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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@fishhf
Just uploaded a video of resetting it and leaving it alone without changing any settings after charged for about an hour.
It takes about 3 hours to go from ~3.80v to ~3.35v.
I've added chapters in the video description, so don't use the embedded viewer.
https://www.youtube.com/watch?v=luqHR-pWiR0