How Many Batteries Do You Need for 2000 watt Solar System?

You can easily find the kWh value of solar batteries online. However, if you cannot identify the kWh value for a battery, you need to determine how much capacity the battery has in ‘Ah’ as well as the input and output voltages. The battery capacity may vary between 100ah and 1000 ah.

If I presume that the battery you prefer has 12 volts, then you need one 100ah battery for 1200 kWh and two 100ah batteries for 2400kWh. However, if you add the DOD of 50%, then you need at least three 100ah batteries for a 2000-watt or 2kw solar system. Now, what is DOD?

Depth of Depletion (DOD) Rate

Please note that an inverter can use 30% of the reserved power from the solar battery package. Therefore, experts recommend that a max of 50% DOD must be considered when calculating the storage capacity of the battery. It is the wasting of energy due to power transfer from one device to the next.

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Take a look at a typical solar battery with 12 volts as well as a 200ah backup. This implies it could produce 2.4 Kilowatts of energy per hour. In contrast, a battery that is 24 volts produces 4.8 kWh of energy per hour.

As an estimate, I've assumed that 50% of energy loss is due to conversion from one device to the next. That means you need two 200ah batteries with 24 Volts.

 


Factors that Determine the Number of Batteries for Your Solar System

Although the number of solar batteries will depend on many other variables, including the capacity of photovoltaic cells, the atmosphere, temperature, brand, and energy consumption rate. Here I'll explain these factors because, as a consumer, it is important to know how solar batteries operate before investing in a solar system. The primary factors that influence the number of customers include:

Related Post: How Many Batteries Do You Need for 5000-watt Solar System?

Factor 1: The Voltages of Output and Input

If you buy a 1000AH battery that has a 12-volt power, then it could hold up to 12000 kWh energy. Indeed, 12-volt or 24-volt batteries are popular in the market. There are other options like 36 volts, 48 volts, and 96-volt. The output volt regulates the power battery package supplied to the electrical appliances, so the input and output values of the solar batteries, as well as inverters, are crucial when considering their capacity.

Factor 2: Electricity Consumption

When you calculate energy consumption, it is important to identify appliances with higher energy consumption rates, such as air conditioners, heaters, computers, and other equipment. If you are installing a solar system, then you hardly need this system for a few hours a week. In that case, you may not use these appliances so that you can install a low-power solar system. Besides that, certain appliances may only be used just once a week. Before calculating the number of batteries, take a look at them in order to estimate the amount of energy used over the course of a month.

It is essential for those who want to go off-grid. It means you do not want to use electricity produced from coal energy. However, when you switch electricity to renewable power, you will need to set up solar panels and batteries. If you do, you will need to estimate the power consumption. It is, in fact, an estimate, but there are numerous other factors to take into consideration. That is why you should consult an expert before changing the energy supply.

I hope I have answered the questions you have regarding the number of solar batteries you need for a 2000ah or 2kw solar system. If you have any questions, please feel free to comment below.

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