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Google Pixel 7 charging test: Save money with an old plug

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Robert Triggs / Android Authority

Last year’s Pixel launch seemed to promise a significant boost to the charging speeds of Google’s phones, boasting a 30W charger requirement compared to the sluggish 18W from previous years. Some sleuthing revealed that the company wasn’t being entirely honest in its representation, with the Pixel 6 capped at 21W and the 6 Pro handing in 23W of peak power. Fine, but hardly the competitive power levels that the marketing materials initially promised.

Back to the present day, the charging messaging for the Pixel 7 series is unchanged. Google recommends picking up its 30W charger for the new phones, which you still have to buy separately as the brand no longer includes a charger in the box. However, its fine print notes that real charging power requirements remain at 21W and 23W for the Pixel 7 and 7 Pro, respectively. Once again, the 30W plug requirement is seemingly overkill, and lower power alternatives will achieve the same results.

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Read moreHow to pick the right charger

We’ve taken Google’s two latest handsets down to our lab to get to grips with exactly what you need to fast charge the Pixel 7 series.

Google Pixel 7 charging test

Two things to note before looking at the numbers. First, the Pixel 7 series charges at its peak power levels when connected to a sufficiently powerful USB Power Delivery PPS plug, which Google’s official and many other third-party products support. Secondly, the handsets peak at a lower 18W-ish of power when connected to a standard USB Power Delivery charger (without PPS support), such as an older Pixel plug or the 30W Apple USB-C charger we’re using for this test. With that out of the way, let’s dive into some figures.

The data speaks for itself; there’s not a huge amount of difference in full charge times between a PPS and a standard USB Power Delivery Plug. In fact, the Pixel 7 hits full in 100 minutes with USB PD PSS and 101 minutes with an older charger. Meanwhile, the Pixel 7 Pro hits full in 104 minutes with the Google charger, and 111 minutes with the Apple model.

We’re talking about a margin of error difference here. Astute readers will also note that the Pixel 7 charge times are a smidgen faster than last year’s models. We clocked the Pixel 6 Pro at 111 minutes to full, though some of this difference could be down to temperature variations at the time of testing.

The Pixel 7 Pro charges a little faster than the Pixel 6 Pro.

Looking at key milestones, there’s not a huge amount in it either. Using the optimal charger, the regular Pixel 7 hits 25% in 15 minutes, 50% in 30 minutes, and 75% in 52 minutes. By comparison, using a non-PPS charger sees the Pixel 7 hit 25% in 17 minutes, 50% in 34 minutes, and 75% in 55 minutes. In other words, opting for an older charger costs you just a couple of minutes compared to the best-case scenario.

There’s virtually no difference in Pixel 7 charge times between a USB PD PPS and non-PPS charger.

There’s a bigger discrepancy for the Pixel 7 Pro, owing to its higher charging rate and larger 5,000mAh battery versus the Pixel 7’s 4,355mAh cell. It hits 25% in 15 minutes, 50% in 30 minutes, and 75% in 55 minutes when using Google’s 30W plug, which follows the Pixel 7’s trajectory very closely. Switching to a non-PPS charger sees these times fall slightly to 25% in 18 minutes, 50% in 37 minutes, and 75% in 60 minutes. Worst case, this charger is only seven minutes behind Google’s official recommendation.

Although the Pro benefits more from a PPS charger than the regular model, we’re talking mere minutes. It seems pretty clear that stumping up for Google’s 30W charger is not necessarily worth the extra cash, especially for the standard Pixel 7 model.

Why does the Pixel 7 charge slowly?

The why as to the Google Pixel 7 series’ similarly slow charge times, regardless of the plug, can be seen by taking a look at the power level throughout the charging cycle. The graph below plots the amount of power drawn by the handset throughout an entire cycle for both of the 30W plugs used in the previous test.

