Charging Current20A; USB output: 5V/1.5A max; Battery voltage: Automatically identify 12V/24V; The controller is suitable for lead acid battery; ternary lithium battery; Lithium iron phosphate battery. Safety ProtectionConstruction of short circuit protection, open circuit protection, reverse protection, over charging protection. Dual MOS reverse current protection. FeatureBuild in industrial micro controller. Charging and discharging parameters are adjustable. The load operation mode can be set. With full management of 3 PWM load levels. Heat dissipationLow heat generation, low failure rate. Extend battery life and maintain charge power. Easy to UseWith an LCD screen that clearly displays status and data, it's easy to set up and use . Suitable for home, commercial, industrial, etc. Product Description Product Function 1. The solar charge controller is a kind of smart and versatile solar charge and sun protection. 2. The solar charge controller can fully meet your home photovoltaic system (including home lighting system). Safety Instructions 1. Controller is suitable for three types of batteries, lead-acid battery; ternary lithium battery; Lithium iron phosphate battery. Do not use other types of batteries. 2. This controller can only use photovoltaic panels as charging power. Do not use direct current or other power as charging power. 3. The LCD screen has an error of 0.2V to 0.3V, but it is normal. Connection steps 1. Connect the battery to the charge controller. 2. Connect the solar panels to the charge controller. 3. Connect the consumer to the charge controller. NOTE: The reverse order applies when uninstalling. The wrong connection sequence will damage the controller. Specifications Battery voltage: 12V/24V Charging current: 20A Discharge current:: 10A Max solar current: Max 23V (12V battery) / max 46V (24V battery) USB port: 5V/1.5A max Size: 133 x 70 x 35mm Weight: 140g Package Contents 1 20A Solar Charge Contorller 1 User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.