Does anyone know what the least voltage necessary to start the Focus ST?
Reason: I have a dash camera that records while there is motion when the vehicle is parked.
It has a setting for a voltage regulator that kills the camera when the battery drains to a specific level.
What is a reasonable bottom voltage to ensure my car will still start and not be drained.
I have a 2013 Focus ST
Posted Oct 16, 2016, 12:21 AM UTC
Typical engine needs 12.5 volts to start.
The hard wire dash cam kits I looked into shut off at 11.6. Your car will not start at that level.
I am in the process of hard wiring mine into a fuse that has power with the key. Seems to be the best option. If you're worried about parking lot damage, you could either find another wiring kit that shuts off earlier or get a battery powered dash cam that will only charge with the key on.
I can adjust the shut off voltage of my camera. That's why I was asking. Thanks!
The 12.5 (or so) is where a healthy battery will come to rest. It should charge somewhere north of 14 volts.
You're basically giving yourself a hour or two I'd guess. Without your alternator, your voltage will drop back quickly with a load on it. I'd actually be interested at how long it takes to shut off.
I'm not sure how adjustable you can make it, but I'd probably start at 12.7 or 12.8 and see what happens.
I initially set mine to 11.8V but that was a little sketchy starting (trip counter would reset as it barely had enough juice to start). I set it to 12V and haven't had a problem since. I have the Fiesta ST though.