Hello Entwood do you need to disconnect the battery whist on a controlled charger? As far as recovery stories I once had a battery problem which I thought was due to a failed alternator.The recovery man said no the alternator was ok. Next day battery dead again after battery charged Different recovery man, same company, said alternator failed.Towed me to a garage who stripped the alternator out only to say that they could not get a replacement.Then towed home.Home around midnight, what an end to our holiday
I'm not Entwood, but the answer is
no. A good charger will come with(it's also available separately) a hard wire kit that you fit to the battery, and route the plug to somewhere convenient. Then you park the car, and leave the charger connected until the next time you use the car.
When I did recoveries, I regularly saw a customer nearby who had a V8 ML as a toy. As he kept the car in a garage at the end of his drive, and parked it nose in, starting it was a nuisance. After the third or fourth jump start, I recommended a smart charger. About a year later, I moved his wife's car, and got a £20 tip, because the Merc was now usable whenever he wanted.