It's Not Just You – Your Headphone Batteries Really Have Gotten Worse
But if you think that the devices you use to hear them with have also become worse since you bought them, science says you might be correct on that front, too.
In a recent paper published in the journal Advanced Materials, researchers looked at how wireless headphone battery life declines after leaving the box, by using imaging technology, infrared scanners and even X-rays.
They wanted to find out whether headphones which last for eight hours when they were new can only run for, say, six hours after a couple of years without needing a charging break.
Our suspicions aren't unfounded, it seems ― the longer we own our battery-powered earphones, the shorter the battery life seems to get.
The scientists found that little structures in earphones like Bluetooth antennae, microphones and circuit boards can make the battery's environment a little taxing (for instance, it can warm up one side of the battery but not the other).
Even temperature changes in our own lives, like going for a walk in the cold with our earphones in, risk slightly damaging the battery, the researchers add.
For that reason, the study says: 'Conventional battery failure analysis in controlled lab settings may not capture the complex interactions and environmental factors encountered in real-world, in-device operating conditions.'
In other words, the batteries in your earphones weren't tested for real-life conditions as they actually play out.
It's a big ask, which is why the University of Texas at Austin team used some of the world's most advanced X-rays for the job.
They worked with groups from SLAC National Accelerator Laboratory's Stanford Synchrotron Radiation Lightsource, Brookhaven National Laboratory's National Synchrotron Light Source II, Argonne National Laboratory's Advanced Photon Source, and the European Synchrotron Radiation Facility (ESRF) to get their data, Science Direct reports.
Physicist Xiaojing Huang, who worked in the Brookhaven lab that collaborated with these researchers, told the publication: 'Most of the time, in the lab, we're looking at either pristine and stable conditions or extremes.'
'As we discover and develop new types of batteries, we must understand the differences between lab conditions and the unpredictability of the real world and react accordingly. X-ray imaging can offer valuable insights for this.'
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Tom's Guide
13 hours ago
- Tom's Guide
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Sony's latest ANC headphones are a good pair of headphones, with some key improvements over the previous model under the hood. But how do they square up against their noise-canceling nemesis? The Bose QuietComfort Ultra Headphones are the best way to block out noise, period. But how do they fare when you stack them up against Sony's newest set of cans? Let's find out. The Sony WH-1000XM6 launched with a bang in 2025 and we reviewed them favorably, highlighting their new sound signature and improved noise canceling. They have a new, if un-innovative, look, and a brand-new hard case to protect them in your bag. Yet, they still have to fend off their long-standing Bose rivals: The QuietComfort Ultra Headphones come with a super comfortable fit and better noise canceling, and are ready for the fight. But is that enough to sink Sony's flagship? To find out, I've organized a sunset duel. I've been using both headphones for the last month to work out which ones you should spend your hard-earned dollars on. The fight this time around is tricky for both of our entrants, so let's put them out of their misery. Sony WH-1000XM6 Bose QuietComfort Ultra Headphones Price $449 / £399 / AU$699 $429 / £449 / AU$645 Colors Black; Silver; Midnight Blue Lunar Blue; Deep Plum; White Smoke; Black Size Not specified Not specified Weight 8.9 ounces 8.8 ounces Battery life (rated) Up to 40 hours Up to 24 hours Connectivity Bluetooth 5.3 with SBC, AAC and LDAC support Bluetooth 5.3 with SBC, AAC and LDAC, aptX HD support support Special features Adaptive ANC, Ambient Sound Mode, DSEE Extreme Audio, Bluetooth multipoint, customizable sound, quick charge, passive mode, 360 Reality Audio ANC, Immersive Audio, Bluetooth multipoint, customizable EQ, quick charge We don't need to spend much time on this point. Both headphones will set you back between $428 and $449, depending on which sales you're looking at. That's not a small price for a pair of headphones, and marks what looks to be the new launch price point of flagship headphones from now. At $449, both models $150 cheaper than the Apple AirPods Max, and the same price as our pick for the best wireless headphones, the Bowers & Wilkins PX7 S3. Although the 1000XM6 are currently cheaper, the Bose headphones have a lower price floor. They've been on the market for a longer time, and we've seen their price drop significantly during deal events. You can save $20 on the Sony by buying them today, or you can wait for Black Friday or Prime Day and pick up the Bose headphones at two-thirds the price. The XM6 are a well-built pair of headphones, with compact earcups and a folding hinge so that they can fold up and fit into a case. The headband has also been widened for comfort reasons (we'll get to that), rounding out the key physical differences between the old and new models. Get instant access to breaking news, the hottest reviews, great deals and helpful tips. The case is vastly improved, however. I really like the magnetic clasp, and I've only come to like it more during my comparison period. I'm not sure about the longevity of the mechanism as of yet, but for now it's a winner. Comfort is also better, but still not perfect. I've found that the headband, while wider, still presses on pressure points across the top of my head. There are also bits inside the earcups that interfere with my piercings. The Sony WH-1000XM6 are not wholly uncomfortable — far from it — but they're less comfortable than their Bose rivals. Bose's headphones are not