Hello,
I have been trying to get a longer battery life with the M5StickC without a power bank through USB-C. I have been trying to use the BAT and GND pins on the headers. I opened one and realized the BAT pin is soldered the positive internal 80mAh battery wire. I tried connecting an external 400mAh lipo battery, so it would be connected in parallel to the internal one and for the little I know about these batteries I though they should work, but didn't. Does anyone know what I could do to make them work?
Thank you!