Have you ever experienced interrupted play caused by a dead battery when you are away from home or travelling? Here we are pleased to recommend you this 18650 3.7V 4400mAh Li-ion Rechargeable Cordless Phone Battery. Use the battery to keep your electronic device powered up when away from home or travelling. Through rigorous test for voltage， capacity， compatibility and safety， you can feel free to use this 18650 battery. Ensure your device always have plenty of power with this durable and reliable 18650 battery. Don't hesitate to bring such an excellent battery home!                                    Features                New battery<br>    High quality and durable<br>    Provides excellent continuous power sources to your device<br>    High energy density， long life battery<br>    This battery has an extra long life for all your battery powered devices<br>                                                            Specifications                        Battery Type     18650 battery    <br>          Voltage     3.7v    <br>          Capacity     4400mAh    <br>          Charge Time     about 6~8hours    <br>          Rechargeable Times     About 1000    <br>          Weight     3.17oz / 90g    <br>          Dimensions     6.6 x 1.7 cm / 2.60" x 0.67" (L x Dia)    <br>                                                             Package Includes                1 x 18650 3.7V 4400mAh Li-ion Rechargeable Cordless Phone Battery<br>