... ) Head:20m. 3) Flow: 1000L / hour. Solar energy water pumps:Submersible solar power water pump for agriculture:1) DC 12v,204w,no need ... energy.2) Head: 10m,20m,30m,40m,50m,60m,70m,80m,90m,100m,150m for choice.3) Water shortage & voltage/current protection,controller ... Can connect with the solar panel directly,daytime no need battery even cloudy. DC 12v solar energy water pump for agriculture irrigation ...