CUKTECH 20 Review: The Power Bank That Punches Above Its Weight

The power bank market is flooded with indistinguishable black rectangles that all promise fast charging and big capacity. The CUKTECH 20 breaks the mold. Backed by Xiaomi’s supply chain expertise, this 25,000mAh power bank delivers 140W USB PD 3.1 output, a vivid 1.54-inch TFT display, and a combined 210W output — all for under $100 and within TSA carry-on limits. It is the power bank that made us reconsider whether we even need a portable power station for day trips.

Key Specs at a Glance

• Capacity: 25,000mAh / 90Wh
• Max Single-Port Output: 140W (USB PD 3.1)
• Combined Output: 210W
• Weight: 1.39 lbs
• Ports: 2 USB-C (140W + 60W), 1 USB-A (30W)
• Self-Recharge Time: ~2 hours
• TSA Compliant: Yes (under 100Wh)

Who Is It For?

Business travelers, remote workers, students, and anyone who needs to charge a laptop on the go without carrying a brick-sized power station. The CUKTECH 20 fits in a jacket pocket, charges a MacBook Pro at full speed, and clears airport security without a second glance. It is also ideal for conference attendees, photographers on shoots, and commuters who work on trains and planes. If your power needs fit within 90Wh and you value portability above all else, this is the product to buy.

140W PD 3.1: Real Laptop Charging Speed

Most power banks top out at 65W or 100W USB-C output, which means throttled charging for high-performance laptops. The CUKTECH 20’s primary USB-C port delivers 140W via USB Power Delivery 3.1, matching the maximum charging speed of a MacBook Pro 16-inch, a Dell XPS 15, or a Lenovo ThinkPad X1 Carbon. This is the same wattage you get from the wall adapter that ships with these laptops. In testing, a MacBook Pro 14-inch charged from 20% to 80% in about 45 minutes — essentially the same speed as plugging into a wall outlet. The second USB-C port delivers up to 60W, which is sufficient for a phone or a smaller laptop like a MacBook Air. The USB-A port adds 30W for legacy devices. All three ports can operate simultaneously with intelligent power distribution up to 210W combined.

The 1.54-Inch TFT Smart Display

CUKTECH ditched the row of tiny LEDs that most power banks use to indicate charge level. Instead, the 20 features a 1.54-inch color TFT display that shows real-time input and output wattage, remaining capacity as both a percentage and in mAh, estimated time to empty or full, and individual port status. The information density is impressive without being cluttered. You always know exactly how fast your device is charging and how much power remains. Compared to the Anker Prime 27650, which uses a smaller monochrome display, and the Baseus Blade 2, which relies on LEDs, the CUKTECH 20’s screen is a clear generation ahead. It even shows the current voltage and amperage on each port for the technically curious.

TSA Compliant and Pocketable

At 90Wh, the CUKTECH 20 squeaks under the TSA’s 100Wh carry-on limit, making it one of the most powerful airline-friendly power banks available. The 1.39 lb weight and compact rectangular form factor mean it disappears into a laptop bag or even a large coat pocket. Compare this to the Ugreen Nexode 25000, which offers similar capacity but at a higher price, or the Anker Prime 27650, which exceeds 100Wh and may require airline approval. For frequent flyers, TSA compliance is not optional — it is a requirement that eliminates many otherwise-excellent power banks from consideration.

Two-Hour Self-Recharge

Using a 140W USB-C charger (sold separately), the CUKTECH 20 refills from empty to full in approximately 2 hours. That is fast enough to charge overnight, during a layover, or while working at a cafe. The power bank also supports passthrough charging, so you can charge your devices while the bank itself recharges — though output wattage is reduced during passthrough to manage heat. For solar charging setups, you can connect a USB-C solar panel and trickle charge during the day while simultaneously powering a phone.

What Could Be Better

The 90Wh capacity, while TSA-friendly, limits you to roughly one full charge of a MacBook Pro or about four full charges of an iPhone. For multi-day trips without access to outlets, you will need to recharge the bank itself. The lack of an AC outlet means you cannot power non-USB devices — but that is expected at this form factor. The 140W charger required for the fastest self-recharge speed is not included in the box, and a quality 140W GaN charger adds $40 to $60 to the total cost. Build quality is good but not quite premium — the plastic shell picks up fingerprints and minor scuffs more readily than the aluminum construction of the Anker Prime 27650. The CUKTECH brand is less established in Western markets, which may give some buyers pause about long-term warranty support.

The Bottom Line

The CUKTECH 20 is the best power bank under $100 for laptop users. The 140W PD 3.1 output matches wall-charger speeds, the TFT display provides genuinely useful real-time data, and the 25,000mAh capacity delivers a full laptop charge in a TSA-compliant package. It outperforms the Ugreen Nexode 25000 on display quality and matches the Anker Prime 27650 on output while costing significantly less. If your charging needs fit within 90Wh and you want the fastest possible USB-C output at the lowest possible price, the CUKTECH 20 is the clear winner.