Knowing how long the battery charge of your laptop lasts, will allow you to calculate the time that you can work continuously without having to connect your equipment to an outlet. We will explain some mechanisms for you to obtain an accurate measurement of your battery life. With these simple steps, you can work without worry.
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Before you begin, make sure your power plan options are appropriate for the way you want it to run normally. Windows It works hard to provide a long battery life with the default settings, but if you decide to adjust it for your particular use, you can.
In Windows 7 and later versions, the tool we need is Energy options. Here, you can find it at Windows 10:
Step 1: right click on the battery icon next to the system clock.
Step 2: Choose Energy options in the pop-up menu or you can also find it the hard way by following this route: Control Panel> Hardware and Sound> Power Options.
Step 3: with the window Energy options open, you may see two plans by default: Balanced Y Energy saving. Choose Change plan settings next to either to adjust it, or click Create a power plan, found in the menu on the left to generate a new one.
This option allows you to modify between configurations at any time. The next menu, shown below, gives you basic options of what happens if your laptop is plugged in or if it runs on battery power; we are interested in the last one. You can select when the screen should turn off automatically or when the computer turns off after a certain period of inactivity.
Step 4: If you want more customization, please click the blue link Change advanced power settings.
Step 5: when the new window opens, click to expand the section Drums at the bottom, as shown above. This allows you to adjust when various alerts and changes occur.
Step 6: when you’re done, click To accept.
Of course, the easiest way to measure battery life is to time yourself while using your laptop. Windows’ built-in battery estimation isn’t much help, it’s just a guess, and it will go up and down as you use your machine in different ways.
The simplest solution is to use a stopwatch app (the default Clock app in Android and iOS includes one), make sure your laptop has a full battery. Stop the clock every time you turn off the laptop or put it to sleep, and check how long it lasts.
Use your laptop as you do most often during a full work day. You are not looking to verify the theoretical maximum battery life; you need to have a useful metric of how long it will last while in service.
For best results, run multiple tests and take an average. Doing these calculations provides an excellent basic number of how long your laptop will last under typical use.
You can test in multiple conditions, for example, playing a looping video or playing a demanding game. In case you are not actively using your laptop while testing, be sure to set the parameter Lay off on Never, both for the screen and for the computer, within the options of Setting (By clicking the Start button and selecting the gear) Start / stop and suspend.
Windows 8 and Windows 10 have a built-in battery meter that most users are unaware of: the Energy Efficiency Diagnostic Report tool. This utility provides you with data on the exact times since your laptop was turned on and off. To run it, you must open the symbol of the system or Windows PowerShell as Administrator.
Step 1: write “cmd” on the search bar Windows.
Step 2: click with the right click on command prompt that appears in the results and selects Execute as an administrator from the pop-up menu. Alternatively, you can click with the right click Start and select Windows PowerShell (Administrator) in the Advanced User Menu.
Step 3: type exactly the following command and press the key Enter:
powercfg / batteryreport / output “C: battery.html”
Note that you don’t necessarily need the / output (command output) part, it just avoids looking in the default folder of Windows / System32 to find the results. Also, you can change the output location to anywhere you want on the computer.
Step 4– Click the folder icon on the taskbar to open File Explorer. It should open in My Computer by default.
Step 5: According to the command executed above, do double click on the battery.html file stored in your “C:” drive to open the results in your default browser.
This report is invaluable. It gives you all kinds of important hardware information about your laptop battery (or batteries, if your device has more than one). You can go through a ton of data here, but what you are looking for is Recent use.
This data provides an accurate record of the battery level and the hours it was logged, including a new entry each time the power cord is plugged in, or when the computer is turned off or put to sleep.
You can use these methods to get accurate battery level recordings whenever you want, it is quite useful. For an accurate overall reading, run multiple tests and take the average.
Over time, your computer’s battery will begin to lose power capacity. There’s no getting around it, it’s just an unfortunate physical limitation of the technology. In addition to the general measurement, you can consult the section Ability in the power report to see the exact milliwatt-hours (mWh) in different percentages.
Compare these values with the official capacity in the battery manufacturer’s specifications to see if you need to replace it, or your entire computer if the battery is sealed. If the values match the recall specifications, it would be a great time to check if your battery is still under warranty.
If you want to do even more to measure battery life, there are third-party programs that will automate the process. These will be accurate measurements under stringent conditions and will allow you to do this compared to other hardware that has performed an identical test.
However, it is generally less helpful than the more personal methods mentioned above. The app Battery Optimizer from ReviverSoft is a good choice for beginners, and BatteryMon from Passmark provides you with an informative diagnosis of the status of your battery.
It is very important to remember that these third-party testing options are often not as efficient as some of the other testing options mentioned above.