Read also: How Many Watt Solar Panel To Charge Deep Cycle Battery? (Explained) Power Inverter Minimum Input Voltage You can run a TV off a deep cycle battery for around 20 hours In case that the current draw is lower, the running time will go up, and vice versa.
So for example, a 41Ah battery will provide 2.05 amps of current over 20 hours period before reaching the shutoff point. For car batteries, it is usually at 10.5 volts.Īmpere-hour rating or capacity of a car battery is the current it can continuously provide over 20 hours period and at an environmental temperature of 80 degrees Fahrenheit. When any battery is at its 0% capacity, it means that it has reached its shutoff point. Typical car batteries are made of 6 cells, with each providing 2.1 volts at the full load, in other words, when fully charged a car battery will provide 12.6 volts. How Long Will a Car Battery (12v) Power a TV? > Check out the video below: The table below shows how many hours you need to power a TV with a car battery: Screen Size (Inches) The reason is the combination of car battery capacity and inverter’s minimum acceptable voltage. So in the above example, you can expect your TV to run for around 69.7 hours of running time, with everything else being equal.īut in real life, nothing is actually equal to laboratory testing, and actually running time of the TV set of your car battery will be closer to 60 hours. On average, it is around 15% of energy loss. All power inverters have some percentage inefficiency and power loss when converting 12 volts direct current to 120 volts alternating current. To quickly find out the maximum how long you should expect a car battery to power your TV set, all you need to do is to divide the battery’s ampere-hours (Ah) capacity with TV sets amp draw.įor example, if your battery has a 41Ah capacity and your TV set draws 0.5 amps, it will give you a maximum of 82 hours running time.īut, that is not a full picture.
The short answer is that it depends on two things, how much power your TV set draws and what is the capacity of your car battery. However, a battery might be able to provide 500 Amp of current at a voltage of 8 to 10 volts during this starting phase.Ī Standard car battery has 60 AH capacity and 12 Volt so its power capacity is around 720 Watt – hours.
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