Duracell 18500 3.2-Volt Rechargeable Lithium Landscape Lighting Batteries in the Landscape Lighting Batteries department at Lowes.com
18500 li-ion Battery 3.7V 1400Mah ICR18500 Lithium Rechargeable Battery for LED Flashlights 6pcs(They are not 18 * 65mm Size Battery Also not aa Size Battery) : Amazon.ca: Health & Personal Care
18500 Li-Ion Battery 3.7V 2500Mah Li-Ion Cell with 2 Welding Tabs for Led Flashlight,1pieces : Amazon.ca: Tools & Home Improvement