Solar Charge Controller for managing battery charging which helps to increase a batteries lifetime by preventing overcharging and over discharging.Controller includes priority charging function to set between 10% and 90% of solar panel power to battery one or two.Battery should be 12V or 24VMicrocontroller digital accuracy. State of charge (SOC) showing battery condition Pulse Width Modulation with four stages of charging. Controller charges battery types: Lead Acid, AGM and GelElectronic Protection Against. Short circuit. Reverse current. Reverse polarity. Lightning-protection. Overcharge protection. Over discharge protectionBrand newType: Solar Charge ControllerMaximum Input Volts: 41VMaximum Input Watts: 260W for 12V batteries, 520W for 24V batteriesBoost Voltage: 14.6VBulk Voltage: 14.5VFloat Voltage: 13.8VModel Number: 20A Solar Charge ControllerApplication: Charger Controllercolour:BlackMaterial:Metal + plasticPackage Contents:1 x Solar Charge ControllerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.