Quote Originally Posted by listermint
Id be extremely wary about one of these unless it has its own power supply. This would murder your battery quick smart unless the car is being driven quite regularly and has a decent battery in it.
I agree with you in that theres no point coming down in the morning to a flat battery and 3 hours of video of the neighbours cat sleeping on your bonnet.
Fortunately, the good ones come with a power supply that monitors the battery voltage and will cut off before a specified voltage is reached.
I'm looking into one at the moment that has a front and rear camera, front 1080p and rear 720p, that connects to my phone to view video or use as a reversing camera.