Cuktech 15 Air Tops 10 Power Banks, Reaching Full Charge in 54 Minutes

Q: The test found the fastest power bank to recharge itself. But which one is quickest at charging your actual devices?

The quickest at charging your devices appears to be **Anker’s Prime power bank**, not the Cuktech 15 Air that won ZDNET’s self-recharge test. ZDNET’s lab results were specifically about how fast each power bank could recharge its own battery from the wall, using a 70W USB-C adapter and energy logging. That is why the **Cuktech 15 Air** topped the ranking at **54 minutes** to refill itself. But that test did **not** directly measure how fast each model charged phones, tablets, or laptops. From the additional product data, the strongest evidence points to the **Anker Prime Power Bank (27,000mAh)** because it can deliver up to **250W output**, far above the other models mentioned. That makes it the most capable option for rapidly charging high-draw devices such as laptops, and it should also handle phones and tablets at their maximum supported USB-C PD speeds. Other fast device-charging contenders include the **Cuktech 15 Ultra** and **Ugreen Nexode 165W**, both rated up to **165W**, and the **Baseus EnerGeek GX11 MiFi**, which tops out at **67W**. For phones specifically, smaller banks such as the **Anker 633 Magnetic Battery** can still be very quick, with **20W wired USB-C PD**, but they are not in the same class as the Prime for overall output. So the short answer is: **Cuktech 15 Air recharged itself fastest, but Anker Prime is the best-supported pick for charging your actual devices the fastest.**

Q: As new rules ground large power banks, which of these top-rated, fast-charging models are still approved for air travel?

The air-travel-safe picks are the models that stay under the 100Wh passenger limit; among the fast-charging units tied to ZDNET’s testing and related recommendations, that clearly includes the Cuktech 15 Air, the Baseus EnerGeek GX11 4G MiFi, and several Anker and UGREEN models under roughly 27,000mAh. The Anker Prime unit highlighted by ZDNET’s lab is not generally safe under the new rules if it is the 250Wh version, because power banks above 100Wh are now barred for passengers. The clearest approved option from ZDNET’s fastest-charging test is the Cuktech 15 Air. ZDNET found it reached a full charge in 54 minutes, and related product information points to a 20,000mAh class battery, which is comfortably below the 100Wh ceiling. The Baseus EnerGeek GX11 4G MiFi, also cited in the test, is listed at 20,000mAh, so it also remains flight-eligible in carry-on baggage. Among related top-rated fast chargers from the same broader coverage, the Anker Prime 26K (26,250mAh, about 99.7Wh), Anker Prime 27K (rated at 100Wh), Anker Laptop Power Bank 25K, Anker Prime 20K, and UGREEN 145W Nexode 25K all remain within the usual airline threshold. They should still be allowed in carry-on bags, though airline-specific restrictions may apply. Travelers should check the printed Wh rating on the device itself. Under the March 2026 ICAO rules, passengers are limited to two power banks, they must be individually protected, carried only in cabin baggage, and cannot be recharged in flight.

2 articles · Updated · ZDNet · Jun 17

ZDNET’s lab found the Cuktech 15 Air was the fastest of 10 tested power banks, hitting 100% charge in 54 minutes and 50% in about 26 minutes.
A HOBOware plug load logger measured wall energy draw at one-minute intervals while each unit charged from 0% to 100% on a 70W USB-C adapter, letting testers compare 50%, 80% and full-charge milestones.
Anker Prime earned an honorable mention by fully charging in 100.2 minutes despite its much larger 250Wh capacity, while Baseus EnerGeek GX11 4G MiFi reached 50% in just over 13 minutes but needed more than 3 hours for a full charge.
ZDNET said the results provide a baseline rather than a universal real-world outcome, since charging speed can vary with power source and other conditions; the Cuktech also supports pass-through charging.