If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.
Steve: I sent you the following message but because I never saw it come up, here it is again:
Duracell's "Photographic Equipment Battery Guide" says the Leica R6 uses two  MS76 batteries-- each with 1.5 volts--or one DL 1/3N, which is 3 volts.
The MS76 is also known as the EPX 76 by Eveready, V76PX by Varta, SR44 by Toshiba and others. --bob cole