Amazon.com: Duracell DL1616BPK Lithium Coin Battery, 1616 Size, 3V, 55 mAh Capacity (Case of 6) : Health & Household
CR1632 R&D Batteries, Inc. BATTERY, COIN CELL, 1632, LITHIUM, 3V, 137 MAH FOR ZOLL M SERIES : PartsSource : PartsSource - Healthcare Products and Solutions
Amazon.com: Loopacell CR2032 3V Lithium Coin Battery (20 Pack) – High Capacity Button Round Batteries for Watch, Remote – 2032 Flat Circle Cell Button Battery : Health & Household