New job means I'm no longer using the car for the daily commute. Battery low warning has flashed up last couple of weekends, so I'm looking for ways to keep the battery topped up. I've read good things about these CTEK battery conditioners, but I don't have a garage, so any mains lead is going to have to trail out of the house and be exposed to the weather. And am going to prefer one that can charge using the cigarette socket as I don't fancy leaving the bonnet/boot open when parked on the street. Hence, am wondering what people's experiences are of using these devices. E.g roughly how long do these take to re-condition batteries that are running low. And can you interrupt these when they are say halfway into re-conditioning the battery without harming the battery itself....which I might end up doing if it starts raining.