CUKTECH No.30 Ultra Review: A 300W Desktop Charging Station Worth It?

If your desk is buried under a pile of wall warts, the CUKTECH No.30 Ultra desktop charging station makes a strong case for itself. It packs five output ports, a 300W DC jack that can genuinely feed a high-performance gaming laptop, and a 1.83-inch color display that shows what every port is doing in real time. One caveat up front: this much hardware is overkill if you only charge a phone and a thin-and-light laptop.

Design and the Little Screen That Earns Its Keep

The No.30 Ultra goes with a two-tone black-and-silver look, and the magnetic stand lets you angle it however you like — flat, upright, anywhere on the desk. It reads as understated rather than flashy, which is exactly what you want from something that sits out in the open.

The 1.83-inch display is the part you end up actually using. It shows total output, per-port wattage, the active charging protocol, and temperature at a glance. There's also a temperature-protection status screen, so you can see the station is running cool without plugging in a thermal camera. A single textured Mode switch handles the controls — easy to find by feel, no menu diving.

Five Ports, One 300W Budget

You get 1 DC jack, 3 USB-C ports, and 1 USB-A. On paper: the DC round jack outputs up to 300W (20V/15A), USB-C1 and C2 hit 140W each over PD 3.1, C3 does 44W, and USB-A manages 22.5W. Protocols cover PD 3.1, PPS, and Xiaomi's private fast charging.

Here's the part worth understanding before you buy. The 300W is the total budget for the whole unit, not 300W for the DC jack plus another slice for USB. If a gaming laptop is already drawing 250W from the DC port, the remaining ports share roughly 50W. And hitting the full 140W on C1 or C2 requires an EPR-capable cable and device.

The upside: when multiple devices are connected, the station splits power intelligently, so your phone and laptop charge together without fighting over watts.

What Independent Tests Show

Third-party multi-port tests recorded strong simultaneous output — for example, roughly 132W and 95W on C1 and C2 together, with C3 and USB-A still delivering usable power when all four were loaded. That's real multi-device capability, not just spec-sheet math. Keep in mind the split shifts depending on connection order and what each device actually requests.

The DC port is the headline feature for gaming laptop owners. In one reported test, a Lenovo Legion R7000P in performance mode ran a sustained dual stress test on about 220W from the DC port — close to what the stock brick delivers. That suggests it can genuinely replace some laptop power adapters, though compatibility isn't guaranteed:

1. The laptop must support the matching voltage, wattage, and connector.

2. Some brands use proprietary handshake protocols — same plug shape doesn't mean it will work.

3. 330W-and-up gaming laptops may not run at full power from a 300W source.

4. Always verify polarity, pinout, and compatibility before using any third-party adapter tip.

Thermals look reasonable at everyday loads: a sustained 140W output for an hour peaked around 49.6–52.2°C depending on input voltage, though another high-load test logged 71°C under different conditions. Near full 300W, expect the body to get noticeably warm. Conversion efficiency at high-voltage stages measured around 92–93%, which helps explain how so much output fits in a body of roughly 636–650g. If you plan to run a laptop at full tilt for hours, keep the vents exposed — no thick desk mats or closed drawers.

Editor's Notes & Summary

The CUKTECH No.30 Ultra is a rare desktop charger whose specs hold up in independent testing: real 300W-class DC output, dual 140W USB-C ports, smart power sharing, and a display that's genuinely informative rather than decorative. At a reference price of ¥649 (roughly $90), it makes the most sense for people running a gaming laptop, MacBook Pro, phone, and tablet off one desk. If that's not you, it's more station than you need — and it would still tidy up a surprising number of adapters either way.

Key specifications (CUKTECH No.30 Ultra, TA3005U):

Note: port ratings above reference the China/Taiwan versions; overseas units may differ, especially on C3 and USB-A.