Hi guys. New week and a new problem. Car has been getting progressively sluggish on start up and today the battery low voltage symbol appeared on the dash. I fitted a brand new battery around 6 months ago after I had start up issues in the cold. I'm now starting to think the alternator is on its last legs. Can anyone tell me what the best tests are to do to determine whether I have an alternator issue? I'm picking up a voltmeter today for some basic output diagnosis.