Amazon.com: AmVolt- Pack of 12 CR2032 Batteries, 220mAh 3 Volt Lithium Battery, Long Lasting Coin Cell 2032 Batteries for Small Electronic Devices : Health & Household
Panasonic CR2032 Lithium Coin Cell Batteries (10-pack) PCR2032P/10W - The Home Depot
Coin cell battery emulator CR2016/CR2032 from Bobricius on Tindie