EDIT: I should add (for the text you will read) that I also bought the Xiaomi 10k mAh 33watt, and again the indication changed to "mi turbo charge," although as I mentioned in the text below, some told me that since my phone charges with a max of 120 watts, it might change the charging indication at higher watts (e.g., 50-60-70-80, etc.). In the end, that is not the case. Even at 33 watts, the charging indication changes.

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Here follows a lengthy analysis. For those concerned about finding a power bank that delivers the max watts it claims. (-1 star because it seems that not everything always comes perfect. My first one arrived defective, as I have seen in many other comments. However, the second one I received is perfectly fine 5/5 stars)

I have the Xiaomi 13t pro phone, which charges at 120 watts from its charger. Being the owner of the Xiaomi power bank 20kMah 18watt, I wanted to upgrade because with 18 watts, the phone took 2.5 hours to charge from 0-100.

Initially, I ordered this specific power bank (on which I am writing the review), but it arrived defective, in the sense that it did not charge properly; after the 3 lights, it never charged the 4th, it kept blinking. I returned it and decided to experiment with another brand.

Next, I got the Baseus 20kMah 30watt, but when I connected it to my two devices, the 13t pro phone and Xiaomi Pad 6 (from the type C port that delivers the max watts and with cables from the same company 65+watt, as well as one device separately each time - I noticed everything), the indication was simply the typical "fast charging." Since I assumed that to move to the next category, the indication (e.g., turbo charge or something different from the 18 watt power bank indication anyway) would change, I decided to conduct an experiment. I charged my devices from 50% to 75% with my 18watt charger and timed it. Then, for the same battery percentage (50% - 75%), I charged my devices with the Baseus 30watt and timed it again. The time was exactly the same with a deviation of 30 seconds. So I was sure that the Baseus was not delivering 30 watts but 18 watts (during the entire "experiment," I did not use the devices at all). So either the power bank was defective, or it simply did not cooperate properly with the Xiaomi devices I had. I returned it.

Next, I bought the Samsung 45watt power bank, which had 3 type C ports only, and I assumed that its purpose was to deliver only high watts (unlike other power banks, for example, that have USB ports to deliver low watts and type C ports to deliver the high ones it promises). I did the EXACT same experiment again (this time only on my Xiaomi 13t pro phone). The indication was exactly the same, "Fast charging," no difference. The charging times were the same as with the 18 watt power bank. I returned it.

At this point, I start to get frustrated and think that I need to talk to someone specialized to explain to me what is happening.

I called the official Xiaomi representative and explained exactly the problem I had. In detail, the "experiments" I conducted and generally the whole process with the different power banks I tried. They told me to make a small change in the charging settings, but in the end, nothing changed (I still hadn't returned the Samsung 45watt, and so I realized that nothing changed). I asked them, "How can I be sure BEFORE I buy the power bank that it will deliver the watts it claims? "or at least close to that." Someone told me something that might be true, that for the indicator to go to the next level (i.e., instead of 'fast charging' to display some other indication when you connect it), the charger needs to be a certain wattage and above. For example, at 30 watts, the indication might not change.

As a final step, I called 2-3 separate stores like Public (where they were also relatively clueless about this specific issue to give me an answer to 'how can I be sure that I will receive the watts that the power bank claims to provide') and I finally found a very helpful person in another store's technical support, with whom I spoke for 40 minutes and he explained everything in detail. Fast forward, the companies of power banks do not all have the same compatibility with each other. Up to 18 watts, they all provide it if they can supply 18 watts or more. For higher wattages, even if it states that they provide them, many factors play a role in whether your device will receive the max wattage that the power bank guarantees (explaining to me that it doesn't mean that if it doesn't provide those watts, the device is necessarily defective). And he explained to me that the best solution to have a higher chance of your device receiving the max wattage of the respective power bank is to get a power bank from the SAME COMPANY as your device.

