To calculate the runtime, we can use the following formula:
Runtime = (Battery capacity in Wh) / (Heater power draw in W)
In this case, the NOMA Backup Power System has a battery capacity of approximately 1800Wh (12V x 150Ah). So, the runtime can be calculated as follows:
Runtime = 1800Wh / 1500W
Runtime ≈ 1.2 hours
Therefore, the NOMA Backup Power System 1800W can run a 1500W portable heater for approximately 1 hour and 15 minutes before its battery is fully depleted. It's worth noting that the actual runtime may vary depending on the specific model of the portable heater and its power consumption.
