Our Hearing Aid Batteries are easily removable from the access tab on the back – but only when you WANT to remove them; you're in control with the Energizer EZ Turn Lock package The longest-lasting zero-mercury* hearing aid batteries Energizer has ever made EZ Turn Lock design keeps unused zinc air hearing aid batteries safe and secure Our Hearing Aid Batteries are easily removable from the access tab on the back - but only when you WANT to remove them; you're in control with the Energizer EZ Turn Lock package Longer tabs clearly marked with the size and color signifying the battery type make it easy for shopping, handling and inserting these hearing aid batteries 100% recyclable packaging and zero-mercury batteries responsibly power you with less impact on the environment Perforated top lets you fold the package for easy travel and storage