BQ76942, which supports 3-series to 10-series battery cells, and BQ76952, which supports 3-series to 16-series battery cells, are battery monitor and protector devices used in battery packs. Those two devices integrate a one-time-programmable (OTP) memory. Writing initialize settings into OTP helps save initialize configuration before system power up. Users need to write OTP on the product line. This application note introduces a step-by-step hardware setup and software process which helps users save time to complete OTP configuration.