1. Mono high-efficiency solar panel: 30W, 18V, 5m connected cable, life for 15years

2. Maintenance-free lead-acid batteries: 17Ah, 12V, life for three years;

3. Energy-saving lamps: 5W, 12V, luminous flux can reach 200 lumens or more; 3m
    connecting cable;3W and 5W LED lamp is also an option.

4. Controller details: rated operating current 3A; PWM charge control makes high
    efficiency; back to differential discharge control does not appear oscillation phenomenon;