how-to-run-a-battery-life-report-on-your-windows-laptop

How to run a battery life report on your Windows laptop

When my editor told me about Window’s built-in battery report, my first thought was: “How have I never heard of this before? Also, that sounds pretty useful!” So I looked at the guide he sent (from Laptop Magazine) and tried it out. It ended up being just as interesting as it sounded, so I figured I’d share, in case you also haven’t come across this handy built-in tool.

Windows has been keeping track of how your laptop’s battery is doing since it was installed. The report, which you can run using just two command prompt commands, will show how many cycles you’ve used on your battery and how it’s been used in the past three days. It will also give you a picture of what Windows estimates your battery life should be versus what it actually is.

So if you’re curious about your battery status or you’ve been noticing that your battery life has been a bit of a drag lately and are wondering if it’s due to neglect or some power virus on your computer sucking back a bunch of juice, this report should let you know.

  • First, open the Command Prompt tool. To do that, you can search “CMD” from the Start menu, and click on Command Prompt to open it.
  • The report will be spit out as an HTML file, so we’ll want to make sure it’s easy to find. To do that, type in:

cd %HOMEPATH%/Desktop

  • This command simply navigates your current directory to your desktop, so when you generate the report, you can find it there.
  • To generate the report, type:

powercfg /batteryreport

  • This runs the powerconfig tool and tells it to spit out a battery report, which should now be sitting on your desktop as an HTML file.
  • Double-click the file to open it up in your browser (or it might ask you which program you want to open the file in, which would be your browser). Now you can see all of that sweet, sweet battery information.

The battery usage graph can tell you how fast your battery drains over time.

This could help you get an idea of how you use your battery or show your recent computer habits.

Seeing the design capacity estimate versus your actual time could tell you whether it’s time to replace your battery.

One caveat: my laptop is used, and as a policy, I completely nuke whatever Windows install is on any laptop I buy, overwriting it with a new one. If you’ve just bought a used laptop and want to know what state the battery is in, you’ll probably want to run this tool before wiping Windows, as it seems the cycle count only reflects what’s happened on the current Windows install. My laptop is a 2018 model, and I’m pretty sure it’s gone through more than 177 cycles since then.

Even if you’re on a newer install, you can get a general sense of the health by looking at the design capacity and then the full charge capacity to see how different they are.

If you’re an Apple user who’s feeling left out, don’t worry: macOS lets you access some battery information, too, though there isn’t as much historical data. To see it, go to the Apple menu in the top left, and click “About This Mac.” Then click the System Report button, and under Hardware, go to Power. There, you can see the cycle count of your battery, its estimated health, and all of your current power settings. To see your battery usage graphs over the past 24 hours or 10 days, go to System Preferences and then Battery.

Apple has fewer graphs built in, but you can see usage statistics in System Preferences > Battery.

next-gen-thunderbolt-could-double-speed-of-tb4,-intel-says

Next-Gen Thunderbolt Could Double Speed of TB4, Intel Says

(Image credit: Shutterstock)

Thunderbolt 4 is just starting to make noise in the consumer space, but, of course, the folks behind the technology are already looking toward the next generation. This week, executives from Intel stopped by The Tom’s Hardware Show to discuss Thunderbolt and what its next form could look like. 

While celebrating Thunderbolt’s 10th birthday, Ben Hacker, Intel’s director of I/O strategy in the Client Connectivity Division, explained that the development of Thunderbolt 4’s successor is already in place with sights set on higher speed.

“What I think we’re pretty confident of is for at least another speed bump somewhere, and who knows exactly what that is, but call it roughly a doubling,” Hacker said on The Tom’s Hardware Show. 

Thunderbolt 4’s max bandwidth is 40 Gbps, allowing it to support up to two 4K resolution displays at 60 Hz refresh rates or even an 8K one at 60 Hz. Increasing the bandwidth would bring support for even higher resolutions and refresh rates. 

Hacker also pointed toward the need for more bandwidth for concurrent workflows, like editing data on a high-resolution screen, and SSDs as drivers for more bandwidth. 

“Today our data path bandwidth within Thunderbolt 4 is kind of aligned to like a PCIe Gen 3×4 performance, and for some of our storage applications, you’re seeing storage in that kind of form factor already doubling in speed,” Hacker said. 

“There’s already a need for kind of high-performance storage for, maybe, NVMe SSDs or desktop raid arrays that are going to be able to consume more than the 40 gigabits of bandwidth or just under 40 that we can provide today.” 

Backward compatibility is also important for the next generation of Thunderbolt. Intel notably shared the Thunderbolt protocol for what is now known as USB4

“We started first with that connector and cable convergence, and then we have the architectural convergence [with USB4],” Jason Ziller, Intel’s general manager of the Client Connectivity Division, said. “As we move forward, as USB4 evolves, we’ll continue to be converged on those elements of it. But we’ll continue to provide features and capabilities above that or just the optional features in the USB spec that we make required because we know computer users want them.”

The next version of Thunderbolt will presumably be called Thunderbolt 5, but Ziller said they don’t know what the branding moving forward will be yet. Whatever it’s called, Intel expects next-gen Thunderbolt to continue working over USB-C. 

“I think we can definitely stay within the electrical kind of communication path and on the same connector so it’s truly a familiar, backward compatible … solution,” Hacker said.  “ … At least kind of for the next step, whenever that comes, I think we’re pretty confident that we can keep that on a kind of same mechanical interface, same connector, roughly the same topology.”

Of course, we’re still years away from Thunderbolt 5 (or whatever it ends up being called) striking. In the more immediate future, development is in the works for more Thunderbolt 4 accessories, including docks in different sizes and shapes and docks that don’t require their own power adapter and instead uses a laptop’s USB-C charger. 

And for those with the need, Thunderbolt 4 cables up to 50m (164 feet) long should be available around next year.

“We had in [the] previous generation optical cables up to 50m, and so we’re working on delivering that as well now,” Ziller said. 

The Tom’s Hardware Show is live every Thursday at 3 p.m. ET. You can enjoy this week’s episode via the video above, on YouTube, Facebook, Twitch or wherever you get your podcasts.