Sind Hg-freie Alkaline-Zellen sinnvoll?

[J. A. (gajk)]

Was ist von quecksilberfreien Alkaline-Zellen (1,5V) zu halten?

https://www.amazon.de/Camelion-12051007-Alkaline-Knopfzellen-Quecksilber/dp/B01CNSR48C/ref=sr_1_1?ie=UTF8&qid=1476623683&sr=8-1&keywords=ag7

Sind Alkaline nicht sowieso quecksilberfrei?

Oder gibt es demnächst auch glutenfreie Batterien, die auch von 
Laktoseintoleranten verwendet werden können?

[Yalu X. (yalu) (Moderator)]

When introduced in the late 1960s, alkaline batteries contained a small
amount of toxic mercury amalgam to control side reactions at the zinc
anode. With mercury content reduced by law and improvements in the
purity and consistency of materials, manufacturers have reduced the
mercury content in modern cells.

...

With the reduction in mercury in 1996, alkaline batteries are allowed to
be disposed of as regular domestic waste in some locations.

(Aus https://en.wikipedia.org/wiki/Alkaline_battery)