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I'm looking to move past the prototype stage and bring a small, low voltage, wireless electronic project to market. (it's a musical instrument)

The prototype incorporated a Li-ion pouch cell and USB charging circuitry, but I think in a commercial product, this would come with greater liability/regulatory risk.

Am I correct in this assumption; that using Li-ion pouch would be "opening a can of worms" (and possibly make the entire commercialisation endeavour unfeasible)?

If so, would coin cells be a better route to go for as a power source (avoiding charging circuitry & more dangerous chemistry, but at the expense of power capacity and reduced usability)?

To clarify some excellent points raised in the comments: the current draw is around 12mA at 3v, and the maximum cell thickness I can accommodate is around 7.5mm.

Thanks for any advice.

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    \$\begingroup\$ Coin cells are really only designed for a few mA of current draw. How much does your circuit take? Nobody's going to buy a product that eats $10 in 2032s every hour. \$\endgroup\$
    – vir
    Commented Nov 10, 2022 at 20:11
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    \$\begingroup\$ Yes, Lipo cells involve headaches, in shipping in particular. But a great number of devices use them, simply because there are no practical alternatives that are as good when you run the numbers. \$\endgroup\$
    – Spehro 'speff' Pefhany
    Commented Nov 10, 2022 at 20:20
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    \$\begingroup\$ If weight is not a dominant issue, consider using AAA or AA cell(s). If the consumer is concerned about environmental issues, they can get rechargeable versions and aftermarket rechargers for those. Another factor: permanently installed li-poly batteries have a finite operating life. Replaceable AAA or AA's overcome this. \$\endgroup\$
    – Mark Leavitt
    Commented Nov 10, 2022 at 20:49
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    \$\begingroup\$ Without any data how your device consumes power, impossible to tell. How much current/power it takes and what voltage range it supports? Is there an average and peak consumption? \$\endgroup\$
    – Justme
    Commented Nov 10, 2022 at 20:52
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    \$\begingroup\$ You could build it with a holder for a standard Lithium cylindrical cell like an 18650 which the user could source themselves. Whatever is common in the 'vape' market. \$\endgroup\$
    – brhans
    Commented Nov 10, 2022 at 21:08

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