You must need these2pcs Panasonic 18650 3.7V 3400mAhRechargeable LithiumBatteries with Protective Plate we highly recommended in your daily life! They feature high performance, great durability and environmental protection. Designed into rechargeable style, they can becharged up to 500 times. Environment-friendly, economical and practical, they are green products to serve you. 3400mAh large capacity design is durable and enduring. Moreover, with protective plate design, itis effective to prolongitsservice time. 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>
 High-performance and environmentally-friendly<br>
 It can be recharged up to 500 times <br>
 With protective plate design to prolong its lifespan   <br>
                                                            Specifications             Brand     Panasonic    <br>
 Type     18650 Lithium Battery    <br>
 Voltage     3.7V    <br>
 Dimensions    (0.59 x 2.76)" / (1.5 x 7)cm (Dia. x H)     <br>
 Color     Green    <br>
 Weight     3.17oz / 90g    <br>
 Capacity     3400mAh     <br>
                                                             Package Includes            2 x Lithium Batteries <br>