How long can a 12kW inverter last

In general, well-made power inverters are estimated to last 5 to 15 years. However, users can prolong the lifespan depending on maintenance and care habits. To understand this first of all we need to know battery capacity is measured in Amp-hours (Ah) so to make the calculations easier first. . As a simple rule, to calculate how long a 12v deep-cycle battery will last with an inverter multiply battery amp-hours (Ah) by 12 to find watt-hours, and divide by the load watts to find run time hours. Finally, multiply run time hours by 95% to account for inverter losses. Introduction to Solar. . A 12-volt, 100Ah battery can power a 1000-watt inverter load for about 1. . This calculator helps to estimate how long an inverter can run a particular load with a given battery capacity and efficiency. [pdf]