Flat battery

[aflemi]

I have an 05 Audi A4 1.8T 24k miles. It obviously doesn't do many miles, generally short runs. The battery was flat yesterday morning, borrowed friends jump leads and started it, ran stationary for about 40-45 mins.
This morning: flat as a pancake. Never had a problem before. Does it need more of a run or does it sound like a new battery?

 

[^neo^]

45 minutes should have given it a fairly decent charge.
i'd get it running and take it somewhere to get the battery load tested and check the alternator

 

[Carmadbutnotsad]

short runs actualy run a battery down more than long ones so could well have done in the batterey, most garages will check it for free

 

[JohnD]

You could do worse than invest in a battery charger and put it on for 24 hours or so until the Amps drawn drops to nearly nothing.

if you don't often use the car, charging it once a month or so will keep it from dying (you may have to do this on the new battery you buy if it's too late already)

 

[aflemi]

Thanks for the replies. Help appreciated.