HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Page 1/3  >  >>
Charles Murray
User Rank
Blogger
Re: Longer Lasting?
Charles Murray   3/4/2013 8:06:42 PM
NO RATINGS
It's going to be hard to squeeze more energy out of lithium-ion, what with researchers already approaching 40% of the theoretical limit. But faster recharge time could be an important step forward.

Ann R. Thryft
User Rank
Blogger
Re: Longer Lasting?
Ann R. Thryft   3/1/2013 12:42:30 PM
NO RATINGS
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.

apresher
User Rank
Blogger
Battery technology
apresher   3/1/2013 11:11:44 AM
NO RATINGS
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.

Charles Murray
User Rank
Blogger
Re: Longer Lasting?
Charles Murray   2/28/2013 6:29:05 PM
NO RATINGS
Ann, I guess it depends on whose perspective we view it from -- the phone manufacturer or the battery maker.  

Jack Rupert, PE
User Rank
Platinum
Re: Longer Lasting?
Jack Rupert, PE   2/28/2013 2:01:55 PM
NO RATINGS
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.

Ann R. Thryft
User Rank
Blogger
Re: Longer Lasting?
Ann R. Thryft   2/27/2013 11:44:06 AM
NO RATINGS
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?

Elizabeth M
User Rank
Blogger
Re: Innovation is happening
Elizabeth M   2/27/2013 5:11:00 AM
NO RATINGS
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/

Elizabeth M
User Rank
Blogger
Re: Longer Lasting?
Elizabeth M   2/27/2013 4:20:51 AM
NO RATINGS
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!

Pubudu
User Rank
Platinum
Re: Innovation is happening
Pubudu   2/27/2013 12:17:57 AM
NO RATINGS
Elizabeth, thanks for the awareness article

Do you have any idea of cost of production and the weight of these batteries compared to the other batteries.

Charles Murray
User Rank
Blogger
Re: Longer Lasting?
Charles Murray   2/26/2013 7:47:48 PM
NO RATINGS
"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?

Page 1/3  >  >>


Partner Zone
Latest Analysis
A bold, gold, open-air coupe may not be the ticket to automotive nirvana for every consumer, but Lexus’ LF-C2 concept car certainly turned heads at the recent Los Angeles Auto Show. What’s more, it may provide a glimpse of the luxury automaker’s future.
Perhaps you didn't know that there are a variety of classes, both live and archived, offered via the Design News Continuing Education Center (CEC) sponsored by Digi-Key? The best part – they are free!
Engineer comic Don McMillan explains the fun engineers have with team-building exercises. Can you relate?
The complexity of diesel engines means optimizing their performance requires a large amount of experimentation. Computational fluid dynamics (CFD) is a very useful and intuitive tool in this, and cold flow analysis using CFD is an ideal approach to study the flow characteristics without going into the details of chemical reactions occurring during the combustion.
The damage to Sony from the cyber attack seems to have been heightened by failure to follow two basic security rules.
More:Blogs|News
Design News Webinar Series
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jan 12 - 16, Programmable Logic - How do they do that?
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service