For in-car wireless charging products, cables winding around the center console have always been a hassle to organize. Charging Head Network learned that CUKTECH has integrated a retractable Type-C cable into the body of its No.10 car magnetic wireless charger; pulling it out enables wired fast charging for smartphones, and releasing it automatically retracts the cable. The main unit itself is also a magnetic wireless charger, allowing phones to charge instantly upon attachment, directly fulfilling the roles of stand, power source, and charger.
This product set consists of a magnetic wireless charging main unit, a car charger, a duckbill clip, and a magnetic patch, with the set model number WC1055. The manufacturer is Nanjing Cuktech Electronic Technology Co., Ltd. The wireless charging main unit features an internal retractable Type-C cable with a maximum output power of 90W, while the wireless charging output reaches up to 15W. The car charger model WCJ153CC draws power from the cigarette lighter socket and includes a 5V/2A USB-A port on its body.
Prior to this, Charging Head Network had already conducted teardowns of over 300 wireless charger reports.
Below, Charging Head Network provides a detailed teardown of this car magnetic wireless charger to examine its internal construction and component quality.
Product Appearance
The front of the packaging box displays the CUKTECH brand logo and the full product name, highlighting three key selling points: retractable cable & wireless charging 2-in-1, triple-port output up to 100W Max, and included car charger.
The back of the packaging box lists the product name, English name, and model number.
The bottom of the packaging box prints detailed product specifications; these parameters will be introduced later when discussing the actual product.
Upon opening the package, the car charger body is revealed, featuring an overall black color scheme.
The front contacts are made of silver metal material, and the body bears the CUKTECH brand logo.
The reverse side features silk-screened specifications for the car charger:
Product Name: Car Charger
Model: WCJ153CC
Single Port Output: USB-A 5V/2A, DC 12-24V/9.5A
Input: 12-24V⎓10A
Manufacturer: Nanjing Cuktech Electronic Technology Co., Ltd.
The rear of the car charger features a USB-A interface surrounded by a blue decorative ring, with the DC cable emerging from the center of the tail.
The end of the connecting cable is a DC round plug, fitted with a blue identification ring and embossed with the CUKTECH brand.
Turning to the wireless charging main unit, the front features a glossy cover panel with the "CUKTECH 10" branding printed in the center.
A slot for storing the retractable cable is located on the side of the main unit, where the Type-C connector resides when not in use.
The other side of the main unit's body houses the DC input interface.
The top curved surface of the main unit shows a seamless transition between the metal middle frame and the glossy cover panel.
The back of the main unit displays a switch, a universal ball joint base, and detailed product specifications.
Close-up of detailed specifications on the back of the main unit:
Product Name: CUKTECH No.10 Car Magnetic Wireless Charger (Retractable Cable)
Model: WCJ53, Input 12V-24V/9.5A
Single Port Output: Type-C Retractable Cable: 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/3.25A, 5-11V/5A, 5-20V/4.5A (90W MAX)
Wireless Charging: 15W MAX
Dual Port Simultaneous Output: 90W MAX
Manufacturer: Nanjing Cuktech Electronic Technology Co., Ltd.
A close-up of the main unit lying on its side reveals an oval pebble-like shape.
Close-up of the terminal area for the built-in retractable cable.
All items inside the package have been unpacked, including the magnetic wireless charging main unit, car charger, duckbill clip, magnetic patch, and user manual.
Dimensions and Weight
Using vernier calipers, the length of the main unit was measured at approximately 79.96mm.
The width of the main unit was measured at approximately 59.05mm.
The thickness of the body, including the base, is approximately 37.76mm.
The total weight of the device is approximately 120.8g.
The actual measured length of the car charger's DC cable is approximately 123cm.
The actual measured extended length of the retractable cable is approximately 70cm.
Fast Charging Protocol Testing
First, simulate the 14V battery voltage of a passenger vehicle when the engine is off.
With a 14V input, testing showed that the retractable cable supports QC3.0, PD3.0 65W, PPS, QC5, DCP, Apple 2.4A, and other fast charging protocols.
PDO message data indicates that the retractable cable offers five fixed voltage tiers: 5V3A, 9V3A, 12V3A, 15V3A, and 20V3.25A, along with two PPS voltage ranges: 5-11V5A and 5-20V4.5A. It also supports Xiaomi's 90W proprietary fast charging.
Next, apply a 24V input voltage to simulate the cigarette lighter input of a diesel vehicle.
Under 24V input voltage, the protocols supported by the retractable cable were found to be consistent with those under 14V input.
The PDO messages were also identical to those observed under 14V input voltage.
Product Teardown
Entering the teardown phase, the first step is to pry open the front cover of the main unit.
Inside the body, a ring of arc-shaped magnets surrounds the central white anti-magnetic sheet, used for magnetically securing the smartphone.
Continuing the disassembly reveals the internal wireless charging coil.
Further separating the wireless charging module from the inner shell exposes the PCBA module.
An overview of the back side of the PCBA module.
After removing the PCBA board, flip it over to show the front side.
Removing the wireless charging coil further, it is wound with Litz wire.
An overview of the main unit's internal components: rear shell, cable reel and PCBA assembly, wireless charging coil, with magnetic ring inductors visible on the board.
Disassembling the cable reel further reveals the retractable cable wound around a circular spool, with a connector on the right side linking to the motherboard.
An NTC thermistor is connected to the coil for monitoring wireless charging temperature.
After removing the cable reel, the front side of the PCBA board is visible, showing buck-boost inductors, the DC input port, filter capacitors, etc.
