Here are the components to build a Solar Pump, which can be used for a water feature. This design is battery powered, so that it can operate even when the sun is not shining. The battery is kept topped up by a solar panel. Rather than have a simple on/off switch, the pump has a motion sensor, and comes on for a pre-set time. This time can be set by the user to be a few seconds up to many minutes.
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The Solar Pump consists of 4 main components which are listed below and are generally available from E-Bay or Ali Express. We will also include a PP3 battery connector and some copper mesh, which is used as a filter for the pump.
 
1. DC 12V 3m 240L/H Ultra Quiet Brushless Motor Submersible Pool Water Pump  (£3 to £6)
 
2. DC 12V 24V 6A Automatic Adjustable PIR Motion Sensor Switch (£3 to £5)
 
3. 9V 21800mWh Lithium Ion Rechargeable Battery (£6 to £8)
 
4. Solar panel 5 watt with USB (£5 to £7)