Hello,I have a dvr working two cameras in my vehicle.
12volts at 2amps.It works from the ignition so when vehicle is unnoccupied it is not running.
I would like if possible to operate the dvr from a seperate battery back up to save draining the vehicle battery.As it is at present when I start the car the dvr records, turn off the ignition dvr stops.
My knowledge of circuits is basic so I would like help please with a simple circuit to utelise the backup battery when main vehicle battery is at rest.
If not too hard to do would like the back up battery to be recharged when not in use.
I welcome any help and comments,John
12volts at 2amps.It works from the ignition so when vehicle is unnoccupied it is not running.
I would like if possible to operate the dvr from a seperate battery back up to save draining the vehicle battery.As it is at present when I start the car the dvr records, turn off the ignition dvr stops.
My knowledge of circuits is basic so I would like help please with a simple circuit to utelise the backup battery when main vehicle battery is at rest.
If not too hard to do would like the back up battery to be recharged when not in use.
I welcome any help and comments,John