As you can see, the Pixel 7 and 7 Pro hit 21W and 23W, respectively, for approximately half of their charge cycle. This explains why they’re quicker to charge to 25% and 50% via USB PD PSS than standard USB PD. However, after that initial 30-minute charge, both handsets fall back to a more limited power level below 18W.

By comparison, a standard USB PD charger provides close to 19W of power quite consistently until the battery hits around 60% charge. While clearly slower, it’s only a few watts behind what you’ll obtain from a fancier PPS charger.

Google’s Pixel 7 Pro benefits more from PPS, thanks to higher power charging, but only by a few minutes.

This explains the virtually identical charge times we saw with the regular Pixel 7. An extra 2W makes very little difference in the early stages of charging, while the regular USB PD charger actually sustains higher power for longer (possibly due to temperatures), which sees it catch up on the PPS charger’s small lead in the latter stages of the charging cycle.

Either way, the Pixel 7 duo certainly aren’t the fastest charging phones on the market, which is almost certainly by design to ensure long-term sustainable battery life. The bigger issue for Pixel owners is how to maximize their charging speed and whether it’s really worth spending money on a brand-new, state-of-the-art charging plug.

Further readingHow long does it really take to fully charge your phone?

What charger should I use with the Pixel 7?

Google 30W USB C Power Charger upright next to box

Robert Triggs / Android Authority

The Pixel 7 and Pixel 7 Pro offer solid battery life, so we would expect that most users will be perfectly well served with overnight charging, thanks to Google’s Adaptive Charging technology. In that case, virtually any charger will do, but we’d recommend a USB Power Delivery plug capable of providing 18W of power or more. Such a plug would still work pretty well for a quick day charge, too, and chances are you already have one lying around from an older product.

More ideas: The best Google Pixel 7 and Pixel 7 Pro chargers

However, if you prefer day charging or simply want to ensure you’re able to top your handset up as quickly as possible, then a USB Power Delivery PPS charger capable of providing about 25W or more is what you’ll need. However, our testing only suggests this is worthwhile with the Google Pixel 7 Pro — the regular Pixel 7 sees very little benefit. Google’s official 30W plug does the trick here, but there are plenty of third-party options as well.

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Nothing Ear And Nothing Ear (a) Earbuds Are 1st With ChatGPT Integration – Forbes

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London-based Nothing Tech has just launched new earbuds, two pairs, in fact. The Nothing Ear and more affordable Nothing Ear (a) have just gone on sale—you can read Forbes contributor Mark Sparrow’s review of both pairs here. And now, the company has announced a cool new feature: and industry-first integration with ChatGPT. It comes with strings, though.

The new earbuds have just been announced and are available to pre-order from nothing.tech now and go on sale from Monday, April 22. If you’re in London, and you want to be among the very first to get the earbuds, you can snap them up in the Nothing Store Soho a little bit sooner, from Saturday, April 20 (click-and-collect is available).

From launch, the company said, “it will enhance its overall user experience with industry-first ChatGPT integrations in its audio and smartphone products.”

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Nothing goes on that it wants “to advance consumer tech products’ transition to AI, as well as simplify and enhance the user experience.”

It means users will be able to pinch the earbud to directly speak to ChatGPT to ask questions and hear responses in the earbuds. Nothing is also introducing new elements to Nothing phones, such as widgets which make it easy to talk to ChatGPT on the handsets. Other features include being able to send screenshots directly to ChatGPT and a clipboard shortcut for sending text.

So, what are the catches?

Although the Bluetooth new earbuds will work with any iPhone or Android phone, and there are dedicated Nothing apps for each platform, the ChatGPT integration is more limited for now.

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The earbuds must be paired with a Nothing handset. From today, the feature works with the premium model, the Nothing Phone (2), providing it’s running the latest software. The earlier Nothing Phone (1) and more recent, more affordable model, Nothing Phone (2a) will need to wait for a software update, which Nothing says is “coming soon”.

Also coming in the future is compatibility with earlier Nothing earbuds, that is the Ear (1), Ear (2) and Ear (Stick).

