I found it interesting that Tesla (and others) battery packs were made up of several thousand tiny 18650 flashlight batteries
These are the same batteries (slightly larger than a AA) found in most rechargeable flashlights and many other small electronics. Many are using different batteries now but the same design utilizing thousands of tiny batteries. I think most would assume that there is some sort of new-design high-tech wonder battery in an EV. No, it's just a s h i t ton of flashlight batteries all wired together like you'd make in your garage! Seems like the more electrical connections, the greater the odds of a failure of any given connection.
