me2,
As shown in the link below, the battery is charged at a charging current of 1000/2.7k = 370mA, set at 2k7.
‘Charging characteristics of XIAO_nRF52840 and XIAO_ESP32C3’
Since I can’t get the datasheet for the ETA4054, I thought about it while looking at the datasheet for the MCP73831, which seems to be almost equivalent.
In the SupplyCurrent(ChargeComplete, NoBattery) section, there is a description of Typ.53uA, Max.200uA.