Javascript Battery API returning Infinite discharging time

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It is the wish of every smartphone user if it could come true but unfortunatly this doesn't represent reality. Meanwhile... I'm getting that the battery.dischargingTime of my android phone is Inifinite...! (and I wish it was, but it isn't)

This is my code:

if(navigator.getBattery){
    var battery = navigator.getBattery().then(function(battery){
        var level = battery.level;
        var rest = battery.dischargingTime;
    });
}

After that, level is 0.94, this is correct, but rest is Infinite. I could understand it didn't work for my desktop computer but on mobile...! I'm using an android with Chrome 43 btw.

EDIT: I also noticed that in chrome for iPhone this is not even passing the test for the support, despite caniuse not mentioning it: http://caniuse.com/#search=battery

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deceze On BEST ANSWER

This value is Infinity if the battery is currently charging rather than discharging, or if the system is unable to report the remaining discharging time.

https://developer.mozilla.org/en-US/docs/Web/API/BatteryManager/dischargingTime

It basically says "sorry, dunno". Ignore that value as invalid and check back again later.