here we go again with fucking flaming. No bro your wrong, Its totally different. You should read up on it actually. The idea that it powers something is really the only similarity.
*The power consumption on a 360 is much greater.
*The need for 'clean' power is so much more necessary with a 360.
*The 360 power supply is around 500 watts compared to the xbox1 which is ~90 watts.
*There is more then 'just' 12 volts as suggested previously:
the big box (power adapter) is really a power supply... it converts house style electricity to 12v standard
I am hoping this was an attempt to dumb things down so that more could understand. There is 5volts and even 3.3 volts with a small tolerance for variation. Also, it is dc, direct current and not ac, or alternating current.
Also, dont be so stupid as to 'just' get a second battery. There are things within the power supply to help regulate and even prevent damage to your expensive console should a spike occur, especially in the vehicle enviroment.
Also the suggestion about the second battery bridging when the ign. is off is a bit backwards:
then you need to get some sort of 2nd battery that you can disconnect from the main battery to remove engine noise.... then while the ignitions off have both batterys auto bridge to drain some power from the main battery to the xbox battery...
but thats a pain in the arse to set up
typically its seperated when ign. is off and connects when ign. (usually car is running) is on. This way you can charge both batteries with engine on and not kill your battery thats used to start the car when ign. is off .. dedicating one battery to the xbox or whatever system.
Honestly, before you try to flame cuz I dont want to hear it you need to clean up your suggestions, they are greatly flawed and really reckless. This recklessness could very well cause damage. Not to mention say good bye to any warranty you thought you could swindle ms out of