Ultra-Thin GaN Chargers: A New Benchmark for Fast Charging Portability, In-Depth Analysis of Four Popular Models

With the rapid popularization of Gallium Nitride (GaN) technology, the miniaturization of fast-charging devices has become an industry norm. However, among numerous miniaturized chargers, the "ultra-thin cookie" type products have emerged as the culmination of industrial design and technological innovation, thanks to their extreme thickness control and scenario adaptability. As a typical thin phone charger and slim body charger, they feature an ultra-slim body of only 1-2 cm, which not only can slide into pockets easily for "unconscious carrying" but also can calmly handle extreme scenarios that traditional chargers are hard to reach, such as the back of sofas and narrow gaps, redefining the portability boundary of fast-charging devices.

The Secret of Extreme Thinness: Innovative Breakthroughs in Internal Architecture

The "slim gene" of ultra-thin GaN chargers stems from a fundamental innovation in internal stacking methods. Such products generally adopt planar transformers and highly integrated circuit architectures, breaking the limitation that traditional chargers rely on Z-axis height, and realizing the flat and intensive layout of core components. Meanwhile, the high thermal conductivity potting process is standard inside the body. While greatly improving the overall heat dissipation efficiency and avoiding local overheating, it also makes the internal structure as tight and stable as a solid brick, which not only ensures the stability of power output but also further compresses the body thickness—key to making a high-performance thin usb c charger.

Baseus 65W Ultra-Thin GaN Charger: A Portable Choice for Business Trips and Commutes

This charger from Baseus adopts a classic "cookie-style" ultra-thin body design with a thickness of only about 16.5mm. Equipped with foldable pins, it can be easily stored without taking up space whether placed in a laptop bag compartment or a portable pocket, focusing on the portable experience for business trips and commuting scenarios. In terms of interface configuration, it provides a 1A1C dual-interface combination and is built with a high-performance GaN chip. Compatible with various mainstream fast-charging protocols such as PD3.0, PPS, FCP, AFC, and QC, this slim body charger can not only meet the full-power fast-charging needs of laptops and tablets but also adapt to mainstream mobile phones and various small digital devices.

In terms of performance, the USB-C port supports a maximum output of 65W when used alone, providing multiple fixed voltage levels of 5-20V and a PPS voltage range of 3.3-11V/5A, which can perfectly adapt to devices such as thin and light laptops and game consoles. The USB-A port also supports a maximum fast charging of 60W. When dual ports are outputting at the same time, it can intelligently achieve a power distribution of 45W+20W, easily coping with the simultaneous charging scenario of combined devices such as "laptop + mobile phone" or "tablet + mobile phone"—proving itself a versatile thin phone charger.

CUKTECH No.6 GaN Power Card: An Extremely Compact Power Solution

CUKTECH No.6 GaN Power Card has achieved a significant breakthrough in volume, weight, and thickness by virtue of its self-developed TOB technology. Its body is as small as a card with a slim thickness, which can be easily stuffed into a pocket. Combined with the foldable pin design, it further reduces storage space, making travel charging more convenient. In terms of heat dissipation, the product adopts efficient heat dissipation technology and is equipped with a chip-level temperature control system, which can intelligently identify the device status in real-time and adjust the body temperature, ensuring the stability and safety of long-term charging as a reliable thin usb c charger.

In terms of interfaces, the charger is equipped with dual USB-C interfaces. The C1 port supports a maximum fast charging of 65W when used alone, and the C2 port supports a maximum fast charging of 22.5W when used alone. At the same time, it is equipped with ADC 2.0 fast charging technology, which can intelligently match various protocols such as PD3.0, QC3.0, AFC, and PPS. More specially, it supports Xiaomi's private fast-charging protocol, which can provide accurately adapted fast-charging services for mobile phones, tablets, laptops and other different types of devices of multiple brands—serving as an excellent slim body charger.

HUAWEI 66W Card All-Round Charger: An All-Round Partner for Ecosystem Devices

HUAWEI 66W Card All-Round Charger achieves a perfect balance between high-power output and smaller volume with an innovative ultra-thin architecture. It adopts GaN technology and COB highly integrated planar transformer, compressing the body thickness to only 10.5mm. With the foldable pin design, it is light in weight and convenient to store, and can be easily put into a pocket for carrying. In addition, the charger also comes with a 50cm long 6A USB-C to USB-C cable, which can be used immediately after unpacking—an ideal thin phone charger for Huawei users.

In terms of protocol compatibility, this charger not only supports 66W super fast charging for Huawei's own ecosystem devices such as mobile phones, tablets, headphones, and smart watches but also can provide a maximum 65W PD fast charging for laptops that support the PD protocol, meeting the needs of simultaneous charging of multiple devices. It is worth mentioning that it has passed the unified fast charging UFCS protocol certification and is also compatible with various mainstream protocols such as PD, PPS, and QC, with excellent cross-brand device adaptation capability. The built-in intelligent control chip can dynamically monitor the charging status and automatically switch to trickle mode before the device is fully charged, effectively protecting battery health as a high-quality thin usb c charger.

llano 65W Card GaN Charger: A Minimalist Device for Commutes and Business Trips

This card-type GaN charger from llano focuses on the dual advantages of "thin and light + portable". It adopts a new generation of planar voltage transformation technology and is supported by an intelligent temperature control chip, which greatly optimizes the circuit efficiency and power density. The flat body design controls the thickness at 14.6mm, and it is equipped with foldable pins, which can be easily stored in daily pockets and laptop bag compartments. The interface layout is concise and restrained, adopting a dual USB-C interface design, matched with a frosted shell and simple color scheme. The overall style is more oriented to the daily portable equipment positioning of commuting and business trip users as a practical slim body charger.

In terms of performance, the single port supports a maximum output of 65W power, compatible with common fast-charging protocols such as UFCS, PD3.0, PPS, QC, FCP, and SCP. It can provide fast-charging services for thin and light laptops, tablets, and various mobile phones. At the same time, it can perfectly adapt to devices such as Apple iPhone 16/17 series, MacBook, and mainstream Windows laptops, truly realizing the travel charging demand of "one charger for both mobile phone and computer", simplifying the user's portable equipment as a handy thin phone charger.