4 Pack 3.7 V 18650 Rechargeable Battery Flat Top with Charger, 18650 Lithium-Ion
It Has A Recyclable Life Of Up To 1200+ Tech. Smooth And Durable Stainless Steel Rails For Cell Lengths From 34 Mm To 75 Mm Battery. It Is Made Of Fire-retardant Pc Material With Excellent Heat Dissipation And Electronic Circuit Design.