A 12v50w water pump is connected to solar energy and used about 4 hours a day. What is the minimum b

Introduction A 12v50w water pump is connected to solar energy and used about 4 hours a day. What is the minimum battery capacity which cannot be less than Ah? First calculate the water pump current: 50÷1

A 12v50w water pump is connected to solar energy and used about 4 hours a day. What is the minimum b

First calculate the water pump current: 50÷12≈4.17A.

It is used 4 hours a day, so the battery capacity needs: 4.17×4=16.68A.

But when used, it will be protected under low voltage. It is recommended to install a 20 Ah battery.

(1) Reliable: Photovoltaic power sources rarely use moving parts and operate reliably. (2) Safe, quiet, without other public danger. It does not produce any harmful solid, liquid or gaseous substances and is absolutely environmentally friendly. (3) It has the advantages of simple installation and maintenance, low operating cost, and is suitable for unattended operation. It is particularly distinguished by its high reliability. (4) Good compatibility, photovoltaic power generation can be used in conjunction with other energy sources, and the capacity of the photovoltaic system can be easily increasedas needed. (5) High degree of standardization, components can be connected in series and parallel to meet different power requirements and have strong versatility. (6) Solar energy is available everywhere and has a wide range of applications. However, solar energy systems also have their shortcomings, such as: energy dispersion, intermittency and strong regionality. The initial cost is higher. Solar water pumps use solar energy and can be flexibly used for farmland irrigation without any external energy, providing drinking water to humans and animals, developing the economy of yards, beautifying the parks, building colorful fountains, oxygenating fish and shrimp ponds and seaside salt fields. Water supply and drainage, etc. Product features: long life, low power consumption, faible noise, balanced speed regulation, reliable operation, no interference, etc.

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