Researchers at the University of Southern California, led by Professor Chongwu Zhou, replaced graphite with porous silicon nanoparticles in anodes of lithium-ion batteries to come up with a new design. The battery, which could be available in two to three years, has a longer life and charges more quickly than lithium-ion batteries used now. (Source: Mingyuan Ge & Chongwu Zhou/USC)
The perspective of "talk time" is the user's, which is why the term was invented. Although it's therefore a "marketing" term, it gave a much clearer picture of what the challenge actually was, i.e., improve and extend the system function and therefore the user experience, something that can get lost when looking only at specs. As mentioned, that was back in the day: cell phones were used for talking only, and batteries didn't last very long, certainly not as long as users expected. These days we should also be saying "text time" as Al points out.
Recharging in 10 minutes is a very valuable feature. With smartphones, talk time seems to be meaningless in terms of how the battery is doing. The data connection is the big user of power at least for me. Maybe I'm not talking as much as others versus texting, surfing. Amp-hours is probably more accurate but definitely a tech spec in comparing models.
Come to think of it, Chuck, I guess amp-hours is a useful metric for general comparison purposes. I do look at that number when I'm purchasing rechargeable AA cells. Sure, manufacturer X is optimized for application Y, but it is a good starting point that is probably at least as accurate as talk hours.
Chuck is right, "talk time" varies from one battery brand and model to the next. Length of charge or how long charge is retained is probably the appropriate term & spec for comparison purposes. Although actual talk time, i.e., actual usage time, is shorter than how long a battery retains its charge. That's why the term "talk time" was invented: how long can you continue to use the product?
Hi, Pubudu, sorry I don't know offhand that information but I will take a look at the info about the research online and see if I can find out. Here is a link to a press release about the research: http://news.usc.edu/#!/article/46778/cheap-strong-lithium-ion-battery-developed-at-usc/
Jack, I didn't think of that, but it would be a good idea to have a standard for comparison. Funny, but as important as the battery is, it seems we sometimes often forget about it when buying a gadget if we are determined to have the latest and most innovatively designed device. Or maybe that's just me!
"Talk time" is application dependent, so the same battery might have a different talk time from one application to the next. So I would imagine the best way to express it would be in the battery manufacturer's parlance -- Amp-hours -- wouldn't it?
During a teardown of the iPad Air and Microsoft Surface Pro 3 at the Medical Design & Manufacturing Show in Schaumburg, Ill., an engineer showed this "inflammatory" video about the dangers of maliciously mishandling lithium-ion batteries.
Science fiction author Isaac Asimov may have the best rules for effective brainstorming and creativity. His never-before-published essay, "On Creativity," recently made it to the Web pages of MIT Technology Review.
Much has been made over the potentially dangerous flammability of lithium-ion batteries after major companies like Boeing, Sony, and Tesla have grappled with well-publicized battery fires. Researchers at Stanford University may have come up with a solution to this problem with a smart sensor for lithium-ion batteries that provides a warning if the battery is about to overheat or catch fire.
In this new Design News feature, "How it Works," we’re starting off by examining the inner workings of the electronic cigarette. While e-cigarettes seemed like a gimmick just two or three years ago, they’re catching fire -- so to speak. Sales topped $1 billion last year and are set to hit $10 billion by 2017. Cigarette companies are fighting back by buying up e-cigarette manufacturers.
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