So, these are devices containing a rechargeable li-ion battery without a charging circuit, meant to be discarded after single use? What's the background story here?
There are similar phone charging devices that use secondary li-ion cells instead of primary alkaline or lithium, marketed as "emergency use".
In my experience, some of the earliest types in this category (12 years ago?) had LED flashlights and a charging circuit (and an amusing quirk where shining a laser at the status LEDs would trigger the flashlight.)
Individual stories of re-using manufactured but unneeded cells from other products probably account for some of this.
In my experience, some of the earliest types in this category (12 years ago?) had LED flashlights and a charging circuit (and an amusing quirk where shining a laser at the status LEDs would trigger the flashlight.)
Individual stories of re-using manufactured but unneeded cells from other products probably account for some of this.