Re: Help - Total loss of power on the road!
I have only had one occasion when a car lost all power and that was when a cable clamp to the battery was not tight. It was OK for a while after the battery had been out but the lead of the clamp and post got corroded and finally failed to make a good ground connection.
The OP says the cables were replaced, I assume both as some cables have corroded inside the insulation and failed to carry the current.