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Coupons for all available versions: CUKTECH, a brand owned by ZMI and Xiaomi, offers really fast power banks with performance up to 300 W

14. August 2025 7 min read 3 comments

Last April, CUKTECH together with ZMI took part in the Global Sources consumer electronics fair in Hong Kong, where they first unveiled several new power banks. CUKTECH is also behind the ZMI PowerPack 20, an outstanding powerful power bank that earned recognition from several media outlets and users.

In the article, we’ll introduce 4 powerful power banks that we have discount coupons for with our partner Gshopper, with free delivery:

Note: At the end of the article, you’ll find a comparison of the specifications of all power banks.

About CUKTECH

CUKTECH, founded in 2016, is a company that focuses intensively on developing chargers and power banks. They’re known for their innovative design and high quality.

In 2022, CUKTECH joined forces with the ZMI brand team, which is 100% a subsidiary of Xiaomi, expanding its presence.

Their clients include international tech giants such as LG, Hitachi, and Xiaomi. By focusing on providing the next generation of portable charging and power solutions, CUKTECH sells its products through distribution channels in more than 100 countries and regions worldwide.

A curiosity is the naming, which is inspired by the surname of Serbian engineer Slobodan Ćuk, the inventor of the DC-DC converter.

CUKTECH 30

Xiaomi Planet shopping tip: GShopper has now launched direct bank transfer payments, so you can save another 4.5 % off the product price! Compared to card / Google Pay payment, you can get this product much cheaper. We described the full bank transfer payment process in our article.
XiaomiPlanet deal

CUKTECH 30 40 000 mAh 300 W

CUKTECH 30, 40 000 mAh, 300 W
CUKTECH 30 40 000 mAh 300 W
Standard Shipping GShopper
152,41 €You save 20,94 €
131,47 €
Coupongshopperrc0531

Price history

3,31 €cheaper than the average price
Cheapest 127,88 €Most expensive 140,68 €
GET DISCOUNT →
Is it your first time shopping on GShopper? See the guide!
Updated 14. 8. 2025 on 06:16
TIPWith Standard Shipping via GShopper, you pay no extra fees—everything is already included!

With the GShopper seller, we recommend choosing Standard Shipping, where you won’t pay anything extra. Customs fees and any VAT are handled by the seller. You can select the shipping method in the cart only, after entering your delivery address. Delivery with this option usually takes about 15 business days from dispatch from the warehouse, but it may take longer.

Track this product’s price

As soon as we post a new coupon, we’ll send you an email. You can unsubscribe from tracking anytime.

Is it your first time shopping on GShopper?

GShopper is an international online store with warehouses not only in China, but also directly in the EU. You can complete your order in just a few minutes. Enter your address without diacritics, choose bank transfer as the payment method—it works out cheaper than a card—and enter the discount coupon before you submit your order.

