I'm having a problem with my Clio 197. The "battery Low" warning keeps displaying. Having taken it to a garage, the alternator has been changed, the battery has been changed and now the power regulator (i think it's called a ucp or something?) has been changed, nothing has worked. The battery only charges when the revs are over 1500rpm, lower than that it just won't charge. I'm getting seriously worried that the costs of repair are escalating and the fault still hasn't been found. Has anybody experienced anything like this or can anybody offer a solution or advice?