These 4pcs Samsung 18650 3.7V 2600mAhHigh CapacityFlat Head Rechargeable LithiumBatteries we highly recommended play rather important roles in electronic devices. They feature high performance， great durability and environmental protection. They have high energy density and low cost. Designed into rechargeable style， they can be used several times. Environment-friendly， economical and practical， they are green products to serve you. Besides， they can serve as a low-cost base load for large-scale storage， they work well both in low and high temperature conditions. Generally， they can provide excellent continuous power sources to your device.                                    Features             High quality and durable<br> Provide excellent continuous power sources to your device<br> High capacity， high density and long service life <br> They are good both in low and high temperature conditions<br> Fit for notebook and other electronic devices<br> High-performance and environmentally-friendly<br> Rechargeable style is economical and eco-friendly <br>                                                            Specifications             Brand     Samsung    <br> Type     18650 Battery    <br> Voltage     3.7V    <br> Capacity     2600mAh    <br> Color     Purple    <br> Dimensions     (0.67 x 2.56)" / (1.7 x 6.5)cm (Dia. x L)    <br> Weight     6.35oz / 180g     <br>                                                             Package Includes            4 x Lithium Batteries<br>