  1. Register or log inOn GShopper, you create an account, or you can log in via Google or Facebook. You can also shop without registering, but with an account you’ll see your order status and it’s easier to handle any possible claim.
  2. Get to the product using our buttonIn our article, click the GET THE DISCOUNT button—this will open exactly the product and the version the coupon applies to. Then on the product page, click Buy Now or Add to Cart.
  3. Fill in the address WITHOUT diacriticsWrite your name, street and city without accents — so Zilina, not Žilina. Foreign carrier systems can’t handle diacritics and the package may get stuck. Check your ZIP code and phone number, including the country code.
  4. Choose shipping and check the warehouseMost products come with free shipping—if Free Shipping is available, choose it. Items shipped from an EU warehouse arrive in 2 to 7 business days and don’t go through customs clearance; dispatch from China or Hong Kong takes 7 to 45 days depending on the shipping method you choose. Continue with the Next button.
  5. For payment, choose bank transfer and saveIn checkout, you pick from the available options Bank Transfer, Credit Card and PayPal. Choose bank transfer—GShopper gives you an additional discount that, depending on the product, is 3 to 4,5 % compared to card payment. In the order summary, you’ll see it as a separate line.GShopper will then show you the bank account number and the amount in the line Amount to Transfer and a reference that you need to include in the note for the recipient. You make the transfer in your bank; the account is held in EUR within the EU—so it’s a standard SEPA transfer.
    Súhrn objednávky na Gshopperi so zľavou za bankový prevod
    The discount for bank transfer will appear as a separate line in the order summary.
  6. Enter the coupon and submit your orderPut the coupon into the field Discount Code and confirm with the button Apply. Only one coupon can be applied at a time. The price in the summary must be recalculated right away—if it didn’t change, the coupon wasn’t applied. Then submit your order by clicking Place Order.After payment, you’ll receive a confirmation email and you can also find your order in your account under the section My Orders.
    Políčko Discount Code v pokladni Gshopper s tlačidlom Apply
    You’ll find the coupon box at checkout under the payment method selection.
Enter the coupon before you click on Place Order. A discount won’t be added automatically to the completed order. If you forget the promo code, you’ll have to write via [email protected] — they may not have to comply.
You can change or cancel your order within 12 hours e-mail to [email protected]. Warranty varies by category: Xiaomi phones, Redmi and POCO have 24 months, tablets and e-scooters 12 months, earbuds, smartwatches and other Xiaomi products 6 months.
Our extra service with VIP support — we’ll handle the order on Gshopper for you and ship it straight to your address.

If you don’t have experience buying on Gshopper, payments don’t go through, or coupon use doesn’t work for you, we offer an order handling service directly to your address for our readers and customers. You transfer the money to our account and we place the order directly to your address. This way, you won’t have to worry about a failed payment or applying the coupon, and you can be sure the entire order will go through correctly 100 %. In addition, you automatically get our VIP support — if any issues arise with the shipment, we handle them for you and assist with filing a claim. The fee for this service is €15 extra of the product price. You can contact us by email at info(@)xiaomiplanet.sk or on Messenger, where we’re constantly active.

At the electronics expo, one of the most impressive products was the Power Bank CUKTECH 30. This upgraded successor to the powerful power bank ZMI PowerPack No. 20 with model number P01CT offers several major improvements.

First of all, the CUKTECH 0 features a square exterior design with a handle for easy carrying. The color scheme is silver-and-black, with a transparent cover on top. Product dimensions are 86.8 x 88.6 x 106.5 mm.

Next, under the black transparent front panel, there’s a large digital display. It shows information such as the remaining battery percentage, input and output power, making it easier to understand the device’s charging status.

Moreover, the CUKTECH 30 also boasts impressive specs. The transparent top panel includes a built-in 20 W wireless charging coil, a 2A2C USB fast-charging module at the front, and USB-C1 that supports the fast PD 3.1 charging standard with a maximum power of 140 W (28 V 5 A). It also includes USB-C2 with support for fast charging of 100 W, USB-A1 with fast charging support of 120 W (20 V 6 A), and USB-A2 with fast charging support of 22.5 W.

The number and specifications of the ports are incredibly powerful and support charging up to 5 devices at the same time with a maximum output power of 300 W.

On the side of the device, there is a 40 000 mAh label, revealing that it contains battery cells that together make up a 144 Wh / 40 000 mAh energy reservoir. The battery cells use 21700 batteries (also used in Tesla electric cars), which offer a significant improvement in energy density and charging and discharging performance compared to the more common 18650 batteries.

CUKTECH 20

XiaomiPlanet deal

CUKTECH 20 25 000 mAh, 210 W

CUKTECH 20, 25 000 mAh, 210 W
CUKTECH 20 25 000 mAh, 210 W
Standard Shipping GShopper
122,85 €You save 20,40 €
102,45 €
Coupongshopperrc0531

Price history

3,12 €cheaper than the average price
Cheapest 99,65 €Most expensive 111,68 €
GET DISCOUNT →
Is it your first time shopping on GShopper? See the guide!
Updated 14. 8. 2025 on 06:16
TIPWith Standard Shipping via GShopper, you pay no extra fees—everything is already included!

