M5StickC not powering on after charging, Warning 22 when USB connected

[ren072]

Hi,
I've not used my StickC for several months.
I've charged it for a couple of hours, but it doesn't power on.
I've been able to burn the M5StickC Factory Test.
It still can't power on, unless leave the USB cable connected. The screen only display a Warning 22 error.
I've tried to power it with g0 to 3.3V connected, but without succes: https://community.m5stack.com/topic/1106/m5-stick-c-wont-turn-on-am-i-missing-something/4
Any idea how to solve this?
Thanks

[teastain]

@ren072 Sounds like the battery has expired, this is an older StickC!
It happened to me and later on a StickC Plus.

[hacxx]

It sounds like the battery may be dead or disconnected internally. Warning 22 usually points to a battery issue. Since it powers on with USB but not on its own, try opening the case carefully and checking the battery connection. If that looks fine, the battery might need replacing. You could also try a full reset by holding the power button for 6–10 seconds.