TI (Texas Instruments) BQ27520YZFR-G1 Battery Chemistry: Lithium-Ion (Li-Ion) Function: Fuel, Gas Gauge/Monitor Lead Free Status / Rohs Status: Lead free / RoHS Compliant Mounting Type: Surface Mount Operating Temperature: -40?°C ~ 85?°C Package / Case: 15-UFBGA, DSBGA Series: Impedance Track?„? Voltage - Supply: 2.7 V ~ 4.5 V