Re:Electric vehicle battery costs rapidly declining, Tesla c...
by randyrand on Tuesday June 07, 2016 @05:48PM
(#11858210)
They say that battery tech has been improving at 2% a year.
That would mean we should see a ~37% improvement between 2008 and 2016. Seems about right.
Re:Electric vehicle battery costs rapidly declining, Tesla c...
by Animats on Tuesday June 07, 2016 @11:52PM
(#11859873)
That's not a "fivefold improvement". A fivefold improvement is 400% more.
Re:Electric vehicle battery costs rapidly declining, Tesla c...
by warfangle on Wednesday June 08, 2016 @12:23AM
(#11860006)
Maybe the battery form factors that are being improved aren't appropriately sized for use in smartphones? :)
Re:Electric vehicle battery costs rapidly declining, Tesla c...
by aramadia on Tuesday June 07, 2016 @06:30PM
(#11858516)
1.02^8=1.17, or ~17% improvement
The iPhone had an 1150mAh battery and, according to anandtech [0], 284 minutes of talk time (3G) and 400 minutes of web browsing time (WiFi). It weighed 133 grams.
In 2016:
The iPhone SE has a 1,624mAh battery and gets 556.2[1] minutes of web browsing time on WiFi.
It weighs 113 grams.
Of course, I have no idea what percentage of weight made up the battery for either of these phones. I also have no idea what percentage of the cost to manufacture the battery made up for either of these phones. But I do know the iPhone SE @ 16GB is $100 cheaper than the iPhone 3G @ 16GB was, not accounting for inflation.
We're seeing some improvement, most definitely. But unless someone has data to compare the two batteries directly, we can't say by how much.
The smartphone world has been much more keen on improving power consumption of the hardware in question rather than power storage. At the scale of power that an automobile uses, the opposite is true.
0. http://www.anandtech.com/show/2571/18 1. http://www.anandtech.com/show/10285/the-iphone-se-review/3