Batteries are rated for a certain continuous current draw, and if you try drawing too much, you're going to have a bad time. Some of these flashlights can draw a ridiculous amount of power, and if you're putting a cheap knockoff 18650 in it with no internal protections, it's not going to be a fun time.

It's the same issue people had with vapes exploding. The original included batteries might only be rated for a continuous draw of say, 10A, and they're adding these crazy high wattage coils trying to get 30A from them.

[–] AI_toothbrush@lemmy.zip 17 points 11 months ago

Yeah but charging is even more dangerous. These lights dont have built in chargers so you need to charge the batteries yourself.

[–] Infynis@midwest.social 11 points 11 months ago (2 children)

Have you been licking 9 volts?

[–] FlyingSquid@lemmy.world 9 points 11 months ago

Like you haven't.

[–] Furball@sh.itjust.works 7 points 11 months ago

Everyone knows you shouldn’t lick more than 8