I just chopped mine off as it was not very good and fitted a universal one, although a bit of a fiddle I soldered the wiring as best as possible so the 'clamp' was clamping a decent lump and not strands, if that makes sense...
Andy.
91 205D-Turbo, gone but still missed
02 106D, TUD5B, gone but not really missed apart from the MPG
You can buy seperate battery clamps that can be either screwed or solder back onto the original cables. PSA were know for fitting duff cables to their batteries. I have replaced a few clamps over the years.