Heavy Duty and Super Heavy Duty is the regular zinc-carbon cell. You want longer lasting cells - choose alkaline cells. Even longer lasting, go lithium cells.

Comparing how long zinc-carbon cells last is pointless in my view, but I don't know TS's use case.

edit : Wireless mouse, hair trimmer - use alkaline.

This post has been edited by AbbyCom: Sep 23 2025, 09:08 AM