Products Package Includes: 4 × 18650 Lithium Batteries. The 4pcs 4.2V 6000mAh 18650 Rechargeable Lithium Battery provides an economical way to lower the operating costs of lithium-powered devices. Featuring 6000mAh high capacity and stable performance, it is perfect for flashlights, laptops, and other portable devices. Moreover, compared to ordinary alkaline batteries, it has no memory effect and much longer storage life of charge-discharge recycling. In addition, it supports heavy load discharge thanks to its high-grade cell. Click and place an order right now! It surely is worth your investment! High quality, stable performance. Help to lower the operating costs of lithium-powered devices. Perfect for flashlights, laptops, and other portable lithium-powered devices. No memory effect, long storage life of charge-discharge recycling. High-grade cell, durable for long-lasting use.