Does the VOLT MAX charger work with a 220-240V outlet? April 12, 2022 19:13 Updated No, a 220-240V to 110-120V converter will be needed in order to plug the hearing aid charger into a 240V outlet. Related articles What is the input voltage of the VOLT MAX charger? Which program should I use with my VOLT MAX? What is the lifespan of the rechargeable battery? How do I charge the VOLT and VOLT+? How do I charge the VOLT MAX?