Found 3rd Oct 2012
Aldi car/bike battery chargers in stock from tomorrow... I think they stock them every October so apologies to previous OP'ers. £13.99 this year so gone up a quid from last year I think but still look good value considering the cost of a C-TEK charger. I'm not sure these offer all the benefits of the aforementioned C-TEK units but then these are less than a third of the price.