Rechargeables or something? I don't think I've ever had a (discrete batteries always though) logitech keyboard or mouse stop working ... I've mislaid or moved&discarded and that's it!
Both kinds of batteries. The rechargeable battery one no longer recharged. The others buttons stopped working mechanically.
I think the logitech MX mouse are really good, in fact, I buy refurbished or second hand and they still last years of ruff use. Although, they are quite expensive and I have heard some people don’t like the shape ( shocking for me as that was the only reason I bought one in the first place)
That's odd. I've been using my Mx vertical for almost 5 years already, literally every day.