If the battery is not charging after checking the voltage regulator and carbon brushes, it is advisable to have your direct current or alternating current dynamo checked on a dynamo test bench to find out what has become defective.

If the result is negative, you have the choice between overhauling or replacing. Overhauling retains the original part, but this often comes with a hefty price tag. Replacement with a factory-new unit is often more cost-effective and ensures you receive a 100% new part.