Hello,
I backed this projector on Kickstarter and it had finally arrived
http://www.dosowls.com/odin/
At full brightness (which it really needs to be at) the internal 7.4V battery only runs for 35 min. The AC to DC power supply is a 5.5mm 12V DC with a 3 amp fuse. If I want to run the projector off a car or 12V power pack do I just need to get a 5.5mm 12V 3amp car charger like this?
https://www.amazon.com/gp/aw/d/B00BP2ZU0C/ref=ya_aw_oh_pii

In addition all this got me thinking, I have a battery plate that takes a sony camera battery (running at 7.4v) and steps it up to 12v. It has a 5.5mm plug can I just plug that into the projector? Do I need the 3amp fuse if I am connecting DC? It seems the way the projector is designed it's always running off its internal battery. If I were to unplug the projector from the wall outlet all that happens is the battery icon switches from charging/charged to running off battery (like an android tablet). The last thing I want to do is blow it up by supplying too much power or power that should have gone through a fuse. The manufacture hasn't been much help in this. Only answerer I got was, Don't know, but let me know what happens. I figure the car adapter should be ok, because it has the fuse. The battery plate I have is used to power a blackmagic pocket camera for hours over its 30min runtime, which gave me the idea I could possibly use it for the projector as well.
Thank you so much for your help!!

 

You could always get a dc->mains module for your car and run the unit as though it was plugged in at home.

 

Bear in mind that a 12V car battery is only nominally 12V. The actual voltage will typically be ~ 13.8VDC (higher if the car battery is being charged by the alternator). You really should use a fuse, since inadvertently shorting a car battery is DANGEROUS.

 

Thanks, I got the cable with the 3 amp fuse. I want to avoid using an inverter because one of the potential power sources is this
http://goplugbags.com
And they stated you lose half the power with the conversion, so they recommend trying to plug things DC if you can.
I found a link to the battery plate I mentioned.
http://www.bhphotovideo.com/c/product/1041084-REG/ikan_bmpcc_pwr_bc_s_cinema_camera_belt_clip.html
This plate steps up 7.4 V batteries to 12V. Do I need to use a cable with a fuse with that's battery plate?
Again thanks for the help!!