There are three options for powering TVs:

1. Using a regular AC-power TV with a combined inverter+battery
2. Using a regular AC-power TV with an inverter and 12v battery
3. Using a DC-power TV with a 12v battery

Option one: AC Power with combined inverter+battery

TV (32”):

• $200-300: https://www.jbhifi.com.au/collections/tvs/tvs-22-32

Combined inverter+battery:

• Powertech Portable Power Centre 42Ah
  
  • Old model ($219): https://www.ebay.com.au/itm/143586886033
  • New model ($229): https://www.ebay.com.au/itm/144265552450
    
    • Equivalent 14Ah for 12v devices, should last at least 4 hours

Option two: AC Power with separate inverter+battery

TV (32”):

• $200-300: https://www.jbhifi.com.au/collections/tvs/tvs-22-32

12v LiFePO4 Battery:

• 18AH (2kg)
  • $199: https://www.jaycar.com.au/12-8v-18ah-lithium-deep-cycle-battery/p/SB2212
  • Lasts 5h 40m of playing video on repeat from USB
• 25AH (3kg)
  • $299: https://www.jaycar.com.au/12-8v-25ah-lithium-deep-cycle-battery/p/SB2213
  • Extrapolation based on 18AH: 7.8 hours

Battery charger:

• $50: https://www.jaycar.com.au/6-12vdc-1-5a-8-step-intelligent-lead-acid-and-lithium-battery-charger/p/MB3900

Battery to cigarette socket cable:

• $15: https://www.jaycar.com.au/15a-cigarette-socket-to-8mm-eye-terminal/p/PT4451
  • The LiFePO4 batteries listed above have screws in the terminals; these can be unscrewed so that this cable's metal rings can be placed over the corresponding terminals and then fixed in place with the screws.

Inverter:

• $60: https://www.jaycar.com.au/150w-cup-holder-inverter-with-dual-usb-charging/p/MI5128

Option three: DC Power

No inverter required.

TV (32”):

• Kogan: https://www.kogan.com/au/buy/kogan-32-led-smart-tv-series-7-eh7520/ ($219 each, no minimum order)
• ‘Raggie’ brand: https://www.alibaba.com/product-detail/RAGGIE-32-Inch-Solar-DC-12V_60780038161.html (minimum order of 5)

12v Battery:

• Lithium-ion 12v DC battery with switch:
  • https://www.ebay.com.au/itm/185616516182
    • 9.8Ah: approx 1h 50m
    • 12Ah: approx 2h 10m - 2h 30m
  • https://www.ebay.com.au/itm/363089075283
    • 10A (‘12v Power + 10000mah battery’)
  • Attach by velcro onto the back of the TV, plugs straight in

Attaching straps

This is only one method - there may be better options available. You can use one of the below straps to screw into the back of the TV (two screws horizontally), and fit the harness through the strap. An alternative to the strap would be a wall-mount bracket.

Straps:  

• $15: https://soniq.com/au/shop/UAS001-detail
  • Can pickup from Braeside VIC

Harness:

• $60: https://www.bogong.com.au/rock-empire-eight-vario-chest-harness.html
  • Can pickup from Melbourne CBD