Amazon.com: ML200-6 - 6 Volt 200 AH, Internal Thread (INT) Terminal, Rechargeable SLA AGM Battery : Health & Household
Eveready® Super Heavy-Duty 6-Volt Battery at Menards®
Amazon.com: Duracell 223 6V Lithium Battery, 1 Count Pack, 223 6 Volt High Power Ultra Lithium Battery, Long-Lasting for Video and Photo Cameras, Lighting Equipment, and More : Health & Household