vhbw Battery compatible with Minox DC 5211 Camera DSLR (1000mAh, 3.6V, Li-Ion): Amazon.co.uk: Electronics & Photo
Minox DCC 5.0 DCC 5.1 Digital Black Camera 900mAh Replacement Battery: BatteryClerk.com Camera
Amazon.com : Minox Power Pack Kit for 35mm Cameras, converts from PX27 to LR44 Batteries : Digital Camera Batteries : Electronics
Found a Minox 35 GT in super good condition (just needs a good clean). I adapted the battery compartment to use 4 LR44 cells, that are about the same size of the