majon7

I have a 07 Astra petrol 1.8 hatchback . I was driving last week everything seemed ok . I parked out side the house went in for about 10 mins went back into car and it was as if there was no battery in the car there was nothing no dashboard lights , no clicking ,the remote locking didn't work the battery was totally flat. I put a charger on the battery the car started and I drove off. I drove for about 30 mins with lights on there was no dimming of lights , no battery light on dash as soon as I turned the ignition off it went flat again . I have done the fuse test , cleaned the earth connection , checked no lights on , checked alternator all ok . Put brand new battery on. Any ideas ?

I have a 07 astra petrol 1.8 hatchback . The abs light has come on and I have taken to a garage who could not find any codes at all . The car is braking well, no loss of power on the power steering , tracking control all good, brake fluid topped up . Any ideas?