With the GShopper seller, we recommend choosing Standard Shipping, where you won’t pay anything extra. Customs fees and any VAT are handled by the seller. You can select the shipping method in the cart only, after entering your delivery address. Delivery with this option usually takes about 15 business days from dispatch from the warehouse, but it may take longer.

Track this product’s price

As soon as we post a new coupon, we’ll send you an email. You can unsubscribe from tracking anytime.

Is it your first time shopping on GShopper?

GShopper is an international online store with warehouses not only in China, but also directly in the EU. You can complete your order in just a few minutes. Enter your address without diacritics, choose bank transfer as the payment method—it works out cheaper than a card—and enter the discount coupon before you submit your order.

  1. Register or log inOn GShopper, you create an account, or you can log in via Google or Facebook. You can also shop without registering, but with an account you’ll see your order status and it’s easier to handle any possible claim.
  2. Get to the product using our buttonIn our article, click the GET THE DISCOUNT button—this will open exactly the product and the version the coupon applies to. Then on the product page, click Buy Now or Add to Cart.
  3. Fill in the address WITHOUT diacriticsWrite your name, street and city without accents — so Zilina, not Žilina. Foreign carrier systems can’t handle diacritics and the package may get stuck. Check your ZIP code and phone number, including the country code.
  4. Choose shipping and check the warehouseMost products come with free shipping—if Free Shipping is available, choose it. Items shipped from an EU warehouse arrive in 2 to 7 business days and don’t go through customs clearance; dispatch from China or Hong Kong takes 7 to 45 days depending on the shipping method you choose. Continue with the Next button.
  5. For payment, choose bank transfer and saveIn checkout, you pick from the available options Bank Transfer, Credit Card and PayPal. Choose bank transfer—GShopper gives you an additional discount that, depending on the product, is 3 to 4,5 % compared to card payment. In the order summary, you’ll see it as a separate line.GShopper will then show you the bank account number and the amount in the line Amount to Transfer and a reference that you need to include in the note for the recipient. You make the transfer in your bank; the account is held in EUR within the EU—so it’s a standard SEPA transfer.
    Súhrn objednávky na Gshopperi so zľavou za bankový prevod
    The discount for bank transfer will appear as a separate line in the order summary.
  6. Enter the coupon and submit your orderPut the coupon into the field Discount Code and confirm with the button Apply. Only one coupon can be applied at a time. The price in the summary must be recalculated right away—if it didn’t change, the coupon wasn’t applied. Then submit your order by clicking Place Order.After payment, you’ll receive a confirmation email and you can also find your order in your account under the section My Orders.
    Políčko Discount Code v pokladni Gshopper s tlačidlom Apply
    You’ll find the coupon box at checkout under the payment method selection.
Enter the coupon before you click on Place Order. A discount won’t be added automatically to the completed order. If you forget the promo code, you’ll have to write via [email protected] — they may not have to comply.
You can change or cancel your order within 12 hours e-mail to [email protected]. Warranty varies by category: Xiaomi phones, Redmi and POCO have 24 months, tablets and e-scooters 12 months, earbuds, smartwatches and other Xiaomi products 6 months.

CUKTECH 20, a portable charger with a capacity of 25 000 mAh and a maximum power of 210 W, was another product that caught attention. This power bank supports the latest PD 3.1 fast-charging protocol for quick charging of devices like the MacBook Pro.

It also comes with a 3-port configuration of 2C1A and an intelligent 1.54″ TFT display. The display shows battery status information in real time, such as battery level, power, voltage, and current.

What’s more, CUKTECH 20 features an auto-grade battery with over 1 000 charge cycles. That’s more than 3 times the lifespan of typical power banks. With this reliable power source, you can charge your MacBook Pro 1.2 times or iPhone 14 up to 4 times.

Even more impressively, it can charge up to 3 devices at the same time. The power bank has 3 ports with different maximum outputs: 140 W for the Type-C1 port, 60 W for the Type-C2 port, and 30 W for the USB-A port.

