Phonak Q50 - Changing the Battery

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4. Using the hearing aid
Step 10. Changing the battery
Your hearing aid will indicate with a double beep, that
the battery soon needs to be changed. You typically have
up to 30 minutes to change the battery, however this can
dier and may be considerably shorter. We recommend
that you always keep a spare battery on hand.
I To estimate the average battery life, we recommend
you track the time frame from when you start
using your haring aid to when you hear the end of
life battery tones.