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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.
@Gordon
@Chasolla yes, in 99% of cases, excessive power drain is going to be some app or setting that's been changed. Either having GPS on all the time, backlight on, or some apps which may scan constantly for bluetooth devices.