On Sat, Dec 12, 2009 at 02:15:32PM EST, lee wrote: > On Fri, Dec 11, 2009 at 05:41:05PM -0800, John Jason Jordan wrote: > > On Sat, 12 Dec 2009 01:42:49 +0100 > > lee <l...@yun.yagibdah.de> dijo: > > > > >On Fri, Dec 11, 2009 at 10:45:31PM +0100, Emanoil Kotsev wrote: > > >> > > >> no need of lithium at all. > > > > > >What's the alternative? Have they found another resource to make > > >batteries from?
> > There are lots and lots of ways to make batteries. The great > > advantage of lithium is that it has by far the greatest power to > > weight ratio of any other material. This is very important for > > laptops. > Yeah, but considering how small the amount of energy is that batteries > can store, even those that use Lithium make for a very poor energy > storage. > > > The disadvantage of lithium is that it is expensive. > > Batteries have always been expensive, and they still are. They have > always been empty, and they always are. > > > If you look at the history of batteries you will note that the rate > > of new battery inventions has been increasing dramatically. > Then why aren't there dramatically better batteries available yet? > When I was a child, I had an RC car, and it would run about 1/2 hour > before the battery was empty. Then it would take so long to recharge > that you could use it only once a day, maybe twice if you started > early. Then the batteries of the control device would be empty and > needed to recharge for a day. I have a Magcharger, and it's useable > for only about an hour, then takes 10--16 hours to recharge. After not > even 1/2 year, its battery seems to be on the way out, despite > treating it well. I've used two different cell phones, and unless you > actually talk to someone (i. e. use it), the battery lasts only a few > days. If you use them, the battery is empty after about two hours. > It's ridiculous. And are there any batteries yet that are up to the > temperature specifications for mobile devices? Even the ones you get > for Magchargers aren't. I have a GPS device, and its battery is almost > always empty --- even if it's not, it lasts maybe 20--30 minutes at > best. > > Batteries just suck, and I don't see that changing any time soon, if > ever. All your questions and more are answered in the excellent link provided by Chris Bannister. Here's a reminder in case you have deleted his post: http://www.batteryuniversity.com CJ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
