Battery voltage: 12V/24V/36V/48V for car Charging current: 100A Max solar input (Voc): 15-25V (12V battery), 30-50V (24V battery), 45-75V (36V battery), 60-100V (48V battery) Maximum PV input power: 1200W (12V battery); 2400W (24V battery); 3600W (36V battery); 4800W (48V battery) 1. Advanced MPPT Maximum-Power-Point Tracking-Technology,die Tracking-Effizienz betrgt nicht weniger als 99.5%. 2. The LCD screen is designed to dynamically display the operating data and operating status of the device. 3. Compatible with Seal, GEL, Flooded and LifePO4 batteries. 4. Two 5V USB charging ports. Automatic identification 5.12V/24V/36V/48V 6. Surge protection Over current protection. 7.7 types of work mode selection. 8. Display of regulator parameters (working mode, battery voltage, PV charging current, battery discharge current, product operating temperature, delay time). 9. Some controller settings can be changed, adjusted, and saved by the user. 10. With backlight. 7 Working Modes: 1. Charging mode: no discharge. 2. Light control mode: when the controller detects nights, it delays ten minutes and then starts discharging; when it detects the day, it delays the discharge for ten minutes and then stops the discharge process. 3. Light and time control mode: when the controller detects nights, it delays ten minutes and then starts with discharge and countdown. When the timer stops at zero, the discharge stops. The longest delay time is 23:59. 4. Universal control mode: under interference free conditions, discharge is always continued. 5. Manual control mode: it is used to discharge or not. 6. Time control mode: it opens or closes the discharge regularly. 7. Test Mode: It is the same as light and delayed time control mode, but only loses ten minutes delay. 8. The controller always discharges under voltage protection. If you hold down for 5 seconds, the discharge will continue. However, the discharge is only stopped by hand. Please note that this power may damage the battery. Be careful