How to calculate Ah balance on my battery?

[tom_l]

You might want to change the method of integration to trapezoidal:

Calculating Watts / Kw and KWh

Make a template sensor for the W. You already have the equation and it’s written here enough. - platform: template sensors: power_watts: friendly_name: "Power Watts" unit_of_measurement: 'W' value_template: > {% set PF = state_attr(input_number.power_factor.state | int ) %} {% set V = state_attr('sensor.pow_voltage', 'V') %} {% set A = state_attr('sensor.measured_current', 'A') %} {{ PP * A * V }} Now, to properly cal…