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Question

Portable power supply for LED TV

Apr 17, 2017 1:11PM PDT

I have created a portable TV rig for my use in coaching in a high school gym. I can certainly power it with a long extension cord, but was wondering if there was a good product out there to power it portably. The TV is a 75W LED flat screen. I also need to power an Apple TV device. Any suggestions for something that won't cost too much and that would last at least 5 hours?
Thanks,
Dave

Discussion is locked

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Answer
When designing power supplies
Apr 17, 2017 1:32PM PDT

You learn the source must be about double the load. Example. Your car loafs along at 60 but might hit 120. So many other examples.

Let's use 100 Watts for 5 hours to give headroom on capacity. You'll need a battery and the invertor.

Examples:
https://www.batterystuff.com/kb/tools/solar-calculator.html gets me a figure of 42.500 Amp-Hrs (42 and 1/2.)

Nice sine wave convertor: https://www.amazon.com/Watt-Pure-Sine-Wave-Inverter/dp/B01N3UJS4U (99.99 bucks.)
Deep cycle battery: https://www.amazon.com/Universal-Power-Group-Battery-UB12500/dp/B00573EI76/ (under 90 bucks.)

Or get a Yeti. https://www.amazon.com/Goal-Zero-23000-Solar-Generator/dp/B00D5RVMAM

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Yeti's not gonna cut it
Apr 17, 2017 1:46PM PDT

They are only for low power applications, such as cell phone charging.

The OP will resort to extension cords to make his life easier and more cost effective. Just upgrade the gauge of the extension cord if needed.

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Yes, the Ah is 33Ah so it's short on time but it can be
Apr 17, 2017 1:52PM PDT

Expanded with a second Yeti or battery. TVs are listed as devices it can power.