1Adopt industrial micro controller, charge and discharge parameters can be adjusted. 2Full 3-stage PWM charge management. 3Built-in a variety of protection functions including overcurrent, short circuit, open circuit, reverse connection, etc. 4Large screen LCD display with backlight. 5Switchable charging function for lithium battery and lead-acid battery. Features:1.Adopt industrial micro controller, charge and discharge parameters can be adjusted.2.Full 3-stage PWM charge management.3.Built-in a variety of protection functions including overcurrent, short circuit, open circuit, reverse connection, etc.4.Large screen LCD display with backlight.5.Switchable charging function for lithium battery and lead-acid battery.Specification:Model (Optional)KYZ-10AKYZ-20A KYZ-30A Batt Voltage12V/24V self-adaptingCharge Current10A20A30ADischarge Current10A10A10AMaximum Solar Input<41VEqualizationLithium battery: 12.8VLead-acid battery: 14.4VFloating ChargeLithium battery: 12.0V (default, 11.5-12.8V adjustable)Lead-acid battery: 13.7V (default, 13-15V adjustable)Undervoltage ProtectionLithium battery: 10.7V (default, 9.0-11.0V adjustable) Lead-acid battery: 10.7V (default, 9.0-11.5V adjustable) Discharge ReconnectLithium battery: 11.6V (default, 11.0-11.7V adjustable)Lead-acid battery: 12.6V (default, 11.5-13V adjustable)Standby Current<10mAUSB Output5V/2A Maximum Operating Temperature-35~60Size133*70*35mm / 5.2*2.7*1.3inWeightApprox. 205g / 7.2ozTips: All red voltage is only for 12V system, please double it while using 24V system.Package list:1 * Solar Charge ControllerNote:1. Make sure your battery has enough voltage for the controller to recognize the battery type before first installation.2. The battery cable should be as short as possible to minimize loss.3. The charge controller is only suitable for regulating solar modules. Never connect another charging source to it.4. The controller will be hot when running. Please install it in a well ventilated place.5.Please note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering. Lithium battery: 11.6V (default, 11.0-11.7V adjustable)