30/40/50/60/100a mppt solar- controller lcd charge accuracy dual usb solar panel battery regulator - 30a

1. always keep the battery on fill voltage condition. 2. prevent the battery from over-charging. 3. prevent the battery from over-discharging. 4. prevent the battery from reverse charging to solar panels during nights. 5. reverse polarity protection for battery 6. reverse polarity protection for solar panels 7. when the battery voltage is low, the controller will automatically cut off the load from the system. if the voltage of battery is back to normal and the load will restart working. 8. thunder protection