How to test the smartphone battery?

In the “what we test and score” section of our website, we presented why has developed its Battery testing protocol, and we described in general terms the kinds of tests we perform so as to score smartphone battery performance for autonomy (how long a charge lasts, a.k.a. battery life), charging (how long it takes to recharge), and efficiency (how effectively the device manages its battery during charge up and discharge). This article will take a deeper dive into some of the specifics of the equipment our engineers use and the procedures they follow for testing. We’ll be taking a look at how we test smartphone battery performance. The quality of the battery’s performance goes far beyond the battery’s size. How long a charge lasts depends on several factors, including the phone’s hardware and software; the kinds of features it has; whether it runs processes in the background, when actively used and/or when in idle mode; and of course, how much, when and in what ways people use their pho...