$15.5 Wireless Charger, Which is Better for Huawei 15W or Xiaomi 20W? How’s the Difference Between Them?

Huawei and Xiaomi have launched their own wireless chargers that support wireless fast charging: Huawei 15W wireless charger and Xiaomi 20W wireless charger. Both are priced at $15.5, the price is quite close to the people, and the attention is very high.

So, Huawei 15W wireless charger and Xiaomi 20W wireless charger, which one is stronger? Many fans are asking this question. On the surface, Xiaomi’s 20W is more powerful. Is that really the case?

Xiaomi 20W wireless charger

To judge whether a wireless charging performance is good or not, in addition to the wireless charging protocol it supports, it also depends on its hard power, that is, the materials used, including the main control chip, MOS, capacitors, coils, and heat dissipation measures, etc. It is closely related to the daily performance of the product. Below we list these points that everyone is more concerned about, let’s take a look at the specific differences between the two products:

Basic situation comparison

1. Huawei wireless charger

The main features of Huawei wireless charger (15W wireless fast charging version): 15W (Max) wireless charging, Qi compatibility, and multiple security protections. Passed Qi certification (BPP), product compatibility, and safety are guaranteed.


There is a red line around it, which is a refreshing design. There is an LED light on the side to indicate the working status. The opening of the LED light faces downwards, and it will not cause a visual impact to the user even if used at night. The product adopts a USB-C interface.


The conditions for achieving the maximum 15W wireless charging: a charger that supports Huawei’s 40W fast charging protocol and a mobile phone that supports Huawei’s 15W wireless charging are required. With an ordinary QC charger or Huawei charger, it can only achieve a maximum wireless charging power of 10W.


The package version is equipped with a 40W charging head and a 5A data cable. Charger Model: HW-100400C00; input: 100-240V~50/60Hz, 1.2A; Output: 5V/2A, 9V/2A, 10V/4A MAX.

2. Xiaomi wireless charger

The Xiaomi wireless charger (20W fast charging version) is compatible with Qi wireless charging standards and can wirelessly charge Qi-compatible devices on the market. Passed the Qi EPP 10W certification, mobile devices that support the EPP protocol can achieve a maximum power of 10W charging. Wireless charging uses a Type-C interface.


The conditions for realizing the maximum 20W peak wireless fast charging power: Xiaomi 9 mobile phone, and Xiaomi 27W charger. With an ordinary QC charger, it can only achieve a maximum wireless charging power of 10W.


The attached 27W power adapter model: MDY-10-EH, input: 100-240V, 50/60Hz, 0.7A; Output: 5V3A, 9V3A, 12V2.25A, 20V1.35A. Passed 3C, QC3.0, and other certifications.

Wireless charging protocol comparison

1. Huawei wireless charger

Huawei wireless charger (15W wireless fast charging version) supports multiple wireless charging protocols: 5W (BPP), Apple 7.5W, Samsung 10W, Huawei 10W, Huawei 15W.

In terms of product specifications, the input interface is USB Type-C, the input voltage is 5V-12V/2A (Max), the output power is 15W (Max), and the wireless charging protocol: WPC Qi protocol. Model: CP60. It should be noted that to achieve the maximum 15W wireless charging, a charger that supports Huawei’s 40W fast charging protocol and a mobile phone that supports Huawei’s 15W wireless charging are required.

2. Xiaomi wireless charger

Xiaomi wireless charger (20W fast charging version) supports multiple wireless charging protocols: 5W (BPP), Apple 7.5W, Samsung 10W, Huawei 10W, Huawei 15W.

The product is compatible with Qi wireless charging standards and can wirelessly charge Qi-compatible devices on the market. Passed the Qi EPP 10W certification, mobile devices that support the EPP protocol can achieve a maximum power of 10W charging. For mobile phones from Apple, Samsung, and Huawei, they are charged with a charging power of 5W. Support Xiaomi MIX 2S, MIX 3 wireless fast charging. With Mi 9 and the attached 27W power adapter, it can achieve 20W peak wireless charging power.

