| Pros | Cons |
|---|---|
| Supports up to 65W charging | Only one USB-C port supports charging |
| Decent performance | Unstable performance during discharge |
| Functional LED counter | Bulky and fingerprint-prone |
The AsperX Power Bank came into our tests looking solid on paper, 65W output, PPS support, and a clean LED counter. But mid-way through testing, it pulled a move so weird we thought we blacked out. Seriously. Here’s how it fared overall.
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
AsperX Power Bank is a 74Wh, 65W-capable power bank is aimed at mid-tier laptops and larger devices. It supports 7 PDOs, including 15W, 27W, 36W, 45W, and 65W, plus two PPS profiles (3V–11V and 3V–21V at 3A). It holds voltages well, which is great news for device stability. But only one of the two USB-C ports is usable for charging.
The built-in LED counter is straightforward, showing remaining battery and power in/out. It does the job, but don’t expect anything fancy here.
However, it isn’t a small battery. At 408g, it’s heavy for a 74Wh pack. With Wh/g and Wh/cm³ scores both below average, you’re not getting top-tier energy density. The light-colored matte finish looks nice but picks up smudges fast. It’s usable, but not the sleekest choice for travel.
Performance
Now for the weird part. During our full discharge test, the AsperX dropped from 51% to 0% instantly. The screen was on, everything looked normal, then… nothing. Logging stopped. We checked twice. It wasn’t heat-related either as it capped at 45.6°C. Just an odd bug? Maybe.
Charging accuracy wasn’t stellar, with below-average efficiency at just 57%. On the bright side, recharge times were decent, and PPS performance ranked above average. Not great for Apple users, but Android folks might appreciate it.
The best products we tested have efficiency scores around 70%!
Thermals
AsperX managed to stay average in the thermal department. Discharge temps hit 45.6°C, and recharge stayed under 35°C. So while its performance was spotty, at least it didn’t overheat under stress.
Price & Value
At $50, the AsperX isn’t overpriced but considering the mid-pack efficiency and glitchy behavior, it’s not a standout value either. If it ever drops to the $30–35 range, it might be worth picking up for its PPS and 65W support alone.
Verdict
The AsperX Power Bank lands right in the middle. It’s got the right specs, average thermals, and some Android-friendly features. But with inconsistent real-world performance and questionable design choices, we’d only recommend it if it’s on sale and if you’re okay with a little weirdness.
If you want to see what our Top 5 Battery Banks are for 2025, check out this list!