| Pros | Cons |
|---|---|
| 140W EPR charging support | Below than average performance |
| Has freebies | Annoying wake screen animation |
| Smart screen with status info | Heavy |
| Cool discharge temps |
We had high hopes for the updated Ugreen 140W Power Bank. Its predecessor topped our list last year, but this year’s model comes in at a modest #8. That’s not to say it’s bad, it’s just not great.
Looking for power banks that actually perform? Check out our Top 5!
How We Test
We’re reviewers, not influencers. What does that mean? It means we test everything our way before we share the results. None of the content we produce is sponsored so you don’t have to wonder if we’re just trying to sell you something.
For battery banks in 2025, here’s what what we tested:
- Charging protocols – We did timed charge tests for every protocol that the battery bank claimed. For example, a battery bank might advertise PDO’s of 15W, 27W and 60W. We would run voltage stability tests for each rate. We do the same for PPS as well.
- Temperature – We captured the temperature of the battery bank for all the charge tests and noted any overheating, throttling or failure to maintain the chosen output.
- Capacity test – We fully charged and discharged each battery bank using a PD controller and an e-load. This method pushes the battery harder than normal use, revealing when it fails to maintain proper output instead of just dropping to a lower voltage.
- Recharge tests – We measure and timed the amount of energy required to fill the battery bank completely. We didn’t rely on the counters on the packs, instead we had hard cutoffs coded into our test programs
- Efficiency – From our charge/discharge tests, we calculated several efficiency values to see how much usable energy you get compared to how much went in.
Design
Ugreen 140W is a big bank. It packs a 25,000mAh (90Wh) capacity, which is the max size allowed on most airplanes. You get two USB-C ports which are both capable of charging and discharging. One supports up to 140W, and the other 100W. BUT the max total wattage isn’t 240W, it’s only 200W. We will mention that we’re glad they didn’t try to pull a marketing unicorn by summing outputs like some other brands do.
The pack includes a smart LED screen, but it insists on showing a cheesy robot animation every time you press the button. Physically, it’s solid, long and thick with rubber feet so it doesn’t roll around like its Anker rival.
Performance
In real-world capacity tests, we pulled 61.55Wh out of the stated 90Wh. That’s not bad but not spectacular. Voltage stability for PDOs was mid-tier, and the PPS stability score was toward the bottom of the pack at 73% (average is around 71%).
The best products we tested have efficiency scores around 70%!
One oddity: every time we pressed the wake button during testing, our meters would reset. Weird behavior, especially from a brand as established as Ugreen.
The bank did quit early during one of our high-drain tests, cutting out at 10% which was likely a thermal fallback. Most other packs handled this test fine, so that was a ding on its reliability.
Thermals
Interestingly, the Ugreen ran cooler during discharge (41.3°C) and slightly warmer during recharge (35.5°C). Still, no major thermal issues, and it ranked 3rd best in this category.
Value
At $80, this is not a bad deal especially for a pack that supports EPR charging up to 140W. It also comes with a pouch and cables. But when you stack it up against the rest of the test group, its efficiency and PPS accuracy just don’t hold up. For this price point, there are better all-around options unless you really need that high-wattage output.
Verdict
The Ugreen 140W 25,000mAh Power Bank looks like a beast on paper, but in practice, it’s just okay. It’s functional, well-built, and decently priced, but the performance doesn’t quite match the promise. If you need 140W output, this might still be worth grabbing. Otherwise, consider one of the higher-ranked options in our Top 5 list.