Wireless charging main control chip comparison

1. Huawei wireless charger

After disassembling the charging head network, it is found that the Huawei wireless charger (15W wireless fast charging version) uses the US IDT P9242 highly integrated 15W wireless charging transmitter chip, supports foreign object detection (FOD) input voltage range 4.25V-21V, in line with WPC1 .2 Standard, built-in over-current and over-temperature protection, support programming LED mode.

2. Xiaomi wireless charger

The Xiaomi wireless charger (20W fast charging version) also uses the IDT chip IDT P9242, and the model is exactly the same.

MOS and capacitance comparison

1. Huawei wireless charger

For Huawei wireless charger (15W wireless fast charging version), the MOS used comes from Nexperia PSMN7R5-30MLD, silkscreen 7D530L. Wireless charging switch tube, withstand voltage 30V, 7.5mΩ, logic level driven NMOS. A total of 4 PSMN7R5 MOS transistors are used to form the H bridge.


Huawei wireless charger uses multiple MLCC capacitors, including 4 NPO capacitors.

2. Xiaomi wireless charger

For the Xiaomi wireless charger (20W fast charging version), the MOS used comes from Ruijun Semiconductor and Wei Zhao.

Ruijun Semiconductor RU30L30M PMOS is used for the step-down feedthrough switch, which is turned on when 5V is input. Four Wei Zhao VS3622AE power tubes are used to drive the coil.


Traditional wireless charging uses 0.4μF capacitors, Xiaomi wireless charging uses 0.25μF here.

Coil comparison

1. Huawei wireless charger

For the Huawei wireless charger (15W wireless fast charging version), the transmitting coil adopts the WPC Qi A11 standard coil, and the solder joints between the coil and the PCB pad are round and full.

2. Xiaomi wireless charger

For Xiaomi wireless charger (20W fast charging version), it also has a built-in single coil.

Comparison of heat dissipation methods

1. Huawei wireless charger

For Huawei wireless charger (15W wireless fast charging version), the upper cover is pasted with aviation-grade heat dissipation material PCM, phase change energy storage, which greatly prolongs the temperature rise time, and cooperates with the large aluminum heat sink under the Coil and the heat sink under the PCBA to make Fast charging takes longer and charging faster.

The aluminum alloy middle frame and the base are filled with thermally conductive silicone grease, which can dissipate the heat in time. The heat-generating components on the PCB have silica gel to conduct heat.

2. Xiaomi wireless charger

For Xiaomi wireless charger (20W fast charging version), in order to avoid overheating, it has a built-in dual cooling system of cooling fan + heat sink, which can quickly dissipate the heat of wireless charging, reduce temperature rise, and improve the experience.

Charging head network summary

In the past two years, wireless charging technology has advanced by leaps and bounds, and its practicability has been greatly improved. The wireless charging speed has a qualitative span, and it has the ability to compete with wired fast charging. Wireless charging has entered the era of fast charging. First-tier manufacturers such as Huawei and Xiaomi have launched 15W or even 20W wireless fast charging. The charging speed is too slow to become a thing of the past.

After disassembly and comparison, the two products have their own advantages and disadvantages in materials, and there is no obvious gap. Even if the Xiaomi 20W wireless charger seems to have higher power than Huawei’s 15W, the realization of peak power needs to be matched with their respective chargers and specific models, so they need to be judged according to different standards.

Shopping suggestions:

In view of the different wireless charging protocols and materials supported by the two wireless chargers, the purchase recommendations are as follows: Huawei users, choose Huawei; Xiaomi users, choose Xiaomi; Apple iPhone users, choose Huawei; Samsung users, choose Huawei; LG users, Choose Xiaomi; SONY users, choose Xiaomi; other users can choose freely according to their preferences because both models only support ordinary 5W wireless charging of other mobile phones.

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