The new earbuds are very keenly priced. Ear costs $149 (£129 in the U.K.), while Ear (a) is $99 (£99 in the U.K.). Both pairs have active noise-cancelling, which is not commonplace at this price point. The more expensive Ear has a wireless charging case and a feature to create a personal sound profile. Both pairs come in black and white finishes, with Nothing’s trademark transparent design in the earbuds and charging case. But the Nothing Ear (a) has an eye-catching extra: a tremendous yellow-finish option.

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U of T Engineering PhD student is working to improve the sustainable treatment of Ontario's drinking water – U of T Engineering News – U of T Engineering News

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Growing up in a small neighbourhood in Cameroon, Maeva Che (CivMin PhD student) was aware of challenges of accessing clean drinking water. 

“Experiencing that exposure to water issues and challenges with sustainable access to safe drinking water ignited my interest in water treatment,” Che says.  

Che’s drive to improve water quality around the globe brought her to the Drinking Water Research Group (DWRG) at University of Toronto’s Faculty of Applied Science & Engineering, where she is researching innovative solutions to address local water issues.  

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Che is working under the supervision of Professor Ron Hofmann (CivMin), who is a member of the DWRG. Her research focuses on removing unpleasant taste and odour compounds in Ontario’s drinking water by promoting the biodegradation of these compounds through granular activated carbon (GAC) filtration. 

The project is supported by a five-year Natural Sciences and Engineering Research Council of Canada (NSERC) Alliance grant called Advanced and Emerging Issues in Drinking Water Treatment. 

GAC filtration is a water treatment process that uses granular activated carbon, which is made from organic materials that are high in carbon, such as wood, coal or coconut shells. These materials are heated in the absence of oxygen through a process known as pyrolysis and prompted chemically or physically to produce the activated carbon. The activation enhances the material’s adsorption properties, making it productive to remove contaminants from water.  

While GAC filtration is an effective treatment process, its adsorptive capacity is limited. The adsorptive capacity of GAC is expected to become exhausted after about three years in service and drinking water treatment utilities must replace the GAC. Aside from the inconvenience, replacing GAC is costly.  

Che is working on alternative ways to remove contaminants using GAC filtration, specifically through biodegradation. When the filtration has been in service for a while, there is the growth of micro-organisms on the GAC, which can be useful for removing contaminants.   

PhD student Maeva Che works with filtration systems research at the Drinking Water Lab in the Department of Civil & Mineral Engineering. (photo by Galina Nikitina)

“Think of biodegradation as the useful bacteria on the GAC feeding on the contaminants in the water, thereby removing them,” says Che. 

“If the GAC has enough good bacteria that is biodegrading the compounds, the GAC may not need to be replaced when its adsorptive capacity becomes exhausted. This can extend the filter’s lifetime, resulting in cost benefits for treatment utilities.” 

In other words, biodegradation can potentially enhance the performance of GAC filters. 

Che and the DWRG will collaborate with water treatment plants to determine methods that can enhance the biodegradation of taste and odour compounds within their GAC filters.  

Currently in its initial phase, the project is taking place alongside the Peterborough Utilities Group’s drinking water treatment plant, where Che is conducting pilot-scale filtration studies with support from the Peterborough Utilities Commission. They plan to extend this research to other partner treatment plants in the future. 

Working with various water treatment plants across Ontario, Che will also assess the effectiveness of GAC filters in removing non-traditional taste and odour compounds, which are not commonly monitored. 

To achieve this, she’ll evaluate filter performance for two common taste and odour compounds — 2-methylisoborneal and geosmin — and eight additional non-traditional compounds that can cause taste and odour events. This involves collecting GAC and water samples from the plants and conducting lab-scale filtration tests, called minicolumn tests. This test, developed by the DWRG, allows to differentiate between adsorption and biodegradation in GAC filters. 

