... Max flow: 1000L per hour. Solar water pump system work sketch map:Daytime connect with solar panels directly, ... Nighttime work with battery.DC submersible solar water pump system descriptions:1) DC 24v,888w,no need inverter ... 30m,40m,50m,60m,70m,80m,90m,100m,150m for choice.3) Water shortage & voltage/current protection,controller ... cloudy. DC 24v submersible solar water pump system for farming 70m deep