Power, autonomy, durability.
The batteries have a one (1) year warranty if registered on the official website dewalt.gr (applies to other companies as well).
Powerstack batteries have 3 years, the tools 3 years.
By registering them, you ensure they are genuine and not counterfeit, and you also get access to official resellers. The batteries have the manufacturing date printed on the packaging, which you should ask the seller for before ordering.
All this is purely informative so you don't get scammed, and of course, I have no connection with this particular company!!

DCB184 type 2: Warranty 6 months. It is from 2022. Cells in Korea and pack assembly in China. I liked the charge indicator with 3 LEDs and the release button. Genuine.

It does not compare in duration with the 5Ah and that is reasonable. However, it is lightweight and ideal for using tools in tight spaces

I have not seen a worse battery unfortunately I was disappointed by the de Walt (I use it with the 3 joule digger) not even for amateur use it is suitable

The best thing about these batteries is that they give it their all until they run out. Their performance does not drop at all.

It doesn't last at all and it seems strange to me because I have older ones that last twice as long as this one

I bought 2 from 2 different stores from skroutz, and both tested ones are 90Wh as they claim. It is more than enough, but then the voltage drops below 16V. From what I can see, they don't have characteristics to say that they are fake. If I eventually see that they are, I will update the review.

I use it on a wheel and a folding pole saw. Very good autonomy and size almost the same as the 4ah

Compared to other manufacturers, they have not included a feature to cut off the battery when it is at a low voltage, so you need to be careful. When the tool you are using starts to weaken, immediately change the battery to avoid damaging the cells.

Ideally, you should charge it immediately to have maximum lifespan.

Other than that, they are cheaper than Makita and Milwaukee, which was the reason I bought Dewalt tools.

I have bought 4 batteries for 60€.

The first 2 were manufactured in 2018 and still work great

Great battery life, over a month. I use it as a screwdriver daily and as a drill on inox, and it has an unbelievable low price.