nb Innisfree

I'm guessing the SG compares discharge rate and pattern with known ones from a similar type of battery, it then makes a guess at SoC, after a few charge/discharge cycles it makes increasingly more accurate guesses based on more comparisons. A simple comparison meter, simple in principle but complex to achieve 🤣

SmartGauge is designed to inform those who can't be arsed to use voltmeters etc and have more important things to do like drinking beer, an easy to use device to able see at a glance what the SoC is and therefore know when to start charging, a clever but simple fit and forget device, though I doubt Gibbo would say it was easy or simple to design 🤣