XIAO ESP32C3 Battery ussage

I’ve received 4 of these boards. (1) doesn’t work at all with the battery, but charges, (1) charges ok and runs off the battery, but consumes 60ma from the charging line continuously; runs warm, even off battery; (2) work perfectly, charging and low deep sleep current.
All the boards are running a sensor script using espnow hourly updates with deep sleep in between.
I love these boards and ordered 3 more. I’m hoping my yield of good boards increases!
UPDATE: Just for yucks, I disabled Serial (as previously suggested) when on battery alone and the deep sleep current dropped to normal. I’m back in business! 100%