Hi there:<p>I had posted a question early last month about a problem with my car--thanks George Dill for the advice!<p>I have another problem and this time I'm sure it is with the battery or alternator. I have taken the car into my mechanic (he's actually more of an Audi expert) and they have run various tests on both the battery and alternator because the battery gauge will go down when I'm sitting in traffic or at a light, only to go back up into the medium range when the car is moving. The mechanic swears everything is OK but I'm not convinced and I don't want ot be stuck on the road. <p>Last night I was driving home during a storm with the lights, wipers, etc. on and when i had to stop, the battery gauge went down dramatically and the car was slightly shaking. So basically the battery gauge moves when I'm stopped and goes back up when the car is moving. <p>Is there anything that my mechanic might be missing? Any help will be greatly appreciated!<p>Thanks!