CT scans of 1k lithium-ion batteries show quality risks in inexpensive cells

Seems like a good time to highlight this video from Grin Technologies and their experience with ebikes over the years.

https://www.youtube.com/watch?v=j92Gt4VviSQ

Summary Statement: He summarizes the results of the "sabotaging" attempts by saying, "we just couldn't for the life of ourselves get a nonprotected modern lithium battery to do anything" [02:40:27], in terms of causing a fire. (referring to 18650s)

There are certainly problems out there with cells but it was a surprising statement from someone with a ton of real-world experience. Also they are a very conscientious company so they don't deal with dodgy stuff if they can avoid it.

It's a long video but one takeaway is to only use cells from the top manufacturers: Samsung, Panasonic, LG and Sony. They are amazingly safe.

Molicell?

I have one in 21700 and it seems a great battery so far. Otherwise I'm a Panasonic guy.

I ask because it sits on my forehead, inside a headlamp. Having my hands tied, addressing a problem quickly might be difficult. And them rascals get toasty fast when they ignite.