY.E6 Receiver Swing Tolerance	PASS
48	TD.PD.PHY.E7	TD.PD.PHY.E7 Receiver Bit Rate Tolerance	PASS
49	TD.PD.PHY.E8	TD.PD.PHY.E8 Receiver Bit Rate Deviation Tolerance	PASS
50	TD.PD.PHY.E9	TD.PD.PHY.E9 Valid SOP Framing	PASS
51	TD.PD.PHY.E10	TD.PD.PHY.E10 Invalid SOP Framing	PASS
52	TD.PD.PHY.E11	TD.PD.PHY.E11 Valid SOP P Framing	PASS
53	TD.PD.PHY.E12	TD.PD.PHY.E12 Invalid SOP P Framing	PASS
54	TD.PD.PHY.E13	TD.PD.PHY.E13 Valid SOP PP Framing	PASS
55	TD.PD.PHY.E14	TD.PD.PHY.E14 Invalid SOP PP Framing	PASS
56	TD.PD.PHY.E15	TD.PD.PHY.E15 SOP P_Debug SOP PP Debug Framing	PASS
57	TD.PD.PHY.E16	TD.PD.PHY.E16 Valid Hard Reset Framing	PASS
58	TD.PD.PHY.E17	TD.PD.PHY.E17 Invalid Hard Reset Framing	PASS
59	TD.PD.PHY.E18	TD.PD.PHY.E18 Valid Cable Reset Framing	PASS
60	TD.PD.PHY.E19	TD.PD.PHY.E19 Invalid Cable Reset Framing	PASS
61	TD.PD.PHY.E20	TD.PD.PHY.E20 EOP Framing	PASS
62	TD.PD.PHY.E21	TD.PD.PHY.E21 Preamble	PASS

PD2 Communication Engine Tests- Result Summary

Sl No	Test ID	Test Name	Test Result
2	TDA.2.1.1.2	TDA.2.1.1.2 BMC PHY TX BIT	FAIL
3	TDA.2.1.2.2	TDA.2.1.2.2 BMC PHY RX INT REJ	PASS
4	TDA.2.1.2.1	TDA.2.1.2.1 BMC PHY RX BUSIDL	PASS
5	TDA.2.1.3.1	TDA.2.1.3.1 BMC PHY TERM	PASS
6	TDA.2.1.3.2	TDA.2.1.3.2 BMC PHY MSG	PASS
7	TDA.2.2.1	TDA.2.2.1 BMC PROT SEQ GETCAPS	PASS
14	TDA.2.3.3.1	TDA.2.3.3.1 POW SNK TRANS C CP	FAIL