Consider why trashcans are equipped for battery disposal in a given context. These sorts of trashcans are sprinkled (seemingly) randomly throughout Chongqing – certain public squares, the airport, etc. Is this calculated inconsistency, or are certain contexts more recognized users of disposable batteries than others.
Incidentally, I’ve never seen a waste collector (formal or informal) check this battery disposal element – nor is it obvious how to access it.
On an unrelated note, expended disposable batteries are becoming a widespread and pernicious waste in rural Myanmar – intriguing to see something that rural dwellers have not yet figured out how to repurpose, and consider how/whether they will be able to.