Tenergy 3.7V 2600mAh Li-Ion 18650 Button Top Rechargeable Battery with PCB

Rechargeable 3.7V Li-Ion 18650 cell.
Unique patented PCB design prevents voltages outside of 2.5-4.25V.
High energy density and capacity, and lightweight.
Manufactured under ISO9001-2000 to assure quality.
Battery tested by IEC (International Electrotechnical Commission) standard to ensure capacity, quality, and life span.
Ideal for flashlights, portable power devices, lighting applications or other devices requiring 3.7V.