Can I power an LCD TV with an external battery?

[Susannah]

Hi,

I know next to zero about technology and want to know if anyone can help me?

I want to buy an LCD TV, and I want to know if I can power it not off the mains, but off some sort of external battery.

I want a TV like this one.
http://www.richersounds.com/product/lcd-tv/philips/19pfl3404/phil-19pfl3404

It has a PC input, HDMI socket, USB socket.

Its power consumption is 27 watts.

Thank you for you techie help!!

[redwudz]

Not directly, no. The power supply appears to be internal on that TV. If you found one with an external 'power brick', you might be able to make up a cable from a battery source, depending on the voltage required. But I doubt many LCDs run on 12VDC.

The other option is an DC>AC inverter to convert 12VDC to probably 220VAC 50Hz or whatever your local voltage is. Some automotive stores carry these. They are not very efficient, but they would work. I use one occasionaly when the power goes out here and run my laptop with it.

EDIT: Some examples of inverters: http://www.tripplite.com/en/products/power-inverters-chargers.cfm?gclid=CNHKzOvw3KQCFQICbAodVhV4Iw
And welcome to our forums.

[DB83]

Which begs the question of why you would want to run a tv off a battery.

And even if you could, which I doubt very much, how long would you think the battery would last >> a few minutes at most.

[edDV]

Or you can run it from a computer type UPS. I have a similar 25w 20" LCD-TV that doubles as a computer monitor. A new 875VA UPS will run it about 90 minutes during a power outage. Expect time to shrink as the UPS ages. You can extend time by dimming the backlight.

Sometimes power outages can last days here so I also have a Honda generator with inverter that can power my computers, a TV and lights from gasoline. Expect to pay $500-999 for one of those.

[redwudz]

~27 watts power draw, add in the inverter loss and with a regular car battery more like several hours. I've ran my laptop from my inverter and the motorcycle sized battery in my car jumper box lasts about three or four hours. I did this for nine days when a major stormed knocked out most of our high voltage transmission lines. I took the jumper box to work each day and charged it with our standby generator.

This is the inverter I have at present:

[emfkay]

dear all,

i have a simple question!

what happens if a connect a stable dc source eg. 110V to a lcd tv that normally runs off an ac source?

i understand the concept that the smps converts the ac power to several smaller dc voltages, but is / can this conversion be bypassed if normally connected to a dc source?

if yes what would be the tolerable range of the dc sources?

regards

[edDV]

dear all,

i have a simple question!

what happens if a connect a stable dc source eg. 110V to a lcd tv that normally runs off an ac source?

i understand the concept that the smps converts the ac power to several smaller dc voltages, but is / can this conversion be bypassed if normally connected to a dc source?

if yes what would be the tolerable range of the dc sources?

regards

No. Not unless the TV is designed to work directly off DC (usually 12 VDC).

As shown above, a 110-120 VAC TV can run off a 12 VDC to 115 VAC inverter or off a generator with built in inverter.

[mariops1980]

Hi,

I know next to zero about technology and want to know if anyone can help me?

I want to buy an LCD TV, and I want to know if I can power it not off the mains, but off some sort of external battery.

I want a TV like this one.
http://www.richersounds.com/product/lcd-tv/philips/19pfl3404/phil-19pfl3404

It has a PC input, HDMI socket, USB socket.

Its power consumption is 27 watts.

Thank you for you techie help!!

Hello,

Did you find some battery, I am training to do the same but I had not found the best option.

regards.

[PhoneMatt]

At my old job, we used Sears Marine Batteries with the TrippLite inverter. I think that it had something to do with the fact that Marine Batteries can be drained and recharged many times. I was told that an auto battery does not respond well to being totally drained and recharged, over and over.

[aedipuss]

you really don't want auto batteries in your house. they are not sealed, can leak sulfuric acid, and they vent hydrogen gas. think hindenberg.

[edDV]

Methinks Susannah must have been one of Obama's energy Czars.

Sratch that, Barcelona Catalonia