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M5Stack grey core consumes 0.93 mA when powered off! #229

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@ifrew

Hi ,

I've now started building my design for people and some are reporting that the battery is flat after a few days of not using it.
It seems to vary in time but tonight I switched mine off using the 2 click method and then measured if any current was being drawn by the module. I measured 0.92mA on two different devices by grounding the wire from my proto board to the module which is connected to a battery and then using a multimeter from the battery pin on the proto board to the battery pin on the m5stack module? I wasnt expecting to see any current draw. I have read about varying issues with the Ip5306 power management chip.

I just started using the power library since I'm using a battery. I can't remember seeing this issue before and wonder if using this library changes the internal state of the ip5306 chip such that it is always drawing some current?

Has anybody else seen this or have a work around? I'm thinking of replacing the push button power switch to a mechanical switch that is connected directly to the battery feed.

Thanks for any help you can provide

cheers

Iain

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