I was clear. I put exactly that in my first post, in which I said, I don’t buy junky/cheap stuff from certain countries.
However, some brands have earned my confidence through decades of experience. Apple is one. Makita is another.
In my experience, I have never seen a genuine power tool battery catch fire or explode. Milwaukee, Makita, Dewalt, Bosch, etc. very harsh conditions, charged in the heat and sun, in buildings, on generators, etc. Lithium, NICD, NIMH, none.
The only one I every saw close to an issue was in fact an old NIMH Makita battery, but that is becuase the fella threw the battery in his tool bag and touched I think a pair of pliers just right, and sparked........but no smoke no boom.
Evidently, Lithium batteries and water are a no no. I dropped my Milwaukee m18 sawzall in a "pool" once, maybe 5 ft deep.......the battery never worked again, but also did not go boom.
I dropped an M18 battery off of a man lift, maybe 15-20 ft up, direct on concrete..........case was smashed, internals looked mangled.........but it still worked for a bit, then it died, no boom.
I have seen fake knock off Milwaukee tools from China melt. One day I saw A guy with what I knew was a knock off Milwaukee tool.....it was an area light. Said he got it on Ebay for 20 bucks. Using an m18 9.0AH battery, the light melted in the period of about 5 minutes, and destroyed the $250 dollar battery.