Minicolumn tests provide crucial insights into the performance of the GAC filters in terms of the adsorption and biodegradation of contaminants. To distinguish between these mechanisms, researchers use parallel minicolumns. One minicolumn operates under conditions where the biological activity of micro-organisms is suppressed, which isolates the adsorption process. The second minicolumn operates without biological suppression, allowing both adsorption and biodegradation to occur. 

“Many plants are unaware of their filters’ performance for other compounds, aside from the two common ones, that also contribute to taste and odour events in water. Our project, therefore, plays a crucial role in expanding the understanding of this,” Che says. 

Project partners include the Ajax Water Supply Plant and the Barrie Surface Water Treatment Plant.  

The DWRG is made of approximately 30 graduate students, post-doctoral fellows, research managers and associates who collaborate with local, national and international industry and government organizations to address a wide range of projects related to municipal drinking water. 

Che credits her experience as a master’s student with the research group as a major factor in her decision to pursue a PhD at the University of Toronto.  

“During my master’s degree with the DWRG, I worked on projects that improved drinking water quality, gaining hands-on experience at treatment plants. Seeing the results of my research reinforced my decision to pursue my PhD here,” Che says. 

Ultimately, Che hopes to make a significant impact in the field — and the DWRG provides opportunities to achieve this, with a supportive community of researchers and supervisors.  

“My goal is to continue researching and developing sustainable solutions for drinking water treatment that benefit communities in need,” she says. 

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Huawei's latest flagship smartphone contains no world-shaking silicon surprises – The Register

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When Huawei debuted its Mate 60 smartphone in mid-2023, it turned heads around the world after teardown artists found it contained a system-on-chip manufactured by Chinese chipmaker Semiconductor Manufacturing International Corporation (SMIC) using a 7nm process.

SMIC was thought not to be able to build that sort of thing. So while the Mate 60 didn’t differ markedly from every other modern smartphone, its very existence called into question the effectiveness of US-led efforts to prevent advanced chipmaking tech reach the Middle Kingdom.

Much speculation has therefore concerned what Huawei would deliver next, and this week the world got its answer – in the form of the Pura 70.

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Chinese media report that early users of the device have posted details of its innards, naming the SoC as Kirin 9010 with four efficient cores running at 1.55GHz, half a dozen performance cores at 2.18GHz, and a couple of high-performance cores zipping along at 2.30GHz. All cores are Arm v8. A third-party spec sheet suggests it’s a 7nm chip – meaning Chinese chipmakers appear not to have made another unexpected advance.

Early tests suggest it outperforms the Kirin 9000 found in the Mate 60, but independent assessments are yet to emerge. The crowdsourced evaluations currently available are sometimes dubious.

What we can say with confidence is that the Pura 70 has a 6.6-inch OLED display with 120Hz refresh rate and resolution of 2,760 x 1,256. It has 12GB RAM aboard, and buyers can choose from 256GB, 512GB, or 1TB of storage.

The three rear-facing cameras on the base models can capture 50, 12, and 13 megapixels apiece.

The Pura range derives from Huawei’s P-Series handsets that stretched from the midrange to the low-end of premium, but are now focussed – pardon the pun – on photography enthusiasts. The device comes on four variants, each priced to match the four editions of Apple’s iPhone 15.

The screen on the high-end “Ultra” model grows to 6.8 inches and 2,844 × 1,260 pixels, with two rear cameras that shoot at 50 megapixels and one at 40. One of the 50MP snappers is retractable, to enhance its zooming powers.

Importantly, all models of the Pura 70 run HarmonyOS 4.2 – Huawei’s not-Android operating system.

China is all-in on HarmonyOS as the nation pursues indigenous alternatives to Western tech. In recent weeks Chinese media and government agencies have noted the growing proliferation of native HarmonyOS apps, trumpeting that developer enthusiasm for the platform means local buyers now have a more patriotic alternative.

That alternative appears to be welcome: after the debut of the Mate 60, analyst firm IDC saw Huawei’s smartphone market share improve by 36.2 percent. ®

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