My M600 doesn't charge, what can I do?
If your M600 doesn't charge properly, it could be because the charging area on the back of the product is not clean enough.
Gently remove any dust, hair or dirt accumulated on the charging pins. Use a dry cleaning cloth—something you'd use to clean glasses. You can also use, for example, a toothbrush to reach all that hard-to-remove dirt in the cavity. Do NOT use alcohol, cleaning chemicals, or any abrasive material, such as steel wool.