https://hardware.slashdot.org/story/23/07/27/219206/nyc-wants-unsafe-lithium-ion-e-bike-batteries-to-be-stopped-at-the-border
How does one know before a fire that a battery is well or poorly made?
I thought this was essentially random. Are there tests? Manufacturing standards? Self-diagnostics on the battery or charger?
IIRC, NY and other govs want a UL certification ...they forget that the Chinese will just print one.
Ah, okay. I used to have a login to the UL database, but it expired. I wonder if they have a spec for Li E-Bike batteries. Or for Li batteries in general... and the answer of course is yes
https://www.ul.com/services/battery-safety-testing
I just checked my 18v Ryobi tool batteries and they are UL listed, as are the chargers. A half-dozen of those large-ish batteries continually charging unattended in the garage are a concern.
The other big stock of li-on batteries in the house are Panasonic Eneloop AA & AAAs. The chargers are UL but I can find no indication on the batteries or online that the batteries themselves are UL listed.
Whenever I buy replacement batteries for the robot vacs they are always generic from China. The same goes for the few specialty devices such a small backup power units for electronics.