Electronics Plus - Hard to find parts and accessories, available and ready to ship!
Amazon.com: AMX3d Coin Cell CR2032 Battery Holders with Switch – Lilypad and Jewel LED Compatible - Save Batteries, Switch Off LEDs–Ideal for Schools & Large Projects, Pack of 10 : Office Products
CR2335 R&D Batteries, Inc. BATTERY, COIN CELL, 2335, LITHIUM, 3V, 300 MAH : PartsSource : PartsSource - Healthcare Products and Solutions