The only negative I've noticed is that it takes veeeery long to charge the power bank itself

I have had it for 4 years already and it still works like new, (it has gotten wet, it has fallen, it has been exposed to the sun for many hours) nothing happens to it

Truly a beast!!!
I had bought it for the army, it took quite a few drops and generally not good handling, and 2 years later it still holds up, gives 4 charges easily!!
The downside is that from the type C port, it only charges the powerbank itself, and you can't use a type c to type c cable to charge your phone, which means for me, since it's also 18w, a basic fast charge these days, sometimes my phone doesn't charge with fast charging

It is truly wonderful, of course at first it may charge the phone slowly but then it charges the phone reliably. The power bank itself charges slowly and that's reasonable. It is really worth buying!!

It is very good for its price, sturdy and well-built. It charges my phone 4+ times fully (xiaomi 12x 4500mA). As for charging, it’s fine, clearly not as fast as the factory charger from the socket which is 67w, but it does its job. The only drawback is that it's a bit like a brick and hard to carry, but otherwise very good, I highly recommend it.

I have bought it for the whole family and as a gift for friends, it is excellent, you never run out of battery.
On trips abroad, it's a must.
Value for money

Good, but one annoying thing it does is that when you have the charging cable just connected to the powerbank for a while but you are not charging any device, and then you connect a device, it doesn't charge it; you have to remove and reinsert the cable into the powerbank

It really charges devices quickly. However, it takes several hours to charge itself and it is very heavy for a power bank.

Unfortunately, it does not charge quickly..... I was very disappointed and bought another product from the same company.
I bought it a while ago but used it during Easter and found that it does not charge quickly..... I don't know what could be wrong.... One of the photos was taken while the phone was connected to this specific Power Bank and the slow charging is clearly visible!!!!!

This is the third one I buy for my circle in less than 3 months.
The first one, in white (I got it myself), was bought a year ago and it has saved me countless times.
With an iPhone Pro Max 16, I definitely get 3-4 full charges.

Perfect, I went through my military service with this, many trips abroad, it never let me down, it took the expected rough handling and it still lives and holds a charge three years later!

very good brand and quality product.

I am very satisfied with this particular powerbank, I use it almost every day to charge my iPhone and the intercom from my motorcycle helmet. I've had it for quite a while, maybe even a year, and it hasn't had any issues. I ordered a second one to have for work. It is indeed a bit heavy, but I keep it in a small bag so it doesn't seem that much to me.

Before it completed 2 years, the battery swelled up inside the house while I had it. I had bought it for the summer for free camping etc. and it didn't last 2 summers. During the winter it had very light use.

It charges even faster than a wall socket. Although it is heavy and difficult to carry, it does its job and more.

It is very heavy and charging is very slow. Additionally, it does not charge iPhones, which for me is a serious drawback. Unfortunately, it turned out to be a useless purchase.

if we exclude the size and its weight (it is quite heavy to carry in a small bag) this particular one "forgets" to discharge

Due to its size and weight, it is by no means portable. Also, to start charging my phone, it is not enough to just connect the cable, but I also have to press the button on the side. There have been times when I connected the cable, didn't check if it started charging, and half an hour later when I had to leave, my phone was still uncharged.
Surely its battery lasts a very long time and provides many charges, but there are more reliable options.

It charges slowly but that's not a problem because its battery never runs out. Its size is ok for its capacity!!