starting the car will kill most of the battery life aswell as the lights,,, if you was to pushstart the car and have a fully charged battery then you would get say 30 mins local driving and prob a hour of motorway driving

ask Ian500 whos got the cossie powered focus how long a fucked alternator drives,,,,, as he drove back from the nurburgring,,, to the ferry swopping the battery twice and then it sort of started charging again at higher speeds,,,,, got him from dover to liverpool too aswel !!!!