The Maxim Integrated DS2782G+T&R is a single-cell battery monitor designed for Lithium Ion/Polymer packs. It reports voltage, current, and accumulated charge over the I²C bus to a host microcontroller.
The I²C interface keeps the bus wiring simple: two lines to the host MCU, no extra level shifters if the host runs at the same logic voltage. Operating temperature from -20°C to 70°C covers indoor and most consumer environments but excludes automotive cabin or outdoor telecom enclosures where ambient can push past 70°C.
For dual-sourcing or supply resilience, no official second source is listed in the record, so plan for single-sourced BOM lines unless you qualify an alternate independently.