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UL is also not the be all and end all. You can build a UL certified pack with pretty shit cells. The most important aspect of a good battery is just use good qu
by Panzer04 2y ago
UL is also not the be all and end all. You can build a UL certified pack with pretty shit cells. The most important aspect of a good battery is just use good quality cells that don't blow up.
LG produced a bad batch a few years ago and caused a bunch of fires, while other batteries in the same circumstance were perfectly fine.
- 0_____0 2y agoCell quality is one thing, but it is also possible and necessary to ensure that cell failures do not cause a thermal cascade that causes adjacent cells to fail. The whole "pack caught fire because of one cell" thing is optional. Ideally a catastrophic cell failure results in some venting of gas and a bunch of blown fuses at the cell interconnect level.
- HPsquared 2y agoThe level of increased risk depends on how many cells are in the battery. A large battery will need to be well-protected against cascading thermal runaway, but a battery with 2 or 3 cells there isn't much difference.