Finally, although this specific power bank (Xiaomi 20kmah 50watt) had turned out defective the first time and had been put on a sort of blacklist, I decided to buy it again to see if a non-defective one would provide the watts it claims (when I first bought it, I didn't even check to charge my phone with it, as it was defective and I returned it immediately, and my mind put it on a blacklist).

Now this power bank came to me perfect, charging with an indication of 55 watts (even though the power bank says it is 50 watts), it charges perfectly from the wall, reaching 4 dots and stopping blinking afterward.

I should mention here that -without wanting to advertise- all three times, Skroutz refunded me for the power banks without forcing me to send it first to the technical support of each store, to check it, which would take a couple of weeks, and then I would want another 2 weeks - if they were willing - to return my money. I mention this because in 2 stores I asked (in case I bought from their site and Skroutz wasn't involved somehow) they told me that if it is paid for and I open it, then the process is -if I identify a fault- exactly what I said above, meaning I have to send it to their technicians first, then they decide IF it is defective and then a refund or replacement. A lengthy process.

Ultimately, I should add, my phone that accepts 120 watts from the wall, at 55 watts changed the charging indication as I said (and as you can see in the photo). I mention this in case someone tells you (as some technicians told me this - and it probably doesn't hold absolutely) that this specific phone, since it has a max of 120 watts, will then change the charging indication at, for example, 66 or 80 or 90 watts and not at 30, 40, or 50. This does not apply to me for the Xiaomi 13T Pro.

Thank you very much to those who read this to the end, I truly hope I helped those looking for fast charging power banks and finding a wall with various ones they have tried, while these guarantee a lot of watts."

It does what it promises. Anyone who has a problem with the product and writes 1-star reviews either doesn't know how to take care of items or doesn't understand basic physics. Its capacity is 20,000 mAh measured at a voltage of 3.7 Volts. The 3.7V is the average voltage of a smartphone battery, so if your smartphone's capacity is, for example, 5,000 mAh, then it will indeed give you around 4 charges. If you try it on devices with higher voltages, obviously it won't provide as many charges as the capacity of your battery at 20,000. Also, if you have left it in a place at 39 degrees or you are outside in 2 degrees and it stops working or charges little, don't be shocked. Lithium-ion batteries are like that, and your phone will experience the same in very cold conditions. Additionally, 50W is obviously only output by the USB-C port ALONE, while the USB-A outputs a max of 20 Watts. Anyone expecting to plug headphones into one port, a tablet into another, and expect the USB-C to also provide fast charging for the phone, should forget it. Watts do not come as a gift from the beyond; more devices = less power for each device, simple as that. Finally, check what voltage your device accepts. This is what will ultimately determine at what voltage and current, thus also power, the power bank will charge (secret: Power in watts = Voltage in V times Current in A)

Amazing for my use.
Yes, it is heavy, like a brick, but that's why they call it a charging brick.
Its purpose is to charge the drone batteries when I'm out flying, which is usually outside the city and without power anywhere. I can have multiple charges and the most important thing... the faster the charge, the better.

50w... Many good reviews... let's see.

After 1 week. I am absolutely satisfied.
It charges almost like the 65w at home and I can always have a charged battery.
When I fly the drone, I charge the battery that just drained and by the time the other one is finished, it has already reached 3 lights. (usb-c to usb-c)
And apparently, for the whole day.
It charges 3 batteries from the drone and one for the action camera and still had 3 lights left.
It made me wonder if we went overboard for my use?
I thought, maybe I’ll sit and fly more. 20000mAh... guaranteed.
It charges the same as a 65w very quickly. When I bought it, it already had a bit inside and I did about 3:30 hours. I don’t know it from zero, but one light that I usually burn, no problem, just fine.
And that's why I don't mind the weight because I know I'll have power... and more.
In the end, if you want many and fast charges, it's worth the money.
And for me, the time I save and the comfort of knowing I’ll have many charges is worth more than the 50 bucks