My oldish Banner battery seems to hold at between 12.6v and 12.7v for weeks although I sometimes put it on a Ctek especially in this colder weather.
However I have removed the immobiliser and I always turn off the battery isolator switch if the car is left for more than a couple of days.
Possibly a stupid question to the more electrically minded amongst you but to check residual current draw do I simply disconnect the earth lead and run the multimeter between the lead and the battery negative terminal?
