Power relationship between inverter and lithium battery

Today we will discuss the power relationship between lithium battery and inverter (without considering the factor of power consumption time)

Let's take a 5KW inverter as an example

A 5KW inverter can normally use a 51.2V 100AH ​​(5KWH) lithium battery

The continuous discharge current of a 5KWH lithium battery can reach 100A. The maximum stable discharge power of the battery can reach 51.2V*100A=5.12KW

5.12KW is greater than the 5KW of the inverter, so when the inverter discharges 5KW, the lithium battery power can keep up

What if the high-voltage inverter is 50KW

In this way, a high-voltage lithium battery is used. Normal high-voltage inverters are more complicated. Many brands have different discharge currents. For example, a 50KW Deye inverter can connect two sets of batteries, and the discharge current of each battery is 50A

So two sets of 512V 100AH ​​high-voltage batteries are needed (512V*50A*2=51.2KW)

If it is a Solis 50KW high-voltage inverter, two sets of batteries can also be connected, but the discharge current of each set is 70A, so only two sets of 358.4V 100AH ​​high-voltage batteries are needed (358.4V*70A*2=50.1KW)

If you have any other questions or good suggestions, please feel free to communicate with us. You can contact our engineers at manager@greensunpv.com