With three output interfaces – a powerful 140W Type-C, a fast 60W Type-C, and a reliable 30W USB-A port – No.20 offers the versatility to charge multiple devices simultaneously. The combined output reaches an impressive 210W, making it perfect for powering high-demand devices or quickly charging multiple gadgets.

The 140W Type-C interface of No.20 supports the PD3.1 protocol, enabling rapid charging for a wide range of devices. Whether it’s your smartphone, tablet, laptop, or other USB-C powered gadgets, No.20 delivers blazing-fast charging speeds, ensuring your devices are powered up in no time. 

No.20 is equipped with a high-capacity 25,000mAh battery, ensuring ample power to keep your devices charged on the go. From smartphones to tablets and even laptops, it has the energy you need for extended usage without worrying about running out of power.

No.20 harnesses the remarkable power of five Tesla-grade 21700 power cells, which are widely used in cutting-edge electric vehicles. These advanced power cells, known for their exceptional performance and reliability, provide No.20 with the same level of quality and energy efficiency found in electric vehicles produced by Tesla and other leading automotive manufacturers. 

The battery has multiple safety protections, including overheating protection, short circuit protection, overcharging protection, and more. These safety features protect the No.20&No.30 power banks and the connected devices.

Stay informed about your charging and discharging status with the integrated 1.54″ TFT color screen. This intuitive display provides a graphical representation of input and output data, allowing you to easily monitor the charging process, remaining battery level, and other vital information at a glance.

No.30&No.20 are certified with CE, FCC, RoHS, and MSDS, ensuring compliance with international safety and quality standards. These certifications affirm that No.30&No.20 meet the rigorous requirements for product safety, electromagnetic compatibility, environmental protection, and adherence to hazardous substance regulations.

The European Product Design Awards (ePDA) is known for its presence at prestigious design fairs worldwide, where it actively engages with the latest business developments and closely observes cutting-edge innovations in consumer goods and technology.

CUKTECH’s No.30 power bank has been honored with the esteemed 2023 Best of Show award by ePDA. 

With a revolutionary total output of 300W, it fast charges even the most power-hungry devices such as laptops and gaming consoles.

Rest assured, our laboratory testing has confirmed that No.30 delivers exceptional output performance, reaching an impressive maximum tested output over 305W.

No.30 power bank offers five versatile output ports for all your charging needs. With 140W and 100W USB-C ports, 22.5W and 120W USB-A ports, and a 20W wireless charging platform, you can charge a wide range of devices quickly and conveniently.

Simultaneous charging is the perfect solution for any household, office, travel, or any situation where multiple devices require charging. 

20W wireless charging enjoys the convenience of rapid charging without the need for cables.

Massive 40000mAh capacity, this power bank can fully charge an iPhone 14 up to 7 times.

No.30 allows recharging while simultaneously powering other devices. Keep your smartphone, tablet, or other gadgets charged up, while No.30 replenishes its energy reserves. Enjoy the freedom of never having to choose between charging yourself or your devices. With No.30, you can do both simultaneously, keeping you connected and fully charged at all times.

Experience the power of the 140W Input/Output Type-C port with No.30. Delivering high-speed power delivery for your MacBook, laptop, or other power-hungry devices.

Support two-way bi-directional charging, enabling you to quickly recharge No.30 itself while charging your devices, ensuring you have reliable power whenever you need it.

The 140W bi-directional Type-C interface empowers NO.30 with rapid charging capabilities, allowing it to charge from 0 to 100% in just 2.5 hours. Experience lightning-fast charging and enjoy uninterrupted power with NO.30.

Samsung 21700 cells have made waves in the industry for their outstanding performance and reliability. The same cells are utilized in Tesla and other electric vehicles. offer significant advancements compared to traditional 18650 cells in terms of single-cell capacity, energy density, and charge-discharge performance.

• Energy Density: With an impressive volumetric energy density of 723Wh/L, the 21700 battery outshines the 18650 battery. It packs more power into a smaller size, delivering longer-lasting performance for your devices.
• Cycle Life: The 21700 battery offers a lifespan of 500 cycles (0.5C charge/1C discharge), surpassing the 18650 battery. It ensures reliable power over an extended period, reducing the need for frequent replacements.
• Capacity: Boasting a higher single-cell rated capacity of 5000mAh, the 21700 battery provides more energy storage for your devices, enabling longer usage times between charges.

No.30 provides rapid charging for smartphones and laptops, ensuring quick and efficient power delivery.

Activate the low-current mode to safeguard small devices such as Bluetooth earphones, smartwatches, and other low-power gadgets, offering optimal charging without any risks.

Extreme Power protocol for your Xiaomi Devices compatible with your “HyperCharge“ (120W/100W) on Xiaomi smartphones, explore the full potential of No.30 with a remarkable maximum output power of up to 320W!

PWM Fans for Gaming Console-Level Heat Dissipation Design. The fan speed changes in real-time according to the charging power. Incredible heat dissipation for even long-term high-power output.

No.30 is designed with a convenient handle for easy portability. With its compact size and lightweight design, it can be easily carried anywhere you go. What’s more, with a capacity of 141Wh, our power bank meets the regulations for air travel and can be brought on board the airplane after proper notification.

A complimentary GaN (Gallium Nitride) Charger worth $20 (EU or US plug) for the first 100 backers.

CUKTECH: Innovating Power Supply Technology for a Sustainable Future.

At CUKTECH, we are a pioneering enterprise dedicated to advancing power supply technology. Our name “CUK” draws inspiration from the Cuk circuit, a world-renowned DC-DC circuit topology known for its high efficiency, low fluctuation, and flexibility. Named after electrical engineer Slobodan Čuk, this circuit has inspired us to inherit its exceptional qualities and lead the way with innovative, efficient, and reliable power supply solutions.

As a testament to our commitment, over 70% of our team comprises R&D and quality professionals. With a decade of experience operating ZMI, our core team brings extensive practical knowledge and research achievements to the development of power supplies. Our mobile power products, designed and developed between 2014 and 2018, have successfully shipped over 100,000,000 units to more than 100 countries and regions, earning recognition and praise from users worldwide.

We pride ourselves on our dedication to quality and innovation, as evidenced by international industrial design accolades including Germany’s iF Design Award, the German Red Dot Award, and the Japanese G-Mark Award. These accolades solidify our reputation among industry peers and consumers, reflecting our commitment to exceptional craftsmanship and design.

At CUKTECH, we believe in a sustainable future powered by cutting-edge technology. Join us on this journey as we shape the power supply landscape and contribute to a better world.

Our factory adheres to strict standards and quality testing, and we are currently in total production of No.30 or No.20! We are committed to ensuring that our INDIEGOGO backers receive their surprises on time and we will keep updated on the progress of production and shipping for you.