A 700W inverter can run for about 6.9 hours on a fully charged 12V battery with a 200Ah capacity, assuming 100% efficiency. Remember the 80% discharge rule, which can reduce battery lifespan. To calculate precise usage, consider the amp-hour capacity and overall efficiency.
To calculate the operating time, divide the battery’s watt-hours by the inverter’s wattage. In this case, 1200Wh divided by 700W gives approximately 1.71 hours. However, this estimate does not account for inverter efficiency, which can range from 80% to 95%. If we assume an 85% efficiency, the effective power output reduces. Therefore, 1200Wh multiplied by 0.85 equals 1020Wh.
Now, dividing 1020Wh by 700W results in about 1.46 hours of backup time. These calculations provide a useful guideline for those relying on a 700W inverter.
Understanding this calculation helps plan for power needs. Next, we will explore factors affecting inverter performance and offer tips for maximizing battery life during usage.
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