When choosing a Lithium Battery, you may wonder why is there a 12Volt, 24Volt, 48Volt? Does each have its unique use?
Actually, before selecting the lithium battery voltage you need, you should first know your energy consumption. The load capacity is an important factor because it determines the most practical nominal voltage of the lithium-ion battery you should choose.
First, let`s take a look at the Electric Power Formula, which shows us that Power is the product of Voltage and Current in a given circuit (Watts = Volts*Amps).
Now, let`s take the formula used to calculate the current for a given load- P= V X I.
· P (Power)= Watts
· I ( Current)= Amps
· V (Voltage)= Volts
For instance, we have an energy consumption of 1000W, let`s see the comparison of power, current, and voltage.
If the voltage to be used is 12 volts, 1000 Watts= 12 Volts x 83.33 Amps
If the voltage to be used is 24 volts, 1000 Watts= 24 Volts x 41.67 Amps
If the voltage to be used is 48 volts, 1000 Watts= 48 Volts x 20.83 Amps
You can see the current change when using lithium ion battery in different voltage. It is necessary to find cables and fuses that can meet the requirement of the carrying amperes. When the current is higher, the wiring and circuit protection components need to be larger. Wire can only hold a certain current before it heats up and catches fire.
In addition, larger diameter cables and circuit breakers are needed if the current is higher. These components can be an extra expensive cost. If the current is higher than 100A, it is expensive and may cause potential issues.
12 volt Lithium Ion Battery is generally considered suitable for low power systems of 1000W or less. When the load capacity is higher, it is recommended to use a higher voltage Lithium Battery, which is more economical and safer. By doubling the battery voltage, the carrying current can be lower.
With a higher load capacity, a Lithium ion Battery of higher voltage can be a better option. For example, if your energy consumption in your house is 4800W, you can calculate that:
12V at 400Ah is 4800W, 24V at 200Ah is 4800W, 48V at 100Ah is 4800W.
That is to say, a 48 volt battery can be better because the conductors and other devices like over current protection can be smaller, and save the cost of the system.
As the solar panels and inverters improved, these solar products are more efficient and affordable. Besides, many homeowners` demands of home power consumption are greater, they want more energy. Therefore, most solar power systems for homes use 24 volt or 48 volt Lithium ion Batteries today. It reduces the cost of cables and wiring a lot.
To summarize, when choosing the battery, you should take your energy consumption into consideration first. If you are thinking of using a lithium ion battery for your application, UFO POWER can be your reliable manufacturer of Lithium Batteries. With over a decade of experience, we have offer LiFePO4 Battery solutions to cater to customers` demands in over 100 countries in different applications, including solar power systems, telecom base stations. RV, solar street light, and much more.
12 volt, 24 volt and 48 volt lithium ion battery are different and has their unique use. If you need a battery proposal for your project, we look forward to hearing from you.
