Disassembly Report: ROCK Portable PD30W GaN Triple-Output Power Bank

Introduction

ROCK is a Chinese digital accessory brand renowned for its high-quality and innovative designs, such as phone cases and screen protectors. It is characterized by its minimalist style and practical functionality, and is highly favored by consumers worldwide. Recently, the Charging Head Network obtained a triple-output power bank from ROCK. This product features a USB-C interface that supports 30W bidirectional fast charging and comes with a USB-C charging cable that also supports 30W PD fast charging. Additionally, it is equipped with a foldable national standard two-prong plug, which can be used as a charger. The power bank contains a single 5000mAh power cell from EVE Energy, with a nominal voltage of 3.65V and a nominal capacity of 5000mAh. The power bank solution employs the SW7201 buck-boost controller from Zhifeng and the protocol chip CSU3AF10 from Chipsen Technology for charging and discharging management. The main control chip for the switch-mode power supply is the DK036G from Dongke, a gallium nitride (GaN) integrated AC-DC power switch chip with quasi-resonant flyback control. The ROCK Portable PD30W GaN Triple-Output Power Bank is designed with ingenuity and features a stylish appearance. Let’s take a look at its internal structure and components.

Unboxing the ROCK Portable PD30W GaN Triple-Output Power Bank

As per tradition, let’s start with the product’s appearance and packaging. The outer packaging of the ROCK Portable PD30W GaN Triple-Output Power Bank is designed in white, with the blue “ROCK” logo at the top left corner and a proportional image of the product in the center. The product’s English name and key features are printed below. The side of the packaging box lists the product’s features, including the CCC certification mark, the 90° foldable plug, and the 5000mAh nominal capacity. A QR code for product authentication is also printed at the bottom. The back of the packaging box provides product specifications and core selling points.

Core Selling Points:

Triple-function design: power bank, charger, and built-in cable
PD30W fast charging
Microprocessor chip
Compact and portable

Specifications:

Product Name: ROCK Portable PD30W GaN Power Bank Adapter
Model Number: RWC-8890
Material: Fire-resistant PC
Capacity: 3.6V/5000mAh (18Wh)
Direct Charging Mode:
- Input: 100-240V~, 50/60Hz, 1.0A
- Output: Type-C port/Type-C cable: 5V3A, 9V3A, 12V2.5A, 15V2A, 20V1.5A
- Total output for Type-C port + Type-C cable: 5V=3A
Power Bank Mode:
- Input: Type-C port/Type-C cable: 5V3A, 9V2.22A
- Output: Type-C port/Type-C cable: 5V3A, 9V2.22A
- Total output for Type-C port + Type-C cable: 5V3A
Rated Capacity: 2500mAh (5V3A)
Energy Conversion Rate: >60%
Battery Type: Lithium-ion
Product Dimensions: Approximately 3235116mm
Weight: Approximately 167g
Color: Purple

The top of the packaging box contains production information. Upon removing the contents from the box, in addition to the ROCK triple-output power bank, there is also a user manual and a warranty card.

The ROCK Portable PD30W GaN Triple-Output Power Bank features a light purple, short cylindrical design with a flame-retardant PC material shell. The edges are smoothly rounded, providing a delicate touch. The overall design is lightweight, cute, and visually appealing. On the front of the product, there is a built-in cable and an integrated round button with an indicator light. The top features a cable slot where the built-in cable’s terminal fits perfectly. The slot is designed with a plated, glossy surface, raised above the plane, and engraved with “30W” and the product name. The integrated indicator light is a close-up of the round button, which, when pressed, indicates the remaining power level based on the number of purple LEDs. The built-in cable is secured with a cable tie to prevent it from unraveling. The cable itself is made of cylindrical woven material. The terminal is made of injection-molded material with no engravings. The length of the built-in cable is measured to be 20cm. The back of the product is engraved with safety and certification marks, as well as basic parameter information. The product has passed the CCC certification. Near the top is a 90° foldable national standard plug. The plug features a bi-wing design on both sides for added stability. A close-up of the foldable plug shows a smoothly rounded end. The top surface of the product reveals the wiring connections for the plug and the built-in cable. The wiring connection for the built-in cable is also marked with basic parameter information. The bottom of the product features a single USB-C port. A close-up of the USB-C port shows a green insulator inside, with parameter markings around it. The actual measurements of the power bank’s dimensions are as follows: length 116.02mm, width 35.65mm, and thickness 40.62mm. The product weighs approximately 167.0g. When placed in an adult’s palm, the shape and size can be felt. In power bank mode, using ChargerLAB POWER-Z KM003C, the USB-C port is measured to support QC2.0, PD3.0, DCP, and Apple 2.4A charging protocols. The PDO message indicates that the USB-C port has two fixed voltage levels for PD: 5V3A and 9V2.22A. The built-in USB-C cable is measured to support the same charging protocols and PD voltage levels as the C port in power bank mode. In adapter mode, using ChargerLAB POWER-Z KM003C, the built-in USB-C cable is measured to support QC2.0, FCP, AFC, PD3.0, DCP, and Apple 2.4A charging protocols. The PDO message indicates that the built-in USB-C cable has five fixed voltage levels for PD: 5V3A, 9V3A, 12V2.5A, 15V2A, and 20V1.5A. The built-in USB-C cable is measured to support the same charging protocols and PD voltage levels as the C port in adapter mode.

Disassembly of the ROCK Portable PD30W GaN Triple-Output Power Bank

Next, let’s explore the internal structure and components of the product. First, the outer shell is opened along the seam. The built-in cable slot is secured to the shell with screws. A close-up of the internal structure of the button-integrated indicator light is shown. Moving on to the internal structure of the shell, the upper part is the adapter module, the lower part is the power PCBA module, and the battery pack is located below the PCBA module. The adapter charging module is reinforced with adhesive. A close-up of the connection structure between the charger module and the power bank PCBA module is shown, with the wiring connections of the charger module also reinforced with adhesive. The LED light is covered with light-blocking cotton. A close-up of the screws used to secure the PCBA module is shown. After removing the screws, the connection between the PCBA module and the wires can be seen. A close-up of the solder joints for the positive and negative output wires on the PCBA module is shown. Further disassembly involves removing the PCBA module and the battery pack from the shell. A close-up of the solder joints for the two-prong plug’s charging wire on the charger module is shown. Important components are covered and secured with high-temperature tape. The two-prong plug module is secured with screws. Now, let’s see the full view of the battery pack. The surface of the battery pack in contact with the shell is glued and secured. On the other side, the wires and Mylar sheet can be seen. A close-up of the Mylar sheet, which is used for insulation. Both ends are secured with high-temperature tape. The battery pack’s tabs are connected with nickel strips and soldered to the wires. A close-up of the positive electrode welding point, with green kraft paper around it for insulation.

Top Menu

Main Menu