# How to Calculate Home Battery Backup Needs?

Your computing home battery backup needs are also one of his ways to determine how long a 10kWh home battery storage will last in the event of a power outage. Below are the parameters that can be considered for this purpose.

## ● Check daily power usage

By checking your electricity meter and monthly bill, you can know the daily electricity usage of your home. In your electricity bill, look for kilowatt-hours used. Now divide the calculated kWh usage by 30 and finally multiply the answer by 1000 to total the daily power usage.

Additionally, you can calculate the kilowatt-hour usage of individual electrical devices that you choose to use during a power outage. All you need is to find the wattage of every device individually. The kW is usually listed on the device label.

Once you've determined your wattage, the next step is to estimate the number of hours you'll be powering your particular device. Multiply the number of watts by the number of hours to get the kilowatt hours used. Let's say you use a 100 watt bulb for 20 hours. The power usage will be 100*20 = 2000Wh or 2kWh.

Therefore, following the same method, we can calculate the energy demand of all electrical appliances in our home. Finally, sum the kWh usage of all devices.

### ● Determination of blackout time

You may be wondering how many days or hours a 10kWh home battery storage can power you. right?

There is no right answer to this question as it depends on the situation you are faced with. Additionally, the number of appliances you use during a power outage will determine how long your battery will last.

Typically, a 10kWh battery would be enough to power his entire home appliance for a day. However, as you know, some electrical appliances such as air conditioners and electric heaters consume a lot of power. So if you want to power such a heavy device, you'll need a home battery with double the capacity.

That's why it's always a good idea to calculate the required power before buying a battery. That way, you'll know if a 10kWh battery is right for you.

On the other hand, if you have a solar power system and can charge a 10kWh battery during the day during long power outages. It can certainly last for days.