Steve Hopkins

I haven’t will give it a try. I don’t want to disconnect the battery every time I turn the engine off.

Have already been to auto electrical who spent 2 hours checking the. Electrical systems couldn’t find a fault

I have 2007 Audi A6 2 litre estate.

I have a nearly new  high powered battery.

 I can fully charge the battery and less than 24 hours later the battery is to low to start the car.

I have had the. Car checked by an auto electrician.

the alternator is delivering 13.6volts

the jump poles in the engine bay are  showing. 13.4volts

when I turn off all equipment but leave the engine 

running no leakage detected.

no idea what to do next any ideas please. 
 

don’t want to take it to main dealer with open ended problem . Too expensive.

car starts straight away when use a external battery booster.