1. System voltage 12V/24V/36V/48V automatic recognition; 2. Intelligent 4 stages PWM charging: Bulk, Absorption, Equalizing, Floating; 3. LCD display with Back-lighting shows device  operating data and working condition; 4. Humanized simple button operation; Adjustable charge-discharge control parameters; 5. Support more kinds of battery: Lead-acid battery (AGM, Gel, Flooded) and Lithium battery (LiCoMnNiO2, LiFePO4); 6. Multiple load control modes: 24Hours Working Control, Light Control, Light and Dual Time Control; 7. Automatic temperature compensation and accumulated function of charge and discharge KWH; 8. Double USB output 5V/2A; 9. Perfect electronic protections; 10. Warranty one year.