If you refer the Leica M6 battery, the1.5v silver battery is better since the voltage is more stable than alkaline. You have to buy an adaptor to use 1.5V silver battery.
The battery compartment for the SL is for the 625 battery, while the M6 takes the smaller SR44, 357, etc. So I don't think the smaller batteries will make the necessary contacts to work. 625 alkalines (1.5V) will work.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.