It’s no surprise that Xiaomi and Zimi have competing products. Both brands recently joined the Wireless Power Consortium and soon after released wireless chargers. We at ChargerLab today will tear down both chargers and compare the two.
Xiaomi’s wireless charger was announced on March 27 alongside the bezel-less Mi Mix 2S. It supports 5W standard and 7.5W Xiaomi Quick Charge formats. It’s white with a rubber, foamy top.
Zimi’s charger, meanwhile, was released in February and supports standard 5W charging and Apple’s 7.5W plus Samsung’s 10W fast charging speeds. It’s black and made of metal.
1: Xiaomi wireless charger unboxing
In the above photo you can see just how thin and minimalistic the charger is. There’s no logo at all. It’s a very clean design. The top of the pad is made of silicon, which has a grippy texture to prevent the phone from sliding off.
The pad has a 47mm circumference, and is around 12.44mm thick. It uses USB-C input, supports 5V2A/9V2A imput.
Flipping the charger under you’ll see a raised base and finally, a logo.
The base can be taken off by unscrewing the screws.
You can see the bottom board has been designed to stay in place.
All the parts are mounted on the bottom of the device. There’s a black piece of metal that separates the PCB
PCB screws are filled with adhesive.
The transparent light guide has a black covering to prevent light leakage.
The metal heat sink is fixed by clamps and PCB screws and picks up the clips for further removal
A knife was used to scrape the metal block, revealing that it is made of anodized aluminum material.
Not one but four NPO capacitors, guaranteeing great power.
The whole set.
2: Zimi Unboxing
Zimi’s wireless charger package has a simple and clean style too.
The back has the usual specs. You can see that it uses USB-C and supports 5V2A/9V1.6A power.
The charging pad’s diameter measures 89mm, with a thickness of 7.1mm. It also uses USB-C for faster charging.
Unlike Xiaomi’s charger there is no anti-slip raised lip, but the base is still not that slippery fortunately.
What you expecting man? It is what it is — a standard plug that supports 100-240VAC 50/60Hz 0.5A and outputs at 5V2.5A/9V2A/12V1.5A.
The main parts with integrated aluminum CNC are all enclosed in rubber which must be broken off.
There is also a protective cover behind the USB-C plug which is rare.
Four X7R battery cells.
You can see the model numbers on the back of the PCB.
Both chargers are high performers, but Xiaomi’s is a better value at 99 yuan compared to the Zimi’s 129 yuan.