Hi, I am using Xiao BLE Sense board with 1x Li Ion 18650 but the board is not power up. I am connecting battery from BAT+/- pin. The unit is fine with USB power. Does anyone has an issue with it or I am doing something wrong? Thanks in advance. Best regards, Kyi Zaw Win

Thanks for the prompt reply. I just realized that powering from BAT+/- will have no 5V which make kinda sense that there is no DC-DC converter onboard. The chip is running. Thanks!