... pumps: 1) DC 24v,408w,17A. 2) Head:40m. 3) Max flow: 1000L / hour. Daytime work no need battery. Nighttime work with battery ... :1) DC 24v,408w,no need inverter,daytime working without battery.2) Head: 10m,20m,30m,40m,50m,60m,70m,80m ... ) Can connect with the solar panel directly,daytime no need battery even cloudy. 1 inch outlet dc solar powered submersible irrigation ...