In many instances when were are looking at the “ability” for a car battery to power a TV for even a short time, the answer is YES. Yes, it can power the TV.Click to see full answer. Considering this, can you run a TV on a 12v battery?Powering your home TV from the 12-volt lighter socket in your car, truck or RV is possible. Since the home TV uses AC (alternating current) power and the vehicle produces DC (direct current) power which is stored in the battery, a power inverter is required to produce the type of power used by your television.Beside above, how long can I run a TV off a deep cycle battery? A 100 amp-hour AGM deep-cycle battery with a power inverter can power a large 150-watt TV for 6.1 hours, a medium 50-watt TV for 20 hours, or a small 20-watt TV for about 56 hours until the battery is fully discharged. Furthermore, how long will a 12v battery power a TV? The simple, and flawed, answer is that a 12V/20AH battery will supply 12*20 = 240 Watts of power for an hour. So if you use 35W, the battery will last 240/35 = 6.8 hours. This is the theoretical answer.Can you run a TV off an inverter?A power inverter for car allows you to run low power AC electrical devices like computers, video cams and even TVs in your car. We tell you your options. Power inverters allow you to run low power AC electrical devices like computers, video cams and even TVs in your car.