https://www.overseadia.com/en-US/detail/01e7140babc8d0231fc4c7120ab20b60 The BQ40Z50RSMR-R1 Texas Instruments Battery Management system is designed to improve your battery performance. With a package quantity of 3000, the BQ40Z50RSMR-R1 is RoHS and REACH compliant, with a Nipdau lead finish/ball material, MSL rating of Level-2-260c-1 Year, and VQFN (RSM) package with 32 pins. This device provides accurate battery monitoring and protection, which can prolong the life of your battery and prevent damage from overcharging, over-discharging, and short circuits.