The formula commonly used is 10 times the capacity of the battery (in ampere hours) divided by the load of the device (in watts). The formula can be found on the label of the lead-acid battery. If you are using the device for a long time through the battery unit, it is recommended to charge the battery regularly.

How is UPS runtime calculated?

The formula generally used is 10 X the capacity of the batter in amp hour divided by the load of the device in watts. The formula can be found on the label of a lead acid battery. If you are using your device long-term from a battery unit, it is advisable to recharge your battery on a regular basis.

What is the formula for UPS?

Because of this, most UPS manufacturers will list a “power factor” to use and calculate the maximum wattage a UPS system can handle. This means that the formula for watts = volts x amps x power factor. For example, 1kVA UPS from N1C has the capacity to power 900 watts of connected equipment.