Household Energy Storage Lithium Battery Working-Time Calculation: From 5kWh ,10KWH,to 15kWh

Household Energy Storage Lithium Battery Working-Time Calculation: From 5kWh ,10KWH,to 15kWh

Below are clear, ready-to-use calculation results for family electric appliance  all based on the following parameters:

Lithium Iron Phosphate (LiFePO4) household energy storage batteries: 5kWh / 10kWh / 15kWh

Total household power consumption: 1kW / 2kW / 3kW / 4kW / 5kW

All calculations are based on an 85% actual available capacity (accounting for inverter efficiency and battery protection, which is closest to real-world usage scenarios).

Calculation Formula:

Available Power Supply Time ≈ (Battery Capacity × 0.85) ÷ Total Household Power

I. 5kWh Household Energy Storage Battery

• Total power: 1kW ≈ 4.25 hours

• Total power: 2kW ≈ 2.13 hours

• Total power: 3kW ≈ 1.42 hours

• Total power: 4kW ≈ 1.06 hours

• Total power: 5kW ≈ 0.85 hours

II. 10kWh Household Energy Storage Battery

• Total power: 1kW ≈ 8.5 hours

• Total power: 2kW ≈ 4.25 hours

• Total power: 3kW ≈ 2.83 hours

• Total power: 4kW ≈ 2.13 hours

• Total power: 5kW ≈ 1.70 hours

III. 15kWh Household Energy Storage Battery

• Total power: 1kW ≈ 12.75 hours

• Total power: 2kW ≈ 6.38 hours

• Total power: 3kW ≈ 4.25 hours

• Total power: 4kW ≈ 3.19 hours

• Total power: 5kW ≈ 2.55 hours

IV. Practical Guide for Countries with Power Shortages (Ready to Send to Customers)

1. 5kWh Battery usually for emergency use

Ideal for: Emergency power supply for small loads (e.g., refrigerators, lights, and routers). It can provide power for about 4 hours at 1kW and will drain quickly once the air conditioner is turned on.

1. 10kWh Battery for normal daily use

Ideal for: Basic power needs of average households. It can last the entire night at 1kW and support air conditioning (2-3kW) for 2 to 4 hours.

1. 15kWh Battery for frequent power outages or sever power shortages

Ideal for: Areas with frequent power outages or severe power shortages. It can provide power for nearly 13 hours at 1kW and support all household appliances for several hours.

V. Summary Table (Suitable for Product Images & Quotation Sheets)

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Batteries ,real goods for you,also glad to supply service to you, our email: export@solpowerkit.com welcome to contact us.