Its compact design is about the size of a soda can (55.1 x 55.1 x 159.9 mm). You’ll also like the gray matte finish with a futuristic blue light strip, and a weight of 632 g, making it a handy travel companion.

CUKTECH 15

XiaomiPlanet deal

CUKTECH 15 20 000 mAh 150 W

CUKTECH 15, 20 000 mAh, 150 W
CUKTECH 15 20 000 mAh 150 W
Standard Shipping GShopper
71,12 €You save 13,93 €
57,19 €
Coupongshopperrc0531

Price history

2,97 €more expensive than the average price
Cheapest 50,26 €Most expensive 64,48 €
GET DISCOUNT →
Is it your first time shopping on GShopper? See the guide!
Updated 14. 8. 2025 on 06:16
TIPWith Standard Shipping via GShopper, you pay no extra fees—everything is already included!

With the GShopper seller, we recommend choosing Standard Shipping, where you won’t pay anything extra. Customs fees and any VAT are handled by the seller. You can select the shipping method in the cart only, after entering your delivery address. Delivery with this option usually takes about 15 business days from dispatch from the warehouse, but it may take longer.

Track this product’s price

As soon as we post a new coupon, we’ll send you an email. You can unsubscribe from tracking anytime.

Is it your first time shopping on GShopper?

GShopper is an international online store with warehouses not only in China, but also directly in the EU. You can complete your order in just a few minutes. Enter your address without diacritics, choose bank transfer as the payment method—it works out cheaper than a card—and enter the discount coupon before you submit your order.

  1. Register or log inOn GShopper, you create an account, or you can log in via Google or Facebook. You can also shop without registering, but with an account you’ll see your order status and it’s easier to handle any possible claim.
  2. Get to the product using our buttonIn our article, click the GET THE DISCOUNT button—this will open exactly the product and the version the coupon applies to. Then on the product page, click Buy Now or Add to Cart.
  3. Fill in the address WITHOUT diacriticsWrite your name, street and city without accents — so Zilina, not Žilina. Foreign carrier systems can’t handle diacritics and the package may get stuck. Check your ZIP code and phone number, including the country code.
  4. Choose shipping and check the warehouseMost products come with free shipping—if Free Shipping is available, choose it. Items shipped from an EU warehouse arrive in 2 to 7 business days and don’t go through customs clearance; dispatch from China or Hong Kong takes 7 to 45 days depending on the shipping method you choose. Continue with the Next button.
  5. For payment, choose bank transfer and saveIn checkout, you pick from the available options Bank Transfer, Credit Card and PayPal. Choose bank transfer—GShopper gives you an additional discount that, depending on the product, is 3 to 4,5 % compared to card payment. In the order summary, you’ll see it as a separate line.GShopper will then show you the bank account number and the amount in the line Amount to Transfer and a reference that you need to include in the note for the recipient. You make the transfer in your bank; the account is held in EUR within the EU—so it’s a standard SEPA transfer.
    Súhrn objednávky na Gshopperi so zľavou za bankový prevod
    The discount for bank transfer will appear as a separate line in the order summary.
  6. Enter the coupon and submit your orderPut the coupon into the field Discount Code and confirm with the button Apply. Only one coupon can be applied at a time. The price in the summary must be recalculated right away—if it didn’t change, the coupon wasn’t applied. Then submit your order by clicking Place Order.After payment, you’ll receive a confirmation email and you can also find your order in your account under the section My Orders.
    Políčko Discount Code v pokladni Gshopper s tlačidlom Apply
    You’ll find the coupon box at checkout under the payment method selection.
Enter the coupon before you click on Place Order. A discount won’t be added automatically to the completed order. If you forget the promo code, you’ll have to write via [email protected] — they may not have to comply.
You can change or cancel your order within 12 hours e-mail to [email protected]. Warranty varies by category: Xiaomi phones, Redmi and POCO have 24 months, tablets and e-scooters 12 months, earbuds, smartwatches and other Xiaomi products 6 months.

