Two batteries died.

[ayfreetee]

When I came to get in my S3 this morning, the car had no power at all not even interior or dash lights, yet the night before it was fine, anyway I replaced the battery and that died after ten miles, the battery warning light came on and went off twice, so would I be correct in thinking the alternator has given up? I had fault code 1810, power +B terminal 30 voltage too low, thanks for any help.

 

[desertstorm]

It would appear that the alternator has probably died, You need to do some diagnostics though just try measuring the voltage when the engine is running.
When you have had a flat battery you will have loads of those fault events across many modules.

 

[Nilz]

Sounds like the alternator has died mate.

 

[ayfreetee]

Yes it was alternator, replaced it today, so now I have two good batteries, a bonus I guess.