How Long Can a 10kWh Battery Last During a Power Outage?
2024-11-20
Imagine being without electricity for a day or two—it sounds unbearable! Even a one-hour power outage can feel like an eternity. With rising electricity costs and growing geopolitical tensions, investing in a 10kWh battery backup system is a smart move. But how long can a 10kWh battery actually power your home? Here's a summary of what you can expect:
Backup Duration During Power Outages
In most households, essential appliances consume between 750W and 1000W of power. A fully charged 10kWh (10,000W) battery can provide 10 to 12 hours of backup power under such conditions. If your electricity usage is minimal, this duration may extend by an hour or two.
Depth of Discharge (DoD) and Usable Capacity
Every battery comes with a manufacturer-specified Depth of Discharge (DoD), which indicates the percentage of the battery's capacity that can be used before recharging. For example, if your 10kWh battery has a 95% DoD, you can safely use about 9.5kWh of its capacity. While you can technically use the full capacity of the battery, doing so frequently can degrade its performance and shorten its lifespan. To maximize your investment, always follow the manufacturer's recommendations.
A Practical Example: Daily Energy Consumption
Let’s consider how you might use a 10kWh battery during a power outage, assuming a DoD of 95% (usable energy: 9.5kWh):
Desktop Computer: 300W/hour × 6 hours = 1,800W
Electric Kettle: 2000W × 0.5 hours (2 uses) = 1,000W
Total Energy Consumption: Approximately 9.24kWh, close to the usable capacity of a 10kWh battery.
Conclusion
A fully charged 10kWh battery with a 95% DoD can sustain essential household operations for about one day during a power outage. By managing your energy use carefully, this investment ensures your household remains functional during emergencies.
How Long Can a 10kWh Battery Last During a Power Outage?
2024-11-20
Imagine being without electricity for a day or two—it sounds unbearable! Even a one-hour power outage can feel like an eternity. With rising electricity costs and growing geopolitical tensions, investing in a 10kWh battery backup system is a smart move. But how long can a 10kWh battery actually power your home? Here's a summary of what you can expect:
Backup Duration During Power Outages
In most households, essential appliances consume between 750W and 1000W of power. A fully charged 10kWh (10,000W) battery can provide 10 to 12 hours of backup power under such conditions. If your electricity usage is minimal, this duration may extend by an hour or two.
Depth of Discharge (DoD) and Usable Capacity
Every battery comes with a manufacturer-specified Depth of Discharge (DoD), which indicates the percentage of the battery's capacity that can be used before recharging. For example, if your 10kWh battery has a 95% DoD, you can safely use about 9.5kWh of its capacity. While you can technically use the full capacity of the battery, doing so frequently can degrade its performance and shorten its lifespan. To maximize your investment, always follow the manufacturer's recommendations.
A Practical Example: Daily Energy Consumption
Let’s consider how you might use a 10kWh battery during a power outage, assuming a DoD of 95% (usable energy: 9.5kWh):
Desktop Computer: 300W/hour × 6 hours = 1,800W
Electric Kettle: 2000W × 0.5 hours (2 uses) = 1,000W
Total Energy Consumption: Approximately 9.24kWh, close to the usable capacity of a 10kWh battery.
Conclusion
A fully charged 10kWh battery with a 95% DoD can sustain essential household operations for about one day during a power outage. By managing your energy use carefully, this investment ensures your household remains functional during emergencies.
