I'm a bit suspect about the condition of the old battery, to be fair. Once we're up in Rosedale Abbey on a bank holiday weekend, bearing in mind we'll need the car if we go up on our motorbikes, if the battery doesn't charge properly then we're stuck. But a C-Tek looks like a good way of keeping the car on charge especially in winter.
By the way, you guys having the expertise that you do, riddle me this. Must you disconnect the black lead every time you put the car on charge or can you just clip it on anywhere on the system that's "further" from the negative terminal than the stop/start module?
Thanks
J