Right. I've connected the Optimate charging lead to the battery, all seems well. The bike has a Datatool Duo immobiliser, before I bugger about with things is there anything I should know, do I just plug the Optimate in to keep the battery happy, or do I need to de-activate the immobiliser (which, on the face of it, sounds like a very silly question, as it makes the immobiliser pointless, but I just want to make absolutely certain I've got all bases covered)?