TI (Texas Instruments) BQ20Z40-R1 # Series Cells: 2,3,4 Approx. Price (us$): 3.65 | 1ku Battery Capacity(max)(mah): 32000 Battery Capacity(min)(mah): 800 Communication Interface: SMBus Implementation: Pack Operating Temperature Range(c): -40 to 85 Pin/package: 20TSSOP