CUKTECH 15, a power bank with a capacity of 20 000 mAh and a maximum output of 150 W, is designed to charge smartphones and laptops at the same time. With its large capacity, it can extend iPhone 14 battery life up to 3.3 times.

Like its siblings, it has a futuristic design—about the size of a 330 ml Coca-Cola can—and it can be placed vertically. With dimensions of 163 x 57 x 39.9 mm, it saves space.

It also features a small display in the top-left corner that shows the remaining battery capacity. The power bank’s body is made from PVC, a non-flammable material that ensures efficient heat dissipation. On the bottom, there’s a unique textured design with small “Y” protrusions and grooves on a rubber base pad, increasing friction and allowing a firmer grip. Even more impressively, it comes with a 240 W 6 A fast-charging cable.

The CUKTECH 15 power bank offers fast charging for laptops with a 100 W output via the Type-C1 port (up to 120 W for Xiaomi phones), while the Type-C2 and USB-A1 ports provide 33 W.

The power bank can charge at ultra-fast speeds—it can reach 50% charge in 30 minutes, which is enough to fully charge the iPhone 14 about 1.6 times.

CUKTECH 10

XiaomiPlanet deal

CUKTECH 10 10 000 mAh 150 W

CUKTECH 10, 10 000 mAh, 150 W
CUKTECH 10 10 000 mAh 150 W
Standard Shipping GShopper
55,41 €You save 21,27 €
34,14 €
Coupongshopperrc0531

Price history

3,85 €cheaper than the average price
Cheapest 34,14 €Most expensive 50,37 €
GET DISCOUNT →
Is it your first time shopping on GShopper? See the guide!
Updated 14. 8. 2025 on 06:17
TIPWith Standard Shipping via GShopper, you pay no extra fees—everything is already included!

With the GShopper seller, we recommend choosing Standard Shipping, where you won’t pay anything extra. Customs fees and any VAT are handled by the seller. You can select the shipping method in the cart only, after entering your delivery address. Delivery with this option usually takes about 15 business days from dispatch from the warehouse, but it may take longer.

Track this product’s price

As soon as we post a new coupon, we’ll send you an email. You can unsubscribe from tracking anytime.

Is it your first time shopping on GShopper?

GShopper is an international online store with warehouses not only in China, but also directly in the EU. You can complete your order in just a few minutes. Enter your address without diacritics, choose bank transfer as the payment method—it works out cheaper than a card—and enter the discount coupon before you submit your order.

  1. Register or log inOn GShopper, you create an account, or you can log in via Google or Facebook. You can also shop without registering, but with an account you’ll see your order status and it’s easier to handle any possible claim.
  2. Get to the product using our buttonIn our article, click the GET THE DISCOUNT button—this will open exactly the product and the version the coupon applies to. Then on the product page, click Buy Now or Add to Cart.
  3. Fill in the address WITHOUT diacriticsWrite your name, street and city without accents — so Zilina, not Žilina. Foreign carrier systems can’t handle diacritics and the package may get stuck. Check your ZIP code and phone number, including the country code.
  4. Choose shipping and check the warehouseMost products come with free shipping—if Free Shipping is available, choose it. Items shipped from an EU warehouse arrive in 2 to 7 business days and don’t go through customs clearance; dispatch from China or Hong Kong takes 7 to 45 days depending on the shipping method you choose. Continue with the Next button.
  5. For payment, choose bank transfer and saveIn checkout, you pick from the available options Bank Transfer, Credit Card and PayPal. Choose bank transfer—GShopper gives you an additional discount that, depending on the product, is 3 to 4,5 % compared to card payment. In the order summary, you’ll see it as a separate line.GShopper will then show you the bank account number and the amount in the line Amount to Transfer and a reference that you need to include in the note for the recipient. You make the transfer in your bank; the account is held in EUR within the EU—so it’s a standard SEPA transfer.
    Súhrn objednávky na Gshopperi so zľavou za bankový prevod
    The discount for bank transfer will appear as a separate line in the order summary.
  6. Enter the coupon and submit your orderPut the coupon into the field Discount Code and confirm with the button Apply. Only one coupon can be applied at a time. The price in the summary must be recalculated right away—if it didn’t change, the coupon wasn’t applied. Then submit your order by clicking Place Order.After payment, you’ll receive a confirmation email and you can also find your order in your account under the section My Orders.
    Políčko Discount Code v pokladni Gshopper s tlačidlom Apply
    You’ll find the coupon box at checkout under the payment method selection.
Enter the coupon before you click on Place Order. A discount won’t be added automatically to the completed order. If you forget the promo code, you’ll have to write via [email protected] — they may not have to comply.
You can change or cancel your order within 12 hours e-mail to [email protected]. Warranty varies by category: Xiaomi phones, Redmi and POCO have 24 months, tablets and e-scooters 12 months, earbuds, smartwatches and other Xiaomi products 6 months.

