Anker Prime 27650 mAh Vs. UGREEN 25k 145W

Anker Prime 27650 mAh Vs. UGREEN 25k 145W – A Comprehensive Comparison

In this review, we’ll dive into the world of portable power banks, comparing two heavyweights: the Anker Prime 27650 mAh Vs. UGREEN 25k 145W Power Bank. These power banks come with big promises, but can they deliver on their claims?

We’ll be rigorously testing their performance, examining their modes of operation, energy storage capacity, and much more in this comprehensive review. Check out the latest prices here:  Anker Prime Power Bank. and UGREEN 145W 25K.

UGREEN Power Bank – Unveiling the Challenger:

First up, let’s take a closer look at the UGREEN 145W Power Bank (Model: 90597A). This power bank has generated significant anticipation and is finally making its debut on our website.

It boasts both Power Delivery and Quick Charge capabilities across three ports, offering voltage outputs of 5V, 9V, 12V, 15V, and 20V on the USB-C port, and 5V, 9V, and 12V on the USB-A port. However, it doesn’t support PPS (Programmable Power Supply) modes, limiting its compatibility with certain devices.

Performance Analysis:

The UGREEN power bank can deliver up to 145 watts of power, but our tests revealed that it struggles to maintain this level for an extended period. It reached only 70% of its rated capacity before shutting down, with the 100-watt port being the first to give in.

Surprisingly, the UGREEN power bank exhibited slower charging speeds, topping out at 60 watts, considering its high power output capabilities.

While it did charge moderately quickly, taking 1 hour and 42 minutes to reach a full charge, the power meter displayed inaccurate information, showing 100% well before the charging process was complete.

Efficiency-wise, it lost 21% of power at 50 watts output, placing it in the middle of the pack in terms of efficiency. Check out the latest prices here:  Anker Prime Power Bank. and UGREEN 145W 25K.

Anker Power Bank – The Heavyweight Champion:

Now, let’s shift our focus to the Anker 250W Mega Ultra Power Bank. Anker has a reputation for quality and innovation in the power bank market. This model offers versatile voltage outputs, including 5V, 9V, 12V, 15V, 20V, and even 28V on the USB-C port, as well as 5V, 9V, and 12V on the USB-A port. It also supports PPS mode, enabling fast charging for compatible devices.

Performance Analysis:

The Anker power bank boasts impressive charging capabilities. It can maintain a 140-watt output for the majority of its charge cycle, allowing for rapid device charging.

Like the UGREEN power bank, the Anker also suffers from an inaccurate power meter display, showing 100% well before the charging process is actually complete.

Anker provides Bluetooth connectivity and app support, although privacy-conscious users may have reservations about using these features.

Efficiency-wise, the Anker power bank stands out, with only a 19% power loss when converting energy from the wall to portable power.

Comparing Density and Size:

Both power banks exhibit differences in terms of size and weight. The UGREEN power bank weighs in at 506 grams, while the Anker is bulkier at 663 grams. However, the Anker’s larger size accommodates its larger battery capacity.

Power Density Analysis:

The power density chart reveals that both power banks are among the top performers, offering high energy and power densities. This means they can charge and discharge quickly, making them ideal for users who need rapid power delivery.
Battery Density Analysis:

In terms of battery density, both power banks offer good energy storage relative to their size and weight. This means they can store a considerable amount of energy in a relatively compact form factor.
Other Considerations:

Both power banks come with unique features, such as a low-power mode that allows for extended charging of low-power devices. Additionally, they can charge slowly even with a basic 5W USB-A charger.

Furthermore, the UGREEN power bank exhibits limited uninterruptible power supply (UPS) capabilities, allowing the USB-C port to continue functioning during power outages. However, it’s worth noting that it can still deplete itself if not managed properly. The Anker power bank, on the other hand, doesn’t offer UPS functionality.

