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Analog Device AD7280
The AD7280A contains all the functions required for general-purpose monitoring of stacked lithium ion batteries as used in hybrid electric vehicles, battery backup applications, and power tools. The part has multiplexed cell voltage and auxiliary ADC measurement channels for up to six cells of battery management.
1-6 cells, stackable, 5.09$
Texas Instruments BQ76PL536a
The bq76PL536A is a stackable three to six series cell lithium-ion battery pack protector and analog front end (AFE) that incorporates a precision analog-to-digital converter (ADC); independent cell voltage and temperature protection; cell balancing, and a precision 5-V regulator to power user circuitry.
3-6 cells, stackable, all chemistries, SPI comm, 4.30$