power one’s commitment to research and development has been the cornerstone of VARTA Microbattery’s 125 years of success. This commitment has resulted in the best power one hearing aid batteries of all times. Available in the standard version and mercury free option, both lines combine the highest quality materials for the utmost product reliability. The power one mercury free “wireless approved” hearing aid batteries offer maximum energy density that especially meets the requirements of the new generation of hearing instruments. The power one mercury free battery performance is one that you and your customers can trust.