Amazon.com: Duracell MN9100/E90/LR1 Medical Battery 1.5 V Card 2 Size N - 2 Count, 2 Pack - 4 Batteries Total,2 Count (Pack of 2) : Health & Household
OmniCel ER341245 3.6V 35Ah Size DD Lithium Standard Battery For Use With Smart card instrument, water meter, electricity meter, gas meter, heat meter, Automatic Meter Reading system
RAYOVAC Heavy Duty D Zinc Chloride Batteries Shrink-Wrapped 1.5V 6-Pack d6 hd-dd | eBay