Performing cubic spline interpolation

[trianglesis (Ole D)]

Oh wow, I’m just trying to find a solution for my problem here:

Battery Wh usage extrapolation/trend/projection for how many hours left

Hi Community, I was trying to find a solution to extrapolate my apartment’s power usage from the off-grid system using a utility meter that tracks the amount of energy my inverter pulls from batteries. The main idea is as follows: knowing how many kWh have been consumed already from the batteries and how fast for the time window, and how many are left (approx), I want to calculate how many hours/minutes are left for my apt to run on battery power. I already have a lot of metrics: when the…

So can it be used to calculate the approximate time left on a battery?