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100W GaN Charger

April 21, 2026

 

 

The Supertiny 100W GaN Charger by Rolling Square is a high-power charging solution designed to be the most compact 100W adapter on the market. The device is roughly the same size as a pair of earbuds or an AirPods case, which is approximately 65% smaller than the standard adapter. It is engineered specifically for mobility, aiming to eliminate the bulk traditionally associated with laptop-grade power bricks while maintaining full speed charging for high-energy devices.

The hardware utilizes Gallium Nitride (GaN) technology combined with a custom internal architecture to minimize size and weight. To manage heat in such a small form factor, Rolling Square optimized the voltage transformer and integrated heat conduction silicon and thermal sheets for even dissipation. The exterior features a ribbed design that prevents full fingertip contact, allowing the charger to feel cooler to the touch when being unplugged after a heavy load. The charger weighs approximately 100g for the US version, 105g for the EU version, and 115g for the UK version.

The Supertiny is a single-port USB-C charger that supports a wide range of charging protocols, including Power Delivery (PD) and PPS (Programmable Power Supply). Its output ranges from 5V/3A up to 20V/5A, delivering a maximum of 100W. This makes it capable of powering everything from smartphones and smartwatches to high-performance laptops and even some e-bikes. It is designed with universal voltage input (100-240V). Rolling Square offers three distinct models with fixed, non-interchangeable plugs for the US, EU, and UK regions to ensure a more stable and compact design.

 

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