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Comment Re:Too much current (Score 1) 295

Actually, the GP is right about 380 amps. To charge a 2.1Ah battery, you need 2.1/3600*20 amps at the battery's voltage.

You're also right in saying that your household power supply can easily take it at high voltage, but you must take into account the conversion to low voltage too.

The charging equipment would simply be huge and the cable and plug would be ridiculously impractical at 380A.

You'd need something in this order of magnitude :)
http://i01.i.aliimg.com/wsphoto/v0/575796945/GENUINE-ANDERSON-SB-350A-600V-POWER-CONNECTOR-WITH-2-0-AGW-CONTACTS.jpg
Quickies

Submission + - How to prove someone is female?

krou writes: Caster Semenya won the 800m at the World Athletics Championship in blistering style leaving her competitors in the dust, but she has been thrown into the midst of a scandal amidst claims that she's not really a woman. According to press reports (there are many), she's believed to shave, is flat chested, has a very masculine physique, previously preferred playing physical games with boys, and shunned traditional female activities and clothing. Questions about her gender have followed her entire career. Previously, acceptance that she was a women relied on simple inspection of female genitals. However, according to other reports, the IAAF claim that they want to conduct further tests to see if 'she may have a rare medical condition that gives her an unfair advantage.' An IAAF spokesmen noted that 'The [testing] process was started after Semenya made her startling breakthroughs — a 25-second improvement at 1500m and eight seconds at 800m, just some weeks ago.' I'm curious what /.ers think: what can be considered proof of someone being male or female? Is it simply a case of having the right genitals, or is there some other criteria that should be used? Is the IAAF right in claiming that someone should be prevented from competing because they have a rare medical or genetic advantage?
Cellphones

How Not to Build a Cellphone 326

Jamie found an NYT story about a new t-mobile Shadow phone which starts off by talking about how Apple is changing the phone game by wrestling power from the carriers, and then discussing what could be a reasonable piece of hardware. And then how it is wrecked by software. The phone has wait screens, a task manager, odd error messages etc. Makes for an amusing read.
OS X

HardOCP Spends 30 Days With MacOSX 708

boyko.at.netqos writes "Hardocp.com has published "30 days with MacOSX" — with the same author from "30 days with Linux" and "30 days with Vista" doing the evaluation. Ultimately he likes the stability and security but other concerns keep him from recommending it. From the article: 'The hardware lock-in and lack of quality freeware makes owning and maintaining