Powering the XIAO nRF52840 via supercaps

[msfujino]

Hi NebulAle,

@NebulAle

I know the battery charge IC is set up to charge any rechargeable cells up to 3.7V. If my supercap is rated below that should I still trust it to connect the cap to the BAT pins?

The maximum output voltage of the BQ25100 charge control IC is 4.23V. Check the datasheet. Use capacitors with a minimum withstand voltage of 5V, preferably 6.3V.