How long can the air conditioner run with a 10kWh battery?
One of the most common questions customers ask when considering a home energy storage system is:
“How long will a 10kWh battery last?”
In simple terms, kWh (kilowatt-hour) is the same unit used by your utility company to measure electricity consumption.
1 kWh = 1 unit of electricity
So, a 10kWh battery stores the equivalent of 10 units of electricity.
To make this easier to understand, let’s look at a few common household appliances.
Air Conditioner
A 1.5-ton inverter air conditioner typically consumes around 1.2kW on average.
10kWh ÷ 1.2kW ≈ 8 hours
That means a 10kWh battery can power your air conditioner through the night.
Refrigerator
A standard household refrigerator averages about 150W (0.15kW).
10kWh ÷ 0.15kW ≈ 66 hours
That’s nearly 3 days of continuous operation.
LED Lighting
A 10W LED bulb is extremely efficient.
10kWh ÷ 0.01kW = 1,000 hours
If used 5 hours per day, it could last for around 200 days.
Television
A typical 100W TV can run for:
10kWh ÷ 0.1kW = 100 hours
That’s more than 4 days of nonstop use.
For a typical household, nighttime loads usually include:
- One air conditioner
- One refrigerator
- Lighting
- Wi-Fi router
- Television
Total overnight consumption is typically around 8–10kWh.
This means:
A 10kWh home battery system is generally enough to power a family’s essential loads throughout the night.
That is why 10kWh is one of the most popular residential battery capacities on the market today. It is an ideal match for a 5–10kW solar system, helping homeowners maximize self-consumption, reduce electricity bills, and maintain backup power during outages.
If you are considering a home energy storage solution, a 10kWh battery is often the perfect balance between cost and practicality.
