parameter:
1. Rated voltage: 12/24V lead-acid battery voltage
2. Maximum charge and discharge current: 30A
3. Solar panel input voltage range: maximum 18V-450W/36V-900W
4. Load working time setting: 1-24 hours adjustable
5. Charging mode: PWM
6. Overvoltage protection: 17V/34V
7. Fully disconnected: 13.7V/27.4V
8. Undervoltage disconnect: 10.5V/21V
9. Over-discharge recovery voltage: 12.2V/24.4V
10. Wiring specifications: less than or equal to No. 7 AWG (16 square millimeters)
11. Working environment temperature: -25-55 degrees Celsius

Features:
1. Vivid LCD graphic symbols
2. Automatic recognition of system voltage level
3. Automatic temperature compensation
4. Settable load working mode
5. Battery undervoltage protection
6. Overload, short circuit protection
7. Simple key operation
8. Intelligent PWM charging method
9. Adjustable charge and discharge control parameters
10. Accumulation of charge and discharge ampere hours
11. Battery reverse discharge protection
12. Battery reverse connection protection