Introduction
Huawei has launched the second-generation Wireless SuperCharger for WATCH, featuring a compact and sleek round design that's space-saving and easy to carry. It features an aluminum alloy body with a fine sandblasted finish, which enhances both texture and durability. The charger uses a seamless contactless design and houses a strong built-in magnet, allowing it to automatically snap into alignment with the HUAWEI WATCH when brought close. Next, let’s take it apart to examine its internal components and structure.
Product Appearance
The front of the packaging features the Huawei logo, the product name, and an image of the charger.
The back of the packaging displays the product name, specifications, usage recommendations, and other related information.
The packaging contains the charger and some documents.
The integrated cable uses a USB-A connector. The sides and bottom are crafted from a unibody aluminum alloy casing, while the top is made of a glossy white plastic panel.
Close-up of the USB-A connector.
The plastic sheet is purple.
The connection between the cable and the charging pad is reinforced with strain relief to prevent bending and wear.
The top plastic cover features a recessed design to fit the watch, with a high-gloss finish for a sleek appearance.
Laser-engraved product parameters on the bottom:
Model: CW05
Input: 5-10V 2A MAX
The length of the cable is about 80 cm (31.5 inches).
The diameter of the charger is 38.43 mm (1.51 inches).
The thickness is about 10.22 mm (0.4 inches).
The weight is about 53 g (1.87 oz).
Using it with a 100W charger to charge the Huawei WATCH GT 5, the measured output power of the charger is about 4.28W.
Teardown
Next, let's take it apart to see its internal components and structure.
After removing the plastic casing of the USB-A connector, the internal metal sleeve and the male metal shell are integrated as a single unit.
View of the other side shows three raised ridges on the metal sleeve.
After removing the metal sleeve, the interior is filled with a hard potting compound.
After removing the potting compound, the internal PCB is sealed and protected with adhesive.
The other side of the PCB is also sealed with adhesive for protection.
After removing the adhesive, the front side of the PCB reveals the wireless charging master control chip along with two coil-switching MOSFETs.
The other side has another set of coil-switching MOSFETs.
Close-up of the solder joints on the internal wire cores of the USB-A cable.
Close-up of a component marked with 6N.
The wireless charging master control chip, marked with HW0539, is a custom model.
The MOSFET is from JSCJ, model CJMN3010L. It’s an NMOS transistor with a voltage rating of 30V and an on-resistance of 8.3mΩ, packaged in a DFNWB2x2-6L package.
The other set of MOSFETs also uses the JSCJ CJMN3010L model.
After removing the plastic cover, the interior is filled with white adhesive.
The wireless charging coil is removed. At the bottom, there is a PCB with a small magnet at its center, and the bottom is also heavily filled with white adhesive.
Clean off the white adhesive and remove the PCB.
There are no components on the front side; the right side features exposed copper with solder coating.
The other side of the PCB is soldered with five wire cores and the wireless charging coil. It’s evident that the entire wireless charging circuit is integrated within the PCB inside the USB-A connector, effectively addressing heat buildup during the charging process.
The charging coil uses a dual-coil design and is embedded within the grooves of the magnetic isolation sheet.
Well, those are all components of the Huawei WATCH 2nd-Gen Wireless SuperCharger.
Summary of ChargerLAB
Here is the component list of the Huawei WATCH 2nd-Gen Wireless SuperCharger for your convenience.
It features a contactless design, combined with an aluminum alloy casing and compact body, offering excellent portability and user experience. It supports Huawei’s wireless fast charging protocol and is compatible with various watch models—fully charging the HUAWEI WATCH 4 and its Pro version takes just 60 minutes and 90 minutes, respectively.
After taking it apart, we found that the wireless charging circuit and the charging coil are separately designed—housed within the USB-A connector and the charging panel, respectively—to effectively address heat buildup during charging. It features a dual-coil design and uses a custom master controller chip (HW0539) paired with two sets of coil-switching MOSFETs from JSCJ to enable wireless charging. Both the connector and the panel are sealed with adhesive, reflecting solid and reliable craftsmanship.
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