An overview of the back side of the PCBA board shows the wireless charging controller, buck converter chip, protocol IC, and wireless charging power MOSFETs.
First, we see the buck converter chip from Powlicon, model PL5501. The PL5501 is a high-efficiency synchronous four-switch buck-boost DC-DC controller launched by Powlicon. It supports a wide input range of 3.6–32V and an adjustable output of 2–32V, providing seamless voltage regulation whether the input is higher or lower than the output. It is commonly used in scenarios such as car fast charging, USB PD, and outdoor energy storage, utilizing a QFN-32 package.
A matching buck-boost inductor.
The buck-boost switching MOSFETs come from PINGWEI, model PW055N04ESL. This device features 40V breakdown voltage and an ultra-low on-resistance of 3.5mΩ, using a DFN5×6 package.
Another buck-boost switching MOSFET also comes from PINGWEI, model PW055N04HSL. The PW055N04HSL is a 40V N-channel power MOSFET from Pingwei with an on-resistance of approximately 5.5mΩ, using a compact DFN3×3 package.
Two additional switching MOSFETs are also model PW055N04HSL.
The protocol IC comes from Injoinic, model IP2723T. This chip has passed USB IF Association PD3.0 PPS certification, TID: 3135. It is a fast charging protocol IC integrated with multiple protocols, designed for USB output ports. It supports various fast charging protocols including USB Type-C DFP, PD2.0/3.0, PPS, HVDCP QC4, QC4+, QC3.0/2.0, FCP, SCP, AFC, MTK PE+ 2.0/1.1, Apple 2.4A, BC1.2, and Samsung 2.0A. To the right is the TVS protection tube for the USB-C female connector, used for ESD protection, employing a QFN24 package.
It can provide a complete TYPE-C solution for single-direction output applications such as adapters and car chargers. Additionally, the IP2723T boasts high integration and rich functionality, requiring minimal external components in application, effectively reducing the overall solution size and lowering BOM costs.
Injoinic IP2723T datasheet information.
The VBUS MOSFET comes from Vergiga Semiconductor, model VS3618AE. This device is a 30V N-channel power MOSFET with an on-resistance of 6.4mΩ, using a PDFN3333 package.
The wireless charging controller also comes from Injoinic. The Injoinic IP6823 is a wireless charging transmitter control SoC compliant with WPC Qi standards, supporting BPP, PPDE, and EPP protocols. It can be used in wireless charging transmitter docks and magnetic self-waking wireless power banks. It uses a QFN24 package.
The chip internally integrates two half-bridge drivers, which work with external N+PMOS transistors to form an H-bridge, converting input DC electricity into the high-frequency AC required by the coil, supporting 5W–15W wireless charging. The chip allows adjustment of drive strength and dead time, balancing power driving performance and EMI characteristics according to solution requirements.
The IP6823 supports no-load and loaded foreign object detection, NTC temperature detection, coil voltage maximum amplitude limiting, as well as input over-voltage, under-voltage, and over-current protection. The chip includes an internal MTP ROM for firmware upgrades and supports customization of protocols, foreign object detection sensitivity, and indicator light effects.
The wireless charging power MOSFET comes from Yongyuan Microelectronics, model AP20G02BDF. The AP20G02BDF is a 20V N-channel + P-channel complementary dual MOSFET, with N-channel on-resistance of 12mΩ and P-channel of 25mΩ, using a PDFN3×3-8L package.
Close-up of the resonant capacitor.
A synchronous buck converter comes from Southchip Semiconductor, model SC8101. The SC8101 is a high-efficiency synchronous buck DC-DC converter supporting a wide input voltage range of 5V to 32V with an output current up to 5A and adjustable output voltage. It also provides precise output current limiting, entering constant current mode when the output reaches the set current limit. The chip integrates internal switches, simplifying peripheral components, and uses a 19-pin QFN package.
Detailed datasheet information for the SC8101.
An alloy inductor paired with the buck chip, specified at 4.7μH.
Close-up of a filter capacitor, specified at 35V 220μF.
Close-up of another filter capacitor, also specified at 35V 220μF.
Close-up of the DC input port.
Close-up of a switch.
Teardown complete, here is a family photo of all components.
Charging Head Network Summary
Finally, the bill of materials (BOM) for the product is attached for reference.
The CUKTECH No.10 Car Magnetic Wireless Charger includes a magnetic wireless charger, a 90W Type-C retractable cable, and a ball-joint stand kit. The car charger draws power from the cigarette lighter socket and supplies the main unit via a DC cable; the retractable cable achieves pull-to-charge functionality through a reel-and-slip-ring structure, tucking the connector into the side of the body when not in use, solving the long-standing issue of difficult cable management in cars; the main unit attaches to the air vent using the duckbill clip, allowing phones to charge immediately upon magnetic connection.
Through the teardown, Charging Head Network discovered that the internal circuitry of the main unit is divided into two paths. The Type-C retractable cable path uses the Powlicon PL5501 four-switch buck-boost controller, paired with one PW055N04ESL and three PW055N04HSL Pingwei MOSFETs (four in total), to convert 12-24V car voltage to a maximum 20V output. The protocol is controlled by the Injoinic IP2723T, and the VBUS switch MOSFET is the Vergiga VS3618AE. The wireless charging part is powered by the Southchip SC8101 buck converter. The Injoinic IP6823 wireless charging controller features built-in half-bridge drivers, working with Yongyuan Micro AP20G02BDF dual MOSFETs to form an H-bridge, driving the Litz wire coil to achieve 15W wireless charging. The coil is equipped with an NTC thermistor for temperature monitoring.