Hello everyone!

After posting some Input and Output Comparisons almost a month ago, I got the chance to write a detailed review for a German Tech Outlet called "Smartzone".

You can find my full review here -> Link

The review is of course in German, but can naturally be quickly translated into the language of your choice with today's tools. I have tried to appeal to both casuals and professionals in the review and hope that you can take something interesting and informative away from it.

If there is something specific missing or not answered, feel free to leave a comment and I try my best to answer it.

Here is my tl;dr: Excellent Powerbanks and easily Top 3 in its field. Fantastic net capacity, high sustained performance, quick input, good App-Support, really nice weight and size for the power etc. It only has two issues:

1: The price - it's just really, really expensive.
2: it should be the best with that price tag, but that's sadly not the case. The older Anker Prime 250W model is still better. Despite the lower numbers it charges even quicker and can sustain highest output even longer. The 300W model makes a fair trade off: it's lighter and slimmer as the 250W one, but not quite as powerful, gets hotter and throttles quicker in comparison to the old model. Check the comparisons I posted above! If you really want the best of the best, grab the old model. But if you also value less size and less weight and also don't mind the high price tag, you can not go wrong with the new model. Choice is up to you. Check your use case first!
(2.5: The old 250W one had SuperVOOC (for OnePlus, Oppo, Realme) with up to 65W on the USB-A, the 300W does not support SuperVOOC anymore).

You can find all the collected data from this review and much more (Powerbanks, Chargers, Charging Times, etc) in my Google Sheet

I post new reviews, deals and other stuff related to Charging in my Sub called Charging Sheet

I received my new Anker Prime 300W Powerbank today thanks to Amazon.de getting it early. After my first discharge, I cooled the Powerbank to room temperature (20°C) and did my first charge with 200W (2x 100W). I heard from US people, that 200W is the sweet spot, since with 250W Input you get more charge in around 15 minutes, but it throttles way quicker. I will test that the next days. But for now, here are my results in comparison to the older 250W Prime with 170W Dual Input:

Input comparison: Anker Prime 250W Powerbank (2023) vs Anker Prime 300W Powerbank (2025) (Both have 99Wh)

Anker Prime 250W (A1340) with 170W Input

After 10 minutes: 31%, 29°C
After 20 minutes: 60%, 34°C
After 30 minutes: 90%, 38°C
After 34 minutes: 100% (according to the screen, still charges with 170W), 40°C
After 40 minutes: 100% (according to the screen, still charges with 80W,) 41°C
After 48 minutes: 100% fully charged, no wattage goes in, 38°C

Notes:

• Starts with 140W and builds up to 170W over time

• No throttling at all

• Slowly goes down in Charging speed after 35 minutes from 170W

• After 38 minutes port 2 is deactivated, port 1 still charges with 80W

• Slowly goes down in Charging speed after 40 minutes from 80W
  

Anker Prime 300W (A110A) with 200W Input

After 10 minutes: 33%, 34°C
After 20 minutes: 61%, 41°C
After 30 minutes: 74%, 40°C
After 40 minutes: 85%, 38°C
After 50 minutes: 95%, 37°C
After 59 minutes: 100% (according to the screen, still charges with 10W), 35°C
After 63 minutes: 100% fully charged, no wattage goes in, 34°C

Notes:

• Starts with 200W right away

• Throttles to 165W Input after 18 minutes, 56% of charge and 41°C

• Throttles to 80W Input after 21 minutes, 63% of charge and 41°C

• Slowly goes down in Charging speed after 45 minutes from 80W

• After 47 minutes port 2 is deactivated, port 1 still charges with 50W
  

Update: 140W Input:

After 15 minutes: 34%, 28°C
After 30 minutes: 66%, 37°C
After 45 minutes: 95%, 38°C
After 53 minutes: 100% (according to the screen, still charges with 15W), 36°C
After 60 minutes: 100% fully charged, no wattage goes in, 35°C

Notes:

• Starts with 140W right away

• Slowly goes down in Charging speed after 40 minutes from 140W
  

Yes, the Powerbank actually charges faster with 140W! 200W (and 250W most likely) are only useful for short burst charges, but not for a full charge!

Keep in mind, battery percentage is always off on the older 250W. It does not match the actual capacity, therefore it also charges beyond 100%. No way to prevent it, just how the model works.

The battery percentage of the 300W one is perfectly accurate.

The old model charges faster despite the slower input on paper and can sustain it's max charging speed of 170W because the heat management is much better. That was expected, since it's also a good chunk thicker.
Check this quick comparison for size: https://ibb.co/VpB7MRqq

The new model heats up much quicker and therefore throttles to 80W eventually and holds that wattage for the remaining charge.

Both models charge very quick, without a question. The old model is just better in this regard and also cheaper - in comparison to the new model. For the really high price you expect better.

A full review with all data and specs (discharge tests, more input tests, etc). will follow on my home sub, https://www.reddit.com/r/ChargingSheet/ - but I will post an English version of that shortly after.

Feel free to ask questions.

Im wondering, does this power bank use silicon carbon batteries? The body profile is much smaller than my Anker 737 or Cuktech 20. The packaging and unboxing for this are really nice.