Yes, but he said that the mechanic tested the battery with the engine running, and it was fine. From this, we took it to mean that the mechanic put a voltmeter across the battery terminals and got a consistently high voltage reading. This piece of information was what pointed to a good charging circuit, and the possibility of a battery problem. It was only after he had fitted the new rectifier that he mentioned that they had tested the old one and got weird readings. Seems like we were trying to help with the wrong information. This is the problem, over the internet, when you can't do your own tests.
