My Uninterruptible Power Supply Selector

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NOTE: The runtimes indicated here should be considered approximate. In order to calculate runtime for a variety of loads it is necessary to perform an approximation calculation on the battery discharge curve. We are confident that the results give a good representation of actual runtime that will be obtained, however there are other factors that affect run time such as load power factor, varying load power, ambient temperature, battery charge, battery health, battery manufacturer, battery cut-off point and inverter efficiency that we can only approximate.