How many hours will a 12V 100Ah battery last?
approximately 5 hours
When a 100ah deep cycle battery is connected to a 12v inverter, it is expected to last approximately 5 hours if it is discharged with a load of 150 watts at 80% efficiency and 80% depth of discharge. However, if the load increases to 300 watts, the battery's backup time is halved, and it will only last half the time.3 Feb 2023