Battery performance greatly depends on the device and on the conditions.

They do. We guarantuee performance for up to three years after production. After this we cannot guarantee the battery will perform as well as it’s supposed to.

Assuming your device isn’t faulty, causes may lie in either improper contact with the terminal or in the batteries themselves.

Zinc air battery are different from other batteries. They do not contain active materials in their positive electrode. This type of battery reacts with air - so it’s important to remove the tag before inserting the battery into your device. They provide a current of 1.4V if used correctly.

Please store your batteries in dry conditions, and avoid high temperatures and direct sunlight.

Batteries will become unfit to use after they’ve been in the water. Usually however, a battery won’t leak inside the washing machine thanks to the safety valve - so chances of your textile being affected are minimal.

Don’t charge an alkaline or zinc-carbon battery, they are not designed to be charged.

At this point Panasonic does not produce AAAA or LR61 batteries.

Due to chemical reactions inside most batteries, the stored charge of the batteries is reduced little by little. This phenomenon is called self-discharge.

Panasonic hearing aid batteries, or zinc air batteries, react with air. As soon as you pull off the seal, the battery will be able to release energy. Be sure to let the battery breathe for a few minutes before inserting it into your device.