3/22/2023 0 Comments Laptop battery tracker![]() ![]() ![]() Note: Manually turning off your Bluetooth no longer significantly improves battery life as much as it did around the era of Bluetooth 2.0. Also, a pair of earphones will usually provide much better sound quality than most laptop speakers, letting you enjoy a better audio experience. Additionally, built-in speakers use noticeably more battery than a pair of headphones or earphones because the speakers have to physically displace more air. Even though actively using Bluetooth or 2.4GHz peripherals does still drain the battery, we expect the laptop to last longer compared to when using hard-wired ones. Another alternative is to use a wireless keyboard or mouse, which is powered by its own battery. If you do use a wired keyboard or mouse, turning off its lighting can yield a small but noticeable increase in battery life. While this amount of power may appear small, it can have a noticeable impact on the battery over time, especially if you expect to use your laptop unplugged for many hours. Use the built-in keyboard and touchpad. This may disappoint some typists and mice enthusiasts, but a wired keyboard or mouse still needs power delivered via USB to function.Turn off backlighting effects. This includes RGB- or white-backlit keyboards, but can also apply to other decorative lighting.Keeping it around 50% (or even lower for laptops with high maximum brightness displays) is a good balance between battery life and usability. Reduce your screen brightness to 50% or lower. As the brightness increases, the display needs to use more and more power to increase the perceived brightness by the same amount.That said, there are still measures you can take in nearly all situations to help increase your battery life, regardless of the workloads you need to run. For example, even though it technically might be possible to watch an entire season of a TV show on a single full charge, you'd need to dim the screen to its lowest setting and turn your speakers off, which would result in a less than ideal viewing experience. When using your laptop on the go, you have to balance the performance you need with the battery life you want. These include word processing and spreadsheets, as well as most idle tasks like reading articles. Alongside general web browsing, we also expect this result to closely reflect workloads that include using a single application at a time to run light productivity tasks. This test affects the total battery score the most because we expect it to reflect most people's workloads. Once we power the laptop back on, we record the elapsed time until shutoff that was recorded by the script. We run the test until the laptop dies or goes into emergency shutoff mode. These include, Wikipedia, and NPR, as well as an embedded 6-minute YouTube video that takes up the entire browser window. We turn the Wi-Fi on and Bluetooth off and run an automatic script that simulates viewing and scrolling through various web pages. We maximize the application, so it takes up the entire screen, which is different from fullscreening the entire browser using the F11 key. We test how long a fully charged battery lasts during typical web browsing, using the most popular browser for each corresponding OS. We only unplug it once we begin each discharge test. Depending on the workload being tested, we use different settings for each operating system: We keep the laptop plugged in using its included power adapter and ensure it's at 100% battery before performing our tests. Chrome OS: No settings need to be changed.macOS: Automatic graphics switching "On" Put hard disks to sleep when possible "On" Optimize video streaming while on battery power "Off".The power mode and other optimizations differ depending on the OS: We turn off all keyboard and RGB backlighting, mute the speakers, and close all other background apps and processes except those necessary for the laptop to function. For all the battery discharge tests, regardless of the operating system, we set the display to its native resolution and highest available refresh rate, calibrate its brightness to 200cd/m², and set it to never sleep or dim. We perform all our battery discharge and charge tests in a small, temperature-controlled room set to 22☌ (71.6☏), with a tolerance of ☐.5☌. Some settings remain the same among all our tests, but others have to be changed depending on the workload type and operating system. We run two different types of tests to score how well the battery performs: discharge tests (how long the battery lasts) with different types of workloads, and a charge test (how long it takes the laptop to reach a full charge).
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