Thermal Performance:

Both power banks exhibited reasonable thermal performance, getting warm during use but not excessively hot. However, the UGREEN power bank developed some hot spots during high-output use. Check out the latest prices here:  Anker Prime Power Bank. and UGREEN 145W 25K.

Anker Prime 250W 27650 mAh VS. UGREEN 25k 145W ”Pros and Cons”:

UGREEN 145W Power Bank:


  • Power Delivery and Quick Charge capabilities on three ports.
  • Specific port for 100-watt output.
  • UPS functionality for continued operation during power outages.
  • Friendly form factor for easy portability.
  • Reasonable efficiency for its category.


  • Struggles to deliver claimed 145 watts continuously.
  • Limited PPS support may not be compatible with some devices.
  • Inaccurate power meter display during charging.
  • Slower charging speeds compared to its power output capabilities.
  • Overheating issues during high-output use. Check out the latest price here: UGREEN 145W 25K.

Anker 250W Mega Ultra Power Bank:


  • Impressive charging capabilities, especially in 140W mode.
  • Versatile voltage outputs, including PPS support for fast charging.
  • Bluetooth connectivity and app support for advanced monitoring (privacy concerns for some users).
  • Excellent efficiency, minimizing energy loss during charging and discharging.
  • Can operate at higher power outputs for longer durations.


  • Expensive, making it a premium option.
  • Inaccurate power meter display during charging.
  • Bulkier and heavier than some competitors.
  • May not be fully utilized by all users, as it exceeds the needs of most devices. Check out the latest price of Anker Prime Power Bank.

How to Choose:

  1. Usage Requirements: Consider your specific needs. Are you looking for a power bank for casual use, travel, or to support power-hungry devices like laptops or gaming consoles?
  2. Power Output Needs: Evaluate the devices you intend to charge. If you have high-powered devices, the Anker’s higher wattage output may be beneficial. For more general charging needs, the UGREEN might suffice.
  3. Portability: If portability is a priority, the UGREEN’s more compact form factor might be a better fit. It’s more travel-friendly and can function as a UPS during emergencies.
  4. Budget Considerations: Determine your budget and willingness to invest. The Anker is a premium option and comes with a higher price tag. If you’re on a tighter budget, the UGREEN might be a more reasonable choice.
  5. Privacy Concerns: If you’re cautious about privacy, consider the implications of the Anker’s Bluetooth connectivity and app support. It may not be suitable for users who are wary of data security.
  6. Efficiency vs. Speed: Decide whether you prioritize efficiency (less energy loss) or speed (fast charging and discharging). The Anker excels in efficiency, while the UGREEN offers UPS capabilities and portability.
  7. Device Compatibility: Verify that the power bank you choose is compatible with your devices. Check for specific requirements like PPS support if you have fast-charging devices.
  8. Future-Proofing: Consider your potential future needs. If you anticipate acquiring higher-powered devices, investing in a power bank with higher wattage output, like the Anker, may be beneficial.

Remember, there is no one-size-fits-all solution. It ultimately depends on your specific use case and preferences. Both power banks offer competent performance, so you can’t go wrong with either choice.


In summary, both the UGREEN and Anker power banks have their strengths and weaknesses. The UGREEN power bank offers a friendly form factor and UPS capabilities, but it falls short of delivering its claimed 145 watts continuously. The Anker power bank, while more expensive, boasts impressive charging and discharging speeds, as well as better efficiency.

Ultimately, your choice between these power banks will depend on your specific needs. If you value speed and efficiency and are willing to invest in a premium product, the Anker 250W Mega Ultra Power Bank may be the better option.

However, if you prioritize portability and UPS functionality, the UGREEN 145W Power Bank is a viable choice. Both power banks offer competent performance, making them valuable additions to your portable power arsenal. Check out the latest prices here: Anker Prime Power Bank. and UGREEN 145W 25K.


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Abdel Editor at I've been writing about the tech industry for many years and my favorite topics to cover include Big Tech, media, and gaming.