How Long Will a 12 Volt Battery Run a 2000 Watt Inverter?

How To Match Lithium Battery And Inverter?

Battery rated power = rated voltage x rated current

The actual power consumption of the battery is only about 90% of the theoretical power. The actual available power ≈ rated voltage x rated current x 90% The rated voltage of the inverter = the rated voltage of the lithium battery

Battery rated current > inverter rated current Battery rated power > actual load power

Inverter rated power > inverter actual power selection Inverter type selection:

01. Sine wave inverter: higher price, more stable, strong load capacity, high load power 02. Modified sine wave inverter: slightly weaker load capacity, less stable, low conversion efficiency

How Long Will A 12 Volt Battery Run A 2000 Watt Inverter?

Example:

12V The rated voltage of 200Ah lithium battery is 12V, and the rated current is 200A. The rated power of this battery is: 12Vx100A=2400W

The power of this battery is: 12Vx200Ax1H=2400W.H=2.4kWh, the actual power is about: 2.4x90%>2.16kWh

Using this battery with a load of 1800W, the usage time is about:

2400W.H/1800W≈1.33 hours

This battery loads 2000W electrical appliances, and the usage time is about 1 hour

The selection parameters of the inverter should be:

Sine wave inverter with a rated voltage of 12V

The rated current of the inverter should be less than 200A, about 180A

The rated power of the inverter should be greater than 1800W (rated power of the electrical appliance) The actual load power of the battery should be less than 2400W (rated power of the battery)