Frequently Asked Questions

Following Q&A will teach you everything you wanted to know about batteries and how to optimize the usage.

Always remove batteries from devices you don’t use for longer periods, from devices connected to AC power and when batteries are empty.
You can, but they’ll perform best in medium- to high-drain devices.
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Panasonic zinc air batteries have been specifically designed for hearing aids, other batteries may not perform as well.
In appliances without a charging function, yes. In appliances that do have a charging function, be sure to check whether the function was specifically designed for Ni-MH. If not, it’s best not to use Ni-MH batteries.
You can download the manuals of our chargers on our website.
In general, appliances are designed to match the characteristics of dry batteries and to work within the voltage range of 1.5V to 0.9V. Thanks to this characteristic, Ni-MH rechargeable batteries can be used in appliances which require alkaline batteries, even with lower initial voltage. 
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.
Batteries in smart keys usually last between 1 to 2 years. Unusually short battery life may be caused by electromagnetic interference. Avoid keeping your smart key near other electronic devices such as phones, laptops and other screens.

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