m5paper charging issues?



  • I plug m5paper into a USB-C PD charger, but I seem to have intermittent issues. It won't charge, or it won't fully charge. Has anyone else had this issue? No charging indicator appears when it is plugged in. Also, The voltage jumps to almost full sometimes when plugged in, so the battery reports 100% charged.

    Basically, I can't figure out how to charge this thing.



  • Hello @gcormier

    Unfortunately M5Paper doesn't have a charging indicator (eg. LED) and as you already noticed yourself the reported voltage is of almost no use either.

    The thing is that the charger IC used in M5Paper has two outputs (charging and standby) which would indicate if the battery is being charged or not. Sadly though the M5Stack engineers decided to not use those outputs.

    I did some measurements with my M5Paper and on average it did not take more than 3 hours to fully charge the battery.

    So I suggest you keep it charging for at least 3 hours and it should be full.

    Thanks
    Felix