An inverter battery lasts about 5 to 10 hours when fully charged. The backup time depends on the battery capacity and the load, which is the total energy consumption. You can use a formula or a battery backup calculator to determine the exact duration based on your specific voltage. . An inverter converts stored DC energy from batteries into usable AC power for appliances. The duration it can supply power depends on three key factors: Battery Capacity (Ah): The amount of energy stored in the battery. Inverter Efficiency (%): How effectively the inverter converts DC to AC power. . Our 48V Battery Run Time Calculator takes the guesswork out of battery runtime estimation. This calculator helps you determine how long a 48V battery system will run under. . To calculate the usage time of an inverter, multiply the battery capacity by 12 (to convert Ah to Wh assuming a 12V battery), then multiply by the inverter efficiency, and finally divide by the load power. Next. . Using this calculation, a 24V inverter with a 100ah battery and 93% efficiency can run a 500W load for 2. The inverter is 93% efficient. You want to run a 700 watt load, so how long can the inverter run this? The inverter can run a. . How long can a battery-powered inverter last? This article will explore this issue in depth, revealing how to scientifically match the power of the equipment, optimize load management, and then maximize the efficiency of power supply! The amount of time a power inverter can run on batteries is. .