Drone-Battery-Thermal-Insulation-RC-UAV-Battery-Plug-and-Play-3.7V-1800mAh-Battery 1.Battery weight: 22g/1PCS, Battery size: L2.84(in) X W1.14(in) X Thickness 0.32(in).ATLEAST 40 min charging before first use. 2.GOOD SEALING: UAV battery is made of aluminum sheet material with good sealing to ensure anti oxidation, heat insulation and liquid leakage. Drone-Battery-Thermal-Insulation-RC-UAV-Battery-Plug-and-Play-3.7V-1800mAh-Battery 1.Battery weight: 22g/1PCS, Battery size: L2.84(in) X W1.14(in) X Thickness 0.32(in).ATLEAST 40 min charging before first use. 2.GOOD SEALING: UAV battery is made of aluminum sheet material with good sealing to ensure anti oxidation, heat insulation and liquid leakage.