only more padded in all the right places, but also uses better foam inside to make sure that they remain comfortable for long periods of time. They're light, which can make them feel slightly cheap, but that does add to their overall comfort in the end. The Sony WH-1000XM6 are not wholly uncomfortable — far from it — but they're less comfortable than their Bose rivals. The case is much the same as the XM6 in terms of sturdiness, but it's slightly more compact. That makes it easier to pack into a bag when you're going on a trip or getting ready to go to work. The QuietComfort Ultra Headphones are a more handsome pair of headphones as well. There's more variety to the kinds of materials used here, with metal in the folding armatures making them feel better built than the flimsy feeling XM6. Overall, thanks to a more comfortable fit, better case and more interesting style, the QuietComfort Ultra take home the points for design. After a strong start for Bose in the design and price sections, the controls section is the place where Sony is going to start clawing back some crucial points. The controls you'll find in the Bose QuietComfort Ultra headphones aren't really all that good. I don't like the inaccurate touch volume slider, and the multifunction button that does almost everything else is a pain to use. The two buttons on headphones are the same shape, only differentiated with a little bump on the Bluetooth pairing button. I've found skipping accidentally and initiating pairing mode unintentionally is far too easy. I don't like touch controls, but the gesture based controls on the XM6 are better than those found on the QuietComfort Ultra Headphones. The touch pads on either earcup can be swiped for volume and skip, and then tapped for play/pause. I still don't like how moving my hair can be mistaken for a command, or how I can accidentally pause when I want to turn the volume up, but there are some redeeming factors. For example, the power button and ANC button are very easy to tell apart — the power button is round, and the ANC button is long. Simple and easy to use. The Sony WH-1000XM6 take the round when it comes to controls. The Sony WH-1000XM6 have an updated sound profile, and while it's not my favorite, I do prefer to the way that to the Bose sound. Sony has focused more on the vocals of your music this time around, and we've ended up with a pair of headphones with some top-notch vocal clarity. Unfortunately, I've found that means that soundstage has taken a hit. The XM5 had a very wide soundstage, and that's taken a back seat with the XM6. The new model is slightly more restricted, and spatial imaging (where everything is on the soundstage) isn't as well defined. Sony's bass-heavy sound isn't horrible, but I wish it were a little bit less in-your-face. I've found dialing it back in Sony's very solid EQ helps a bunch, but it's a shame that I have to. To be clear: The Sony WH-1000XM6 sound very good, but the likes of the Bowers & Wilkins PX7 S3 have shown what wireless over-ears are really capable of. The Bose straight-up sound worse than the Sony WH-1000XM6. They're bassier and warmer, and you lose some top-end detail and presence. There are going to be some people who are fans of their looser attention to detail and sloppier low-end, but the Sony sound noticeably better. You can EQ the Bose slightly with a three-band adjuster, but they never quite manage to sound as good as Sony's headphones — let alone other headphones you can pick up for the price. Both sets of headphones have good apps and well-rounded feature sets that have their fans and detractors. Both sets of headphones have good apps and well-rounded feature sets that have their fans and detractors. We'll start with the XM6. The Sony Sound app has been recently re-done, and it works very well. It can be slightly confusing for first-time users with some of the features hidden away in separate sub-menus, but once you know where everything is you'll be navigating the headphones' multiple features with aplomb. It's in the app that you'll find the noise-canceling modes. I don't really get these — I just leave my ANC on max level when I want it. Transparency is the one mode I do use frequently, however, as well as the 'off' setting, so that I can save a little battery. Inside the app there's also the EQ, and it's very good. Plenty of bands for adjustment make it very easy to dial the sound in exactly as you want it. Spatial audio is here as well, and it's much better than Bose's option. It's similar to Apple's headtracked Dolby Atmos, only it's built for Amazon Music Unlimited as opposed to Apple Music. Bose's app is also very easy to use, I find. Everything is better laid out than Sony's app, but there are fewer options for customizing your headphones. I don't miss the multi-step ANC adjustment, and I like how you can turn the ANC to transparency and back. Not off, however, for Bose does not believe in turning ANC off. To each their own, but it would be nice to have the option to save some battery life. EQ is good, although not as in-depth as Sony. It gives you ample opportunity to change the sound of your headphones in the long run, however. Giving you ample opportunity to make use of the 'off' slider is Bose's version of spatial audio. It's an in-house 'enhancement' of whatever music the headphones are playing, but I find it just makes music sound anemic. It's the best of these in-house systems, also found in the likes of the Marshall Monitor III and the Nothing Headphone (1), but it's still better left in the 'off' position. Perhaps the most important part of the whole competition here — has Sony finally caught up to the might of the Bose noise-canceling machine? Short answer: No. The longer answer is that Sony's noise canceling is better than that found on the older XM5. Thanks to a new chip and some more clever algorithm changes, the ANC handles some annoying noises better than before. 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Yahoo
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