Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: What kind of battery for the camera and screen?
Document: there are several key objections to this device.the screen is too small. if you try to move it closer, you will have a cablesomewhere in front of you.not cool.in massachusetts you can't cover the state name on the license plate.a larger unit, mounted elsewhere and perhaps with a battery power supply would work better.
I was to cheap to by the camera for my mustang which cost $2,500. This camera has a price thats right and works great quick and easy to install and my local auto mechanic cut the wire and hard wired it to the battery.
Purchased at Auto Zone. Wanted to view trailer ball hookup and one advertised is $140 +. Adapted this model to clip over the pickup tailgate aiming down towards hitch. Connected 2 lantern batteries for power placed in a small plastic container for storage when not hooking up. When required open container, put, the receiver in front seat for viewing. Lift out camera on bent hanger and hook over tailgate aiming down to hitch. Connect the wireless transmitter equipped with clips to the battery string and ready to go.
Have it mounted on the back of my camper (toy hauler) which has no rear visibility from my truck cab. Unit was fairly simple to set up with limited wiring knowledge. Does the job, but wider screen on the monitor would be nicer. Be sure to use a higher mounting point and you will have to clean camera len less often. Overall good product for the price and makes backing up much safer, but should still use a spotter just in case.
So I removed it and opted to splice directly into both wires. Running the power cable through the existing port holes in the rear door were simple enough. I fed the camera wire through the license plate lighting and attached the receiver on the inside of the door and sealed up the panels. Installation of the video receiver was the easiest of the process. True, the screen is small, but I've seen many rear view mirror screens just as small, if not smaller.
I bought this Peak backup camera unit to install on my 2002 Chevy Venture minivan and it works great!, The camera might install in min. if you want the job too look like crap, yet it took me about 3hrs for it to look like a professional did the job. (Removing panals, running wires, ect. )Some of the hardware is kind of crappy so I went to a local hardware store and spent about $4.00 (Sliver screws in kit are now black!).
To small of screen
Reception is very poor ,screen constantly flickers on & off ,I wouldn't purchase again. I have wireless cameras that have worked much better.
It has performed very well. When you first start the car the screen flashes 2 or 3 times then perfomrs well. It was easy to wire to my back up lights on my Sonata.
Installed worked for 3 weeks then it stopped working has power screen lights up but no picture going to go back threw it and try and figure out what the problem is
Answer: yes