Welcome to visiting our site. We have superior Lithium batteries selling and service. There is no doubt that they are high quality and durable as well as high energy density. Also， these batteries are regarded better both in low and high temperature operations. Generally， they fit for camera， watch， calculators and other electronic devices， and provide excellent continuous power sources to your device. It is worth a try! <br>                                    Features            High quality and durableProvides excellent continuous power sources to your deviceHigh energy density， long life batteryIt is good both in low and high temperature perationsFit for camera， watch， calcutors and other electronic devices                                                            Specifications            Brand    UltraFire    <br>Type    18650    <br>Marking Capacity    4000mAh    <br>Voltage    3.6 - 4.2v    <br>Chargering Time    6Hours    <br>Dimensions    6.8 x 1.8cm / 2.68" x 0.71" (L x Dia.)    <br>Plus Plate    Yes    <br>Rechargeable    Yes    <br>Color    Black    <br>Weight    3.25oz / 92g    <br>Battery Type    Lithium battery    <br>Dual Mode Protection Board    Yes    <br>                                                            Package Includes            2x 2Pcs UltraFire 18650 4000mAh 3.6 - 4.2V Lithium Batteries with Board Black                                                            Extra Info