14Jul
Knowing how long your inverter can back up for is essential for effective and efficient use of your solar inverter system. With this article, you will be able to calculate in 5seconds.
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Are you interested in setting up a solar system but you want to know how long the system can back up for? You need to read this to the end then.
One major concern of anyone who is interested in setting up a solar system or even someone who already has it installed is to understand how long the inverter batteries can back up for.
In this article, I'll guide you through the process of calculating your inverter battery backup time. Knowing how long your battery will last during a power outage can help you plan your energy usage effectively.
So, let's get started!
There are four major factors to determine the back-up time
Number 1 – The total appliance load in watts.
The load is the amount of energy required per hour for appliances connected to an inverter and is measured in watts. The appliance load is the wattage of all the appliances or devices you plan to run on the inverter during a power outage. This information can be found on some device label.
Number 2- Inverter battery capacity.
Battery Capacity determines how fast current flow and it is measured in Ampere Hours. High Ampere Hour means electricity quickly flowing through the battery and delivering power to your appliance. Example of battery capacity is 220AH.
Number 3- Input Voltage.
The battery input voltage is the unit of potentiality in your battery and it is measures in volts. In general, home inverter batteries come with 12V of input voltage.
Number 4- Battery Efficiency
Battery Efficiency is the amount of energy you get from the battery for consumption relative to the amount of energy you input to the battery. Simply put, you can’t use 100% charge given to the battery as output for powering the appliances. This is due to some amount of energy lose during the discharge.
Now let’s calculate:
Battery Backup Time (in hours) = Battery Capacity (in Ah) * Battery Voltage * Number of Batteries * Depth of Discharge/ Load in Watts
Suppose your battery capacity is 220 AH/12V at 80% Efficiency/ Depth of Discharge and a total appliance load of 300
Battery Backup Time = 220 * 12 *1 *0.8 / 300 = 7.04
This gives approximately 7 hours Battery Backup Time
Keep in mind that the calculated backup time is an estimate and may vary based on factors like the efficiency of your inverter and the health of your battery. Older batteries may have reduced capacity, so it's important to periodically check and maintain your battery to ensure optimal performance.
That's it! You've successfully calculated your inverter battery backup time.
Remember, this is just an estimate, and actual backup time may vary depending on various factors. I hope you found this article helpful. If you have any questions, please leave them in the comments below.
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