How to Calculate UPS Battery Backup Time

When you are plan to select an uninterrupted power supply for office work and household chores, you may wonder how to calculate the battery backup time. Here is the simple formula:

Backup Time (in hours) = Battery Capacity (in Ah) X Input voltage (V) / Total Load (in Watts)

Let us assume that you have an inverter battery with 150 Ah of capacity and 12 V of input voltage. You want the UPS that is able to supply power to 3 tube lights, 2 fans, and 1 Wi-Fi router.

Taking your inputs into consideration, you can calculate your total load, like:

 3 tube lights = 40watts x 3 = 120 Watts

2 fans = 75watts x 2 = 150 Watts

1 Wi-Fi router = 20 Watts×1 = 20 Watts

So, the total load in your case is 120 + 150 + 20 = 290 Watts.

Now, let us apply all these values in the above-said battery backup time formula.

Backup Time (in hours) = 150 x 12 / 290 = 6.2

So, your inverter battery will last around 6.2 hours to keep your needed appliances running.

How to improve the battery's backup time

The UPS backup time depends on the capacity of the battery. If you want to ensure long-lasting battery backup time, following the below steps:

Decreasing the load will directly improve the backup time. Less load means fewer appliances and more backup time.

You can invest in quality products from a reputed company like Genus. Genus manufactures high-quality products with high efficiency, resulting in fewer power losses and more backup time. Genus inverters come with improved battery life as they prevent the battery from overcharging.

Use the right charging setting of the battery.

In Conclusion

Regarding to the battery backup time, you can easily calculate or directly contact our sales.