Wuben 2600mAh 3.7V 18650 Li-ion Rechargeable Battery Features High discharge performance Li-ion rechargeable battery. Integrated with high-performance protected circuits automatically protects against overcharge, over-discharge, and short-circuiting. It can be recharged over 500 times. Safe and Eco-friendly. The battery capacity of 2600mAh, no longer to worry about the endurance of the batteries, provide ultra strong power for your devices, operating longer. Wuben Rechargeable 18650 Li-ion battery is applied for high-power CREE LED flashlights or headlamps. And they can also be backup batteries for your traveling, camping, exploring, hunting or job site working, etc.