For each browser, we measure the battery consumption of sequentially visiting 20 popular websites (news, e-commerce, and tech). The device under test is a Samsung Galaxy S9 (Android 9.0). This process is automated by connecting the phone to a smart power socket which our measurement tool activates as needed. Each browser is tested at the same initial battery level (80%) to eliminate the issue of variable discharging rate as the battery level drops. It follows that the results reported here are obtained while the phone under test was connected to a 5.8Ghz wifi (North American IP) and set in airplane mode.
SAFARI VS FIREFOX CPU USAGE ANDROID
We automate browser testing using the Android Debugging Bridge (ADB) over wifi to eliminate the noise caused by USB charging of the device.
SAFARI VS FIREFOX CPU USAGE SOFTWARE
From a software perspective, battery-historian is an open-source tool which allows the analysis of battery consumption using Android “bugreport” files - which aggregate data about CPU and bandwidth usage, battery statistics from the above sensors, etc. From a hardware perspective, most modern Android phones come equipped with battery sensors that can report the amount of charge (mAh) left in the battery, along with other metrics like current drawn and battery temperature. We estimate a browser’s energy consumption leveraging recent hardware and software advances in Android. When compared to various ad blocking browsers, Brave still manages to shave an extra 20% of battery savings, derived from the lower CPU consumption. In our research, we show that Brave consumes 40% less battery than popular browsers like Chrome, Edge, and Firefox, thanks to a combination of bandwidth savings and lower CPU pressure. In fact, very little is known of the additional battery cost imposed by the explosion of ads and trackers on the Web.
This time we look at a key aspect for mobile users: battery consumption.
We are continuing our series of posts evaluating Brave browser’s performance. Matteo Varvello, performance researcher at Brave, and Dr. Brave mobile users can expect up to two and a half extra hours of browsing per battery charge.
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