If you go to the Apple website for the charger, it will provide the specific wattage for certain phones, but for others it may cause issues

The plugs that go into the socket are very sensitive and break easily. A particular problem for those who travel frequently as you may find the plugs broken.

The product charges the phone in a normal time without heating up. The only thing that did not satisfy me is that it came without a box

After two months of use, the charger burned out and during its use in those two months, it made strange noises while charging, noting that it also reached very high temperatures.

I have the iPhone SE 2020, which I bought in February, so it didn't come with the adapter, only the cable. Until now, I was using my sister's charger, who has the iPhone 7 Plus. It wasn't type-C, so my battery health dropped to 92% in 10 months. I hope with this one it stays stable. I have high expectations because it charges incredibly fast compared to the previous one. This is, moreover, the correct charger for this specific model, which ensures the best battery health. I just took a while to get it.

Device: XS Max
I bought this specific product and it burned out within 2 months. The only positive thing was that it did indeed charge very quickly.

Please make sure if it is genuine or not before opening it, and if it's not, then return it.

Very good but if you had a previous charger of 5w, you cannot use it (18w) because it will deteriorate the battery elements faster. If the previous charger was 10w, then yes, but going from 5w to 18w

2 stars because it burned out after 6 months of use. It burned out last week during the heatwave, presumably due to high temperatures. As for the battery health, I consider it normal wear and tear for it to have dropped 2% in 6 months. Device: iPhone 11

6 months of daily use and no issues. Much faster than the slow one in the package (owner of iPhone 8 plus). It does what it promises

Very good economical and charges the phone quickly (18W) compared to the classic 5W charger! I also bought a second one for the office! It charges the iPhone XR from 0 to over 50-60% in 30 minutes!! You will need to get a USB C to lightning cable as well!! Very good purchase!!

update 11/1/2022
The charger makes a noise while charging the phone (I had it on the 12 and kept it this year on the 13).

On the 12, I hadn't noticed any problem. This year on the 13, when the device charges with this charger, the digitizer gets stuck, but it's fine with another charger.

It was tested with different iPhones and different genuine cables. The charger has a problem

I wonder about the negative reviews of some people.. The phone (iPhone 11) charges almost in half the time than it used to with the 5W charger that came in the package.. Now, whether it causes damage to the battery's health will be shown by time...

Very fast and reliable. The only complaint I have is that it easily comes out of the socket, so I often have to reconnect it when I pull the cable a little harder

Really fast charging when you need a boost on your battery and you only have half an hour. You charge and you're ready without having to think about charging again (iPhone XR)

Very satisfied with the product, no need for recommendations. One note/friendly advice, for those who want to avoid situations, it is extremely important BEFORE opening the package to type in the serial code that is written on the bottom of the packaging on Google to check for authenticity. I say this because in the reviews I saw many people complaining and it seems unfortunately that the products they received were most likely imitations. Anyway, in case you open the packaging and are concerned about the charging rates, you can check the corresponding charts indicating the actual charging times provided by the company.

It excessively heats up the battery. Full charge in 1 hour at most.

5 months later: The phone had a problem due to the charger after being checked by Apple. It may be the fault of the store where it was purchased, but there are definitely small differences in packaging between the genuine and the fake. Be careful not to damage your phone.

Charges iPhones quickly, I don't know what others are saying.
Charges very quickly up to 80% and then slows down for battery safety (aging) health.
Used on XS Max, 12 Pro Max & iPad!
And it's normal for the iPhone to get warm.

Test on iPhone XS with the cable mk0x2zm from 4% battery to 59% in exactly 31 minutes. Incredible charger. Just make sure that the cable is also fast charge.

iPhone 11. It charges incredibly fast, up to 80%. I have just noticed that it overheats the phone excessively.

Owner of the iPhone 11. There is really no reason to buy, the best choice for those who want fast charging is to buy the 12w charger from Apple. Its price is around 15 euros approximately and you don't need another cable because you can use the one you already have! The difference in charging between 12w and 18w is just 15 minutes!

Owner of the iPhone 11, the charger is amazing, it charges the phone very quickly, the only thing you need is a type c to lightning cable which is purchased separately.

As an owner of an iPhone XS, there is really no reason to buy it. Charging from 10% to 100% takes almost 3 hours, which is unacceptable.