Power your devices with the high-performance Vinnic 21700 Rechargeable Lithium-Ion Battery. Featuring advanced Silicon Carbon Lithium technology, this battery delivers a higher energy density – 20-30% more than traditional lithium-ion batteries. With a substantial 5000mAh capacity, 3.6V voltage, and 18Wh energy rating, it provides long-lasting, reliable power for a variety of applications requiring 21700 size batteries. This 2C single pack offers a balance of capacity and discharge capability. Choose Vinnic for superior energy density and dependable rechargeable power.