Efest SLIM K2 USB Intelligent ChargerFeaturesFast Charging Mode: 1.0AAuto Detect Charging FunctionLow Voltage Activation FunctionShort Circuit ProtectionReverse Polarity ProtectionOver Charging ProtectionPiano Wire Spring Provides Smooth Sliding Action - 15,000+ Tensile TestChromium Plated Steel Cathode Insures Low Resistance While Achieving A More Precise Charging VoltageCompatibility3.6V or 3.7V Lithium-ion BatteriesMost Cylindrical Lithium-ion Batteries Ranging In Size:10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 20700, 25500, 26650SpecificationsInput: USB DC 5V 2AStandby Current: <20mAActivation Current: 50mA - 100mA1.0A CC Current: 1000mA ± 10%Auto Recharge Voltage: 4.10V ± 0.10VAuto Cutoff Voltage: 4.20V ± 0.05VCV Cutoff Current: <100mAOperation Temperature: 0°C ~ 40°CContenido del paquete:1 x Slim K2 Charger Body1 x USB Cable1 x Warranty Card1 x User Manual¿2 x Baterías Samsung 35E 3500mahSpecifications:Model: INR18650-35ESize: 18650Style: Flat TopChemistry: INRNominal Capacity: 3500mAhContinuous Discharge Rating: 8ANominal Voltage: 3.6vProtected: NoRechargeable: YesApproximate Dimensions: 18.55mm x 65.25mmApproximate Weight: 50g