For higher-draw USB-C laptops and multiple devices
USB-C1 is rated up to 140W; USB-C2 and USB-A are lower-rated secondary ports. Verify the laptop’s own accepted PD profiles and any required 5A/EPR cable before expecting the top output.
CUKTECH · United States · laptop
CUKTECH 20 25,000mAh 210W Power Bank review
Exact model: CUKTECH 20 · Revision: U.S. model P23
Product identity · checked 2026-10-07
Manufacturer product image · source
CUKTECH’s 25,000mAh model pairs a 140W USB-C1 output with two additional outputs and a 210W combined ceiling. The manufacturer markets 100W self-recharging, making this a high-output, relatively heavy laptop-class option.
View manufacturer product pageCheck price on Amazon ↗
Availability checked 2026-10-07. Stock can change.
Manufacturer product image · source
- Rated capacity
25000 mAhclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Manufacturer-rated capacity- Single-port output
140 Wclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Strongest wired USB-C output from one port · USB-C1 maximum; 210W is combined output.- USB-C input
100 Wclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Strongest standard single-port USB-C input · Manufacturer’s stated standard USB-C self-recharge rating; the page separately prints a 20V/5.5A profile, whose mode is not established as standard USB-C PD.- Weight
630 gclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Manufacturer-listed product weight · Rounded from the manufacturer’s 1.39 lb bank weight in its included-accessories line.- Combined output
210 Wclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Combined output; not one-port output · Manufacturer’s combined-output maximum.
BatteryRank review
Our verdict
Best suited to users who can use the 140W port and have a compatible USB-C PD 3.1 laptop and cable. For ordinary 65W laptops or light carry, the extra output and roughly 630g body may not earn their space.
Ratings below are manufacturer-claimed. Open a reading to see its source and check date; derived comparisons are identified separately.
Use and carrying fit
Where it fits
What changes the choice
Tradeoffs
The 210W headline spans ports
The strongest individual output is USB-C1 at 140W. The remaining output budget is shared across USB-C2 and USB-A, so the 210W total is not a single-port promise.
Published energy value conflicts
CUKTECH’s page displays both 88Wh and 90Wh in separate capacity statements. We omit watt-hours until the manufacturer resolves that conflict and retain only its unambiguous 25,000mAh label.
Before connecting devices
Ports and charging behavior
A port’s published maximum and the combined multi-port limit are separate ratings. A device can draw less than the bank’s maximum based on its own requirements and the negotiated charging profile.
Recharge through USB-C1
CUKTECH advertises 100W self-recharging on its product page. A separate table lists a 20V/5.5A profile, but the page does not establish that 110W as a standard USB-C PD mode, so we keep the standard-input comparison at the stated 100W.
Documented ports
USB-C1 · USB-C
OEM profiles: 5V/3A · 9V/3A · 12V/3A · 15V/3A · 20V/5A · 28V/5A
CUKTECH 20 Power Bank 25,000mAh 210W — CUKTECH · checked 2026-10-07140 W maxclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Maximum manufacturer rating for this portUSB-C2 · USB-C
OEM profiles: 5V/3A · 9V/3A · 12V/3A · 15V/3A · 20V/3A
CUKTECH 20 Power Bank 25,000mAh 210W — CUKTECH · checked 2026-10-0760 W maxclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Maximum manufacturer rating for this port30 W maxclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Maximum manufacturer rating for this port
Manufacturer documentation
Specifications
Manufacturer claims link to the dated source used for this exact revision. Watt-hours appear only when the OEM states them explicitly; we do not infer energy from milliamp-hours.
- Rated capacity
25000 mAhclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Manufacturer-rated capacity- Strongest single USB-C output
140 Wclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Maximum rating for one wired USB-C port- Combined output ceiling
210 Wclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Combined multi-port maximum; distinct from one-port output- Strongest standard USB-C input
100 Wclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Single standard USB-C input; proprietary dock excluded- Weight
630 gclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Manufacturer-listed product weight- USB-C1
140 W maxclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Maximum manufacturer rating for USB-C- USB-C2
60 W maxclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Maximum manufacturer rating for USB-C- USB-A
30 W maxclaimed. Show source
claimed sourcecuktech.com ↗checked 2026-10-07 · Maximum manufacturer rating for USB-A
Exact-model questions
Frequently asked questions
Does the CUKTECH 20 send 210W to one laptop?
No. The USB-C1 single-port maximum is 140W; 210W is the product’s combined-output rating.
Why is the USB-C input rating shown as 100W?
CUKTECH markets 100W self-recharging. Its table also prints 20V/5.5A, but the product page does not identify the mode that would make that a standard USB-C PD input, so the higher figure is not used in the standard USB-C ranking.
Why is no Wh value shown?
The product page gives conflicting 88Wh and 90Wh figures. We leave Wh unpublished rather than choose between them.
Evidence record
Sources
We use manufacturer documentation for the product identity and claims shown on this review.
- CUKTECH 20 Power Bank 25,000mAh 210W — CUKTECH
Checked 2026-10-07
Review updated 2026-10-07. Ratings are manufacturer claims tied to the cited documents.