This new battery charges to 70 percent in two minutes, and lasts for 20 years - Page 1
Forum section: electronics / general

author: Mr.B
author_rank: Unknown
timestamp: October 23, 2014, 08:53:58 pm
content: Another one of those super battery claims.Could be legit.http://media.ntu.edu.sg/NewsReleases/Pages/newsdetail.aspx?news=809fbb2f-95f0-4995-b5c0-10ae4c50c934http://www.sciencealert.com.au/news/20141410-26327.htmlPlease correct me if my math is wrong:A 2000mAh battery, to be charged to 70 percent in 2 minutes would require a charger capable of delivering 42A...

author: German_EE
author_rank: Super Contributor
timestamp: October 23, 2014, 09:01:33 pm
content: Well, a 100% charge will be 60A for 2 minutes so 42A sounds about right. This of course assumes a 100% efficient charging circuit and no losses in the battery. Charging will be fun, just stand well back.

author: Mr.B
author_rank: Unknown
timestamp: October 23, 2014, 09:03:51 pm
content: Absolutely... Well, well back.

author: Marco
author_rank: Super Contributor
timestamp: October 23, 2014, 09:36:53 pm
content: About 1.5 MW to charge a Tesla battery pack ... charging stations will need medium voltage connections to the grid (and we'll probably need a new grid).

author: Mr.B
author_rank: Unknown
timestamp: October 23, 2014, 09:42:04 pm
content: So where do I plug this charger in?

author: Marco
author_rank: Super Contributor
timestamp: October 23, 2014, 09:56:03 pm
content: Don't forget the tubes for the forced water cooling too.

author: graynomad
author_rank: Regular Contributor
timestamp: October 23, 2014, 11:52:18 pm
content: Quote from: Mr.B on October 23, 2014, 09:42:04 pmGood one

author: Robyn
author_rank: Newbie
timestamp: October 24, 2014, 01:57:32 am
content: Perhaps you have to use the microwave to charge

author: Rigby
author_rank: Super Contributor
timestamp: October 26, 2014, 12:44:07 am
content: I think an end-user product would not be a 2-minute 70% variety for the reasons indicated. That performance would be quite useful for something like a Tesla, of course.More important, to me, is the capacity vs physical size, and the number of charge cycles it can withstand.If my phone could charge from 0% to 70% in ten minutes, and do it 1000 times over its life, I'd be more than happy.

author: JoeO
author_rank: Frequent Contributor
timestamp: October 26, 2014, 02:56:32 am
content: I would charge it for 3 minutes and get it to 100%.

author: miguelvp
author_rank: Super Contributor
timestamp: October 26, 2014, 04:12:11 am
content: Quote from: JoeO on October 26, 2014, 02:56:32 amBut everyone knows that the last 10% of the work takes 90% of the time.

author: Rigby
author_rank: Super Contributor
timestamp: October 26, 2014, 10:35:51 pm
content: In my experience, there's the first 90% of the work, which takes about 90% of the time, then there's the second 90% of the work, which takes about 150% of the time.This is a joke about feature creep and slipping deadlines.

author: a210210200
author_rank: Regular Contributor
timestamp: October 29, 2014, 06:31:25 pm
content: Quote from: Mr.B on October 23, 2014, 08:53:58 pmThey don't mention the capacity. Since it has lifespan and ultra-high C rates it probably is going to be like a supercap which is sorta like a battery but the capacity is greatly reduced while lifespan and current limits are extreme.

author: Mr.B
author_rank: Unknown
timestamp: October 29, 2014, 11:11:33 pm
content: Bloody hell!!! He actually posted in another thread.Perhaps you should read the articles before posting.It is not a super cap at all.It is a modification of a Li.From the first article:"In the new NTU-developed battery, the traditional graphite used for the anode (negative pole) in lithium-ion batteries is replaced with a new gel material made from titanium dioxide."From the second article:"The breakthrough came after the scientists replaced the traditional graphite that makes up the anode (the negative pole of the battery) in lithium-ion batteries with a new gel material made from titanium dioxide nanotubes that they created themselves."

author: a210210200
author_rank: Regular Contributor
timestamp: October 30, 2014, 12:08:40 am
content: Quote from: Mr.B on October 29, 2014, 11:11:33 pmhttp://en.wikipedia.org/wiki/PseudocapacitorSeem to fit the bill of very fast charging. Super-caps are not really a capacitor and not really a battery (You can even make one that is basically a battery but isn't as "slow"). Plus if they are so great where is the capacity rating. They got ultra-fast charging and good cycle life, and? capacity.