In terms of power, CUKTECH 10 supports PD 3.1 100 W output power. In real-world terms, that means 100 W for laptops, up to 27 W for iPhones, 45 W for Samsung Galaxy devices, 65 W for the ROG Ally, and 100 W for the Legion Go.

It’s also important to note that thanks to its 10 000 mAh capacity, it can charge the iPhone 15 Pro Max 1.3 times, the Samsung Galaxy S24 Ultra 1.4 times, or a 16-inch MacBook Pro 0.3 times.

However, 100 W isn’t its maximum potential. When paired with the latest flagship devices Xiaomi, like Xiaomi 13 Pro, its maximum single-port output can reach up to 130 W. That means it can fully charge Xiaomi 13 Pro in just 19 minutes. A similar maximum output power can also be found on other Xiaomi and Redmi phones, all thanks to the built-in support for the Xiaomi HyperCharge protocol.

When it comes to multi-port charging, the CUKTECH 10 Power Bank is just as powerful. Specifically, it can deliver up to 120 W + 33 W for Xiaomi phones and another device. If you don’t have a Xiaomi phone but need to use it to charge a laptop, it can still provide 100 W + 33 W.

As for input, its bidirectional fast-charging USB-C port has a maximum input power of 90 W, which can charge it to 55% in just 15 minutes—enough for a one-time charge of iPhone 15.

Also, considering that not many people have high-speed cables that support PD 3.1, CUKTECH thoughtfully included, even with the 15 power bank, a 240 W 6 A fast-charging cable to maximize the power bank’s potential.

Besides performance, the biggest highlight of the CUKTECH 10 is its built-in Smart TFT display, which provides key information such as voltage, current, output power, and the remaining charging time.

The advantage is that the 10 is the smallest in the entire CUKTECH lineup—about the size of a Snickers.

Comparison of CUKTECH power banks

-CUKTECH 10CUKTECH 15CUKTECH 20CUKTECH 30
Capacity10 000 mAh20 000 mAh25 000 mAh40 000 mAh
Ports1 Type-C + 1 USB-A2 Type-C + 1 USB-A2 Type-C + 1 USB-A2 Type-C + 2 USB-A
Power with a single port120 W120 W140 W140 W
Power with multiple ports150 W150 W210 W300 W
DisplayRemaining capacity; remaining charging/discharging time; total input/output power with a single port; current with a single port; voltage with a single portRemaining capacityRemaining capacity; remaining charging/discharging time; total input/output power; current with a single port; voltage with a single portRemaining capacity and input/output power
Port expansion---✓
Wireless charging---✓
Output on multiple ports✓✓✓✓
Dimensions143 x 45 x 33.4 mm163 x 57 x 39.9 mm159.9 x 55.1 x 55.1 mm106.5 x 86.8 x 86.8 mm
Suitable for:Roads; trips and field workRoads; trips and field workBusiness trips; field work and outdoor activitiesOutdoor photography; media; outdoor activities
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