We’ve looked at smartphone batteries before, but that was just the raw capacity. As you well know, the size of the battery is not the only measure of how long you can go between charges. Our battery test gives a more realistic result so let’s chart that.
We suspected that with each year, the Endurance rating will grow but also that newer phones will get better Endurance per mAh. As you can see from the chart below the former is true, the latter is not.
Starting at around 40 hours between charges for a 2010 phone, the average 2017 phone can get double that. And it has been a fairly…