Mini Size Waterproof solar charge controller for small power system, IP67 Waterproof Rating make it well suited for Outdoor Use Battery Voltage: 6V/12V auto; Rated Charge & Discharge Current: 5A; Maximum power of solar panel: 30W for 6V battery, or 60W for 12V battery Easy to install and operate; Load On 24 Hours; Smart PWM technology, high efficiency Prevents the battery from over charging, over discharging and Reverse discharging to solar panel at nights