Suggestions for decreasing the size of Free Pro.

Feb 07,2022
U695385420
Feb 07,2022 at 9:52 am
Feb 07,2022 at 9:52 am

Hi! 

I'm a engineering student in the field of robotics and signalprocessing, and are in general very satisfied with my pair of Free Pro's. But I  wanted to check the build up of the earbuds so I opened one as I was curious of possibilites for a even more compact design. Not a big suprise, but the battery is taking up a lot of the space, and is what makes the buds so thick. Having special interest in the field I checked up on  possibilities to flatten the design. I came over company making "printed" solid-state lithium batteries for PCB design named Ensurge Micropower. Is this something you have been considering for the next iteration to minimizing the size and at the same time increasing the listening time?

Best wishes and congrats on the great work so far!

Robin  

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Sean Jay

Staff Member

Feb 08,2022 at 9:0 am
Feb 08,2022 at 9:0 am

Maybe what you said can be realized. I don't know, but the cost may increase a lot, and it will be more expensivešŸ˜”.

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U695385420
Feb 08,2022 at 8:52 pm
Feb 08,2022 at 8:52 pm
Sean Jay said:

Maybe what you said can be realized. I don't know, but the cost may increase a lot, and it will be more expensivešŸ˜”.

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That makes no sense. As there is no prices available online and a PCB mounted battery would simplify production, which cuts manufacturing time and hence possibly cost. Even a more expensive battery could end up cutting costs due to increased efficency in manufacturing. A excellent  example of that is the Easee home charging stations who have a unique set-up for the PCB, where components are assigned front/back-side to decrease production time and  increace efficiency. 

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Sean Jay

Staff Member

Feb 11,2022 at 1:25 am
Feb 11,2022 at 1:25 am
U695385420 said:

That makes no sense. As there is no prices available online and a PCB mounted battery would simplify production, which cuts manufacturing time and hence possibly cost. Even a more expensive battery could end up cutting costs due to increased efficency in manufacturing. A excellent  example of that is the Easee home charging stations who have a unique set-up for the PCB, where components are assigned front/back-side to decrease production time and  increace efficiency. 

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As you know, Bluetooth and wireless are RF circuits, and the battery installed on the PCB may cause greater interference, which increases the difficulty of making. And in the process of production and testing, the disassembly of the battery also needs to be considered. Maybe,  is just my point of this. 

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U695385420
Feb 13,2022 at 5:59 pm
Feb 13,2022 at 5:59 pm
Sean Jay said:

As you know, Bluetooth and wireless are RF circuits, and the battery installed on the PCB may cause greater interference, which increases the difficulty of making. And in the process of production and testing, the disassembly of the battery also needs to be considered. Maybe,  is just my point of this. 

Click for original message

I don't think the other points are valid, but I do see the disassembly issue. Disassembly and recycling is a field I'm not having any competence in so can't  weigh in on any aspect, but I agree it's an important point considering the value and enviromental aspect. 

I did find this post from one of the manufacturer about the micro-battery talking about "hearing aids, IoT, medical wearables and true wireless earbuds." ( https://ensurge.com/blog-why-the-form-factor-of-a-microbattery-matters/ ). As they have medical wearables as customers I doubt the noise would be a issue. Might be a problem with distortian in real high-end hifi earphones, but tbh that's not really the end of the specter earfun is on. Again that's also purely hypothetical. 

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