The bq2145 Smart Battery Module provides a complete solution for the design of intelligent battery packs. The bq2145 uses the SMBus protocol and supports Smart Battery Data commands in the SMB/SBD specifications. Designed for battery pack integration, the bq2145 combines the bq2945 Gas Gauge IC with a serial EEPROM on a small printed circuit board. The board includes all the necessary components to accurately monitor battery capacity and communicate critical battery parameters to the host system or battery charger. The bq2145 also includes five LEDs. The push-button switch activates the LEDs to show remaining battery capacity in 20% increments.