TI (Texas Instruments) BQ26501PWRG4 Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol) Function: Fuel, Gas Gauge/Monitor Lead Free Status / Rohs Status: Lead free / RoHS Compliant Maximum Operating Temperature: + 70 C Minimum Operating Temperature: - 20 C Mounting Style: SMD/SMT Mounting Type: Surface Mount Operating Supply Voltage: 2.6 V to 4.5 V Operating Temperature: -20?°C ~ 70?°C Package / Case: 8-TSSOP (0.173", 4.40mm Width) Product: Fuel Gauges Series: bqJUNIOR?„? Voltage - Supply: 2.6 V ~ 4.5 V