Solar power submersible water pump system: 1) DC 24v,2160w,90A ... need battery. Nighttime work with battery. Solar energy submersible water pumps features:1. Pump connect with panel directly.2 ... . Non-electricity area water pumping purpose.3. Green energy, 1 time ... buil-in.5. Voltage protection, current protection, water shortage protection.6. Cloudy or weak sunshine also ...