Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Power flatscreen lcd tv by battery?

  1. Jan 19, 2015 #1
    Hi, does anyone know if this is possible? It's a large tv and would use about 500w, I was hoping to use a 48V100ah lithium battery pack.
     
    Last edited: Jan 19, 2015
  2. jcsd
  3. Jan 19, 2015 #2

    Bystander

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Is it possible? Yes. The battery pack you describe holds 4.8 kWh. If you're using an inverter between the battery and the TV, you're going to lose some of that to inefficiency of the inverter, but not much.
     
  4. Jan 20, 2015 #3
    I thought the 48 V might be difficult - since the volume market would be 12V - found this : Inverter Supply. I would invest in the purse sine and about 2 x the expected load... 1000W continuous ...
     
  5. Jan 20, 2015 #4
    Back when inverters were expensive, heavy, and generally junk, me and my wife set out on vacation. I had a mountain of work to do, and thought to myself that I could set up a PC in the back of the van and knock out some work while it was her turn to drive.
    Here's the part important to you -
    I simply constructed a DC-DC converter that so that I got about 150V regulated DC from our 12V system. It worked great!
    Why? Because almost everything uses a switching power supply, and the first thing that a switching power supply does is rectify the incoming AC and make it DC for a DC-DC converter. What a sweet deal, no pure since wave needed!
    But, there is a complication. Since you are working with high voltage DC rather than AC, the original fuses don't work properly. Should a fault happen, they like to carry an arc. So, you're forced to give up your 25 cent fuse and replace it with a larger one of the same current rating, but made to break DC. They used to cost about $4.00.

    - Mike
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Power flatscreen lcd tv by battery?
  1. Plasma tv and lcd (Replies: 10)

  2. Battery power (Replies: 5)

  3. Battery Powered LED (Replies: 4)

Loading...