Hi! I’ve been using both the XIAO ESP32S3 and XIAO BLE succesfully in some projects. I’ve used Li-Ion batteries, the flat ones, with no issues. I was thinking of start using the 18650 because of their form factor. I wanted to know:
Can they power the XIAO?
Can they be charged by the BMS in these modules?
thx!
So you don’t specify which Xiao you are asking about but Generally “YES” they work and can be charged. Some Xiao’s have different Higher/Lower charge current so consult the WiKi on yours.
Check the search there are some posts about there use and care.
HTH
GL PJ
PJ 
