IoT based Lithium Battery Monitoring System using ESP8266
Portable Power- 18650 Battery Shield for Raspberry Pi & Arduino
INA3221 Triple Channel Module High Side Measurement Shunt Current Bus Voltage Monitor with I2C and SMBUS Compatible Interface|Instrument Parts & Accessories| - AliExpress
I2C-Controlled Li-Ion Power Management IC with Integrated Power Devices Charges High Capacity Batteries from Any 5V Source While Keeping Cool | Analog Devices
Daciye Raspberry Pi Pico UPS Module Uninterruptible 5V I2C Interface Power Supply - Walmart.com