Features: Do not need 220V access, safe and reliable, mobile phone charger can power for it, charging connection using Androids mobile phone line MICROs_USB interfaces, easy to use. IC design scheme, high charging current accuracy, full of 4.2V protections, voltages accuracy1%. Charging status. LED indicators: red charging green full. Apply to 18650 battery without protections plate. 0.3a 0.5A 0.8A 3phase current, which can be set through external resistors. Two 0.3a 0.5A position resistors is both current setting resistors, and the factory current setting is 0.8A. Buyer can change current by removing the resistance, such as removing the 0.3a resistance and retaining the 0.5A resistance, which is both the charging current and 0.5A. Specifications: Component:Plastic Length:Approx.96mm/3.77inch Option Type:1pc 18650 Battery Charger Module,5pcs 18650 Battery Charger Module,10pcs 18650 Battery Charger Module; Package Includes: Package A 1pc 18650 Battery Charger Module Package B 5pcs 18650 Battery Charger Module Package C 10pcs 18650 Battery Charger Module note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.