1. Small size and light weight. 2. The latest design of lithium battery storage solar solution and service life up to 5 years. 3. Independent research and development of MPPT controller solution. 4. Easy to use, easy installation, multiple output functions for options, more convenient to use. 5. Easy maintenance. 6. Excellent performance because of double CPU intelligent control technology. 7. Convenient and practical 5VDC-USB output port and 12VDC output port. 8. Safe and reliable with intelligent exhaust fan control. 9. The mains supply mode/energy-saving mode/battery mode can be set for flexible