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https://www.phonak.com/en-us/hearing-devices/hearing-aids/ly... I find this egregious: "Lyric requires no maintenance or batteries to change or charge." and again "No batteries or charging needed."

But you have two tiny potential bombs inserted into your head.

If it doesn't get charged then I doubt it has a lithium ion battery. But i can't find any specific information.

> Better yet, Lyric requires no maintenance or batteries to change or charge.

> The battery is specifically designed to withstand the deep ear environment for months at a time

Have Phonak/Lyric achieved the impossible building a battery that never runs out of power? How does that work?

Looks like rather than replacing or recharging the battery, you have the entire thing removed and a new one placed.