To calculate UPS Runtime you need a certain formula to do so.
But what exactly is run time? Runtime refers to how long a battery will last when being used or under a certain load. Think cell phone or PC battery life – everyone is aware that a battery needs to be recharged when using these devices.
There are three factors that are taken into account when measuring runtime. The first is the hardware itself – how good a condition is the battery to begin with? Secondly, runtime will depend on the amount of current that the load draws from the battery.
The third factor that will be taken into consideration when measuring the runtime of your battery will be the system itself – in other words, the inverter and the wiring that connects the device to the UPS system.
This is the formula that is commonly used to calculate Battery Run Time:
Although there is seldom a 100% efficiency factor when hooking up a battery with a device, the formula below will be based on this case scenario:
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.
Running a battery until it runs flat is not good for the battery as it will reduce the life of the battery.
Calculate UPS Runtime to ensure longevity of your battery.