NiMH Rechargables are still cheaper, more environment friendly, leak free and most of the time higher in performance compaired to regular alkalines (not sure what the batteriser does). The metal bit of the batteriser looks like it will cause issues with metal walled items, like flashlights and ait dd size and might cause issues with tight battery holders.

So in my mind not a break through item as the article make it sound like. Some devices have similair things build in to them. I think having electronic manufactures adding a more efficient circuit will be more efficient then adding them to your alkaline batteries.