TI (Texas Instruments) BQ2057SNTRG4 Battery Type: Li-Ion, Li-Pol Lead Free Status / Rohs Status: Lead free / RoHS Compliant Maximum Operating Temperature: + 70 C Minimum Operating Temperature: - 20 C Mounting Style: SMD/SMT Operating Supply Voltage: 18 V Output Current: 2000 mA Output Voltage: 4.1 V Package / Case: SOIC-8 Product: Charge Management Temperature Monitoring: Yes