Hi. I have recently purchased an 05' S4 convertible.
It's a lovely car, but the battery (which was only replaced in September) has gone flat twice! Both the Battery and alternator were tested today and both are ok.
I hadn't used the car for 6 days over Christmas, but I couldn't even use the fob to open the car yesterday.
Has anyone any advice or had similar issues? I was thinking of purchasing a solar trickle charger, but what I've read so far about them is not very positive.
Any help would be appreciated. Thanks