In ZIYUN,Gravity: I2C 3.7V Li Battery Fuel Gauge,employs Gravity I2C interface,ultra-low operating current,real-time tracking of the relative state of charge (SOC),Low battery alarm,Reverse protection : Amazon.co.uk: DIY & Tools
MAX17043 LiPo Fuel Gauge connects to Arduino via I2C #1 - YouTube
BQ27530EVM Evaluation board | TI.com
Gravity: I2C 3.7V Li Battery Fuel Gauge - DFRobot
Portable Power- 18650 Battery Shield for Raspberry Pi & Arduino
Gravity: I2C 3.7V Li Battery Fuel Gauge - DFRobot
Gravity: I2C 3.7V Li Battery Fuel Gauge - DFRobot
Interfacing MAX17043 Lithium Battery Fuel Gauge IC with Arduino to measure State of Charge (SOC) - YouTube