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I would define "homemade" as assembling the batteries without any sort of regulation or safety standards. I'd be a bit frightened if I knew someone in my apart

I would define "homemade" as assembling the batteries without any sort of regulation or safety standards. I'd be a bit frightened if I knew someone in my apartment building was assembling their own batteries -- poor quality ones can burn down the building. It's an increasing problem here in San Francisco. I know at least one friend who had to move due to smoke damage caused by a neighbor collecting these batteries. https://sfstandard.com/2024/01/09/san-francisco-e-scooter-bike-battery-fires-legislation/ https://sfstandard.com/2024/01/09/san-francisco-e-scooter-bi...

Gigachad 3y ago
Yeah this is incredibly dangerous. It's not at all like installing a power outlet. You can do that relatively easily and safely. These batteries will catch fire in the middle of the night, burning down apartments and they will kill many people.
- ajsnigrutin 3y ago
  So can store bought: https://www.youtube.com/watch?v=JCaDz_2YcGQ https://www.youtube.com/watch?v=JCaDz_2YcGQ So can galaxy notes, hoverboards, vapes, etc. So can poor electical installations, bridged fuses, cooking oil fires, etc. These packs (18650 based) are a lot safer than "baggied" packs found in many fpv drones and RC cars, and those packs are factory assembled. Firewise, i'm more afraid of an alcoholic with a cigarette, than of batteries.
_carbyau_ 3y ago
What I find concerning is most people here would have seen expanded seams on a phone or laptop and known about the "puffy" battery within. The rate of proliferation of gadgets with such batteries is crazy. So much of society already has so many of these little flashpoints in phones, tablets, toothbrushes, kids toys (electric scooter anyone?) - statistically your concerns are already valid without anyone being an electronics hobbyist.
ajsnigrutin 3y ago
So, compare the number of battery fires to eg. gas explosions, cigarette fires, oil fires due to cooking, etc. Doing anything with mains power, water pipes and gas pipes is still done by many people themselves, and the risk is minimal. Also most of the battery fires happened with factory installed batteries, be it in vapes, galaxy notes, or other devices. Also: https://www.youtube.com/watch?v=JCaDz_2YcGQ https://www.youtube.com/watch?v=JCaDz_2YcGQ

Gigachad 3y ago

Yeah this is incredibly dangerous. It's not at all like installing a power outlet. You can do that relatively easily and safely. These batteries will catch fire in the middle of the night, burning down apartments and they will kill many people.

ajsnigrutin 3y ago
So can store bought: https://www.youtube.com/watch?v=JCaDz_2YcGQ https://www.youtube.com/watch?v=JCaDz_2YcGQ So can galaxy notes, hoverboards, vapes, etc. So can poor electical installations, bridged fuses, cooking oil fires, etc. These packs (18650 based) are a lot safer than "baggied" packs found in many fpv drones and RC cars, and those packs are factory assembled. Firewise, i'm more afraid of an alcoholic with a cigarette, than of batteries.

_carbyau_ 3y ago

What I find concerning is most people here would have seen expanded seams on a phone or laptop and known about the "puffy" battery within. The rate of proliferation of gadgets with such batteries is crazy. So much of society already has so many of these little flashpoints in phones, tablets, toothbrushes, kids toys (electric scooter anyone?) - statistically your concerns are already valid without anyone being an electronics hobbyist.

ajsnigrutin 3y ago

So, compare the number of battery fires to eg. gas explosions, cigarette fires, oil fires due to cooking, etc. Doing anything with mains power, water pipes and gas pipes is still done by many people themselves, and the risk is minimal. Also most of the battery fires happened with factory installed batteries, be it in vapes, galaxy notes, or other devices. Also: https://www.youtube.com/watch?v=JCaDz_2YcGQ https://www.youtube.com/watch?v=JCaDz_2YcGQ