ReSound ONE RT988-DWC User Manual page 10

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Batteries are harmful for the environment. Therefore, never try to burn them – dispose of your used
rechargeable hearing aids according to your country's regulations or return them to your hearing care
professional.
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For safety reasons, use only the charger provided with your hearing aid.
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When traveling, consult your airline about any rules for transportation of your hearing aid and charger.
Low battery alert
When the batteries are low on power, the volume in your hearing aids will momentarily reduce and a melody will
play every 15 minutes until there is no more power - then your hearing aids will turn off.
10 Charging your hearing aids