Whilst at HH my car battery was plugged into this special piece of kit. All dealers need to have it and from what I was told it a very special battery charger. It analyses the battery and can detect a failing one. It can top up and trickle charge and also maintains records of the vehicles connected to which I beleive are submitted to Honda (think I was right with this last bit but correct me if I was wrong CJ!) So any ideas what this costs??? I'll let you have a few guesses before revealing the answer!