I listen to advice, who can I sue (just kidding, in reality I am posting this review so that there won't be another victim like me and so that people can be aware).
The 18650 battery charger you see exploded right in front of my eyes, among papers, books, newspapers, bam - and everywhere ashes and debris. It didn't just catch fire, like when a candle or paper burns. It was like fireworks, bang-bang-bang everywhere and ashes and debris falling around, which I had to clean off the surfaces they fell on, using 3 different cleaning cloths.
I barely had time to throw it on the floor and extinguish the flames. The battery cover (the round one in the first photo) completely flew off. And, of course, it was a new battery, without any damage, otherwise I would have already thrown it away.
The third photo shows the battery that burned on the tile, "pierced" it, and now it won't come off at all. I turned black and luckily, of course, the circuit breaker tripped, because the grandparents and children were scared by the huge noise it made. And as if all that wasn't enough, it also caught fire on my shirt from the device's exploding blast.
Luckily, I was present when it happened, because all this happened in the room-library of the house, and the books could have caught fire and we would be mourning victims now.
Now, in fact, that the battery has cooled down after ignition, it is stuck ("Golisi" they call it, right?) on the device and won't come off at all. And I had to take them out on the balcony because they were stinking up the place.
Moral lesson: Cheap meat is always eaten by dogs. We are not so rich that we can afford to buy cheap products, as the saying goes.
I particularly like that it says "fire proof case" on the packaging. Yes, we saw it.
Who am I suing, did I say?

In the box and in the manual, it doesn't say anywhere about AA and AAA or NiCd/Ni-MH. On the contrary, the manual on the first page says "Needle 1 only works with rechargeable 3.6V/3.7V lithium-ion batteries. Charging other types of batteries may damage the charger and/or the batteries and cause unnecessary loss." I wanted it for AA and AAA batteries and I thought, well, maybe it can also work with lithium. Surprisingly, though, on their website it says that it supports AA/AAA batteries.
So, what's the truth? I don't have any lithium batteries to test it even on those.
On April 20, 2022, I took the risk of charging a NiCd battery. I charged it with a mobile phone charger (5V 1A) and for 11 hours, the green LED indicating that it had charged didn't turn on. I took it out at night, just to be safe from any potential fire hazards. It wasn't warm, but it was ultimately charged (I measured it with a multimeter)! But how much did it charge? Unknown. So, if you also want the charger for AA and AAA batteries, I would recommend looking for something else. And I will probably do the same.