✔ [Solar Design] - This water pump uses a DC motor, which can be directly connected to a 100W solar panel, or can be powered by a 12V battery. Ask us how to install a solar powered water pump system. ✔ [WIDE APPLICATION] - Fits sinks 4-1/8 inches or larger. Can also be used in ponds and rivers. Ideal for pumping water into the tank. ✔ [Easy to install] - Connect the positive and negative of the water pump to the battery or solar panel or solar charge controller. Reserve a small hole above the water pump to connect the rope. Do not use cables to lift the pump. ✔ [More power supply options] - Most of our customers use batteries to directly power the water pump, such as batteries from tractor, lawnmower batteries and car batteries; of course, solar panels with a power greater than 100 W can also be connected.