Operational Voltage (3 – 5.5 Volts): The INA219 operates between 3 to 5.5 volts, increasing its compatibility with various systems running at either 3.3V or 5V logic level. This feature enhances the module’s flexibility in diverse circuit designs.

Bus Voltage Range (0 – 26 Volts): The INA219 can monitor power supplies within 0 to 26 volts range. This broad range makes the module applicable to low-voltage logic circuits and higher-voltage power supplies.

Current Sensing Range (±3.2A with ±0.8mA resolution): The INA219 can monitor a current range of ±3.2A with a precise resolution of ±0.8mA. This capacity makes it suitable for various applications including power management, battery chargers, and DC motor control, enabling accurate tracking and control of power consumption.

0.1 ohm 1% 2W Current Sense Resistor: The module uses a 0.1-ohm shunt resistor with a 1% tolerance and 2W power rating for current sensing. The low resistance value minimizes power loss, while the 1% tolerance ensures measurement accuracy. The 2W power rating indicates its robustness, supporting current measurements up to ±3.2A.

Adafruit INA219

INA219 Zerø-Drift, Bidirectional Current/Power Monitor With I2C Interface - Texas Instruments [EN]