For a 12 V or 24 V solar system, an off-grid battery, or a DC distribution panel, watching the instantaneous voltage tells only part of the story. You may also want to know the current passing through a load, its…

Build a reliable ESP32 LiPo monitor with the MAX17043 fuel gauge and ESPHome. Safe 3.3 V I²C wiring, battery percentage, Home Assistant alerts and deep-sleep best practices.

Monitor bidirectional battery current, voltage, power, amp-hours and watt-hours with an INA228, ESP32, ESPHome and Home Assistant. Includes safe shunt wiring and counter-reset guidance.