Request for hardware startup: a battery charge level indicator part under $5 (for both rechargeable sand non). and I had a brief slack discussion (see screenshots) on why this is a hard problem that’s important and useful to solve. Any bright ideas?
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So is the idea to have an external battery level device (that perhaps know the type of device, or more you're wondering why they don't do this? I'm unsure who to add on this, but , , , might know.
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Not external. A part that can be integrated into any product design that outputs to an led or something.

