Phonak and Unitron can work while on charger

I recently discovered that the Phonak AND unitron can work while on the charger. It couldn’t work before, probably the firmware that came update later did.

But they only work when connected to Phonak target (Phonak) and TrueFit (Unitron)

So I thought, that the hearing aid could work if connected to a power source like a clothespin and connected to a powerbank. I mentioned this as an idea because many people complain about the battery life of rechargeable hearing aids.
But then you should definitely have a laptop nearby and a hearing aid connected to phonak target/unitron truefit.

Since phonak doesn’t have such a charger, someone made a handy clip charger connected to a cable many months ago. This could be a DIY project of sorts for those who want their hearing aid to work while charging. Maybe phonak could just upgrade the firmware so it can work while charging.