So, my CLS has been sat still for some time covered up and as you'd imagine the battery is knackered. Tried charging it but not having any of it so I have an OEM one I'll be picking up today. Over the winter I know the car will be laid up and covered as I won't be using it during the winter months. In that time I'd actually like to keep the battery in decent condition and I'm aware that you can buy various trickle chargers. My problem is that it won't have access to a permanent power source, don't have an outside plug but I will be able to put it on charge for a day or so here and there. Any ideas on a solution? If I got for one of these intelligent battery chargers, I'd hope to run the cable out of the boot and underneath the cover so I can just plug in as and when but will a few hours a week be enough to keep the battery healthy? I'm wary of disconnecting the battery entirely as knowing my luck it'll have a funny turn and I'll end up down at the local Merc specialist!