![]() ![]() Now, let us apply all these values in the above-said battery backup time formula.īackup Time (in hours) = 150 x 12 / 290 = 6.2 So, the total load in your case is 120 + 150 + 20 = 290 Watts. Taking your inputs into consideration, you can calculate your total load, like: So, what will be your inverter battery backup time, and how long will your appliances run in this specific case? Let’s find out. You want 3 tube lights, 2 fans, and 1 Wi-Fi router to run on that battery. Let us assume that you have an inverter battery with 150 Ah of capacity and 12 V of input voltage. You can use the following simple formula:īackup Time (in hours) = Battery Capacity (in Ah) X Input voltage (V) / Total Load (in Watts) How to Calculate Inverter Battery Backup Time? ![]() However, you can easily calculate the accurate battery backup time with a simple formula or use a battery backup calculator. ![]() In general, you can expect your inverter battery to last anywhere around 5 to 10 hours when it is fully charged. The UPS backup time depends on the power consumption of the UPS, the power of the load, and the battery capacity. All you need to know are a few parameters and you are good to go. They often end up asking the salesperson and rely on their words rather than figuring it out themselves.īut what you need to remember is, calculating your UPS/inverter battery backup time is not rocket science. However, very few know how to calculate UPS load and backup time. No one has the time or patience to sit around and wait for the grid power to get restored since there is so much to do. Most people these days depend on inverters for uninterrupted power supply for office work and household chores. ![]()
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