"Steve" wrote in message
...
How long do you expect to play a CD for, when stationary and not running
the
engine?
I played one for 15 minutes today, in my new Sony CDXMP40, which has just
been fitted in my new (used) car which I bought last week (so I'm not
familiar with either, or the previous condition of the car battery), and I
ended up with a flat battery. Had to call a mate out with his jump leads.
I have standard-ish door and parcel-shelf speakers.

Unless there was some other reason why the battery was 3/4 discharged or you
had some other load on (igntion and hence other stuff powered up) then your
battery is duff. Check the water level (if poss) and recharge off the car
over night at 3-4amps. Then have it drop tested. Bet you have a failed cell.

Tim..