This is an ESP32 based development board designed around the TI family of Power Monitor IC's. Whether just doing experiments or actually monitoring batteries in an application, this board will work for you.

The PCB design supports 2 different chips from TI, the INA219 low side monitor or the TI INA226A Ultra Precise power monitor. By default this board ships with the INA226A populated.

The INA219A supports low side shunt monitoring up to a maximum voltage of 28V. The INA226A support both low and high side shunt monitoring upto a maximum of 36V. The INA226 also supports voltage monitoring of the high side voltage providing a second data point.

The PCB form factor is design to fit into an optional 83mm x 56mm IP66 waterproof plastic enclosure. The board comes populated with screw terminals and pin headers for ease of wiring.

Also available is a complete system including the Power Monitor, a IP66 case, NMEA2000 connector and a 3 pin plug cable for connection to a DC shunt.

This development board can be powered from up to 24Vdc with the integrated power supply. The integrated power supply is fused and features reverse polarity protection.

The development board can also be powered from the integrated USB-C programming port.

Features Include:

• 1 x ESP32-Wroom-N4 processor with integrated Wifi/Bluetooth
• 1 x NMEA2000/Canbus port (2 wire)
• 1 x 3 wire shunt interface
• 6 x ESP32 spare I/O on header

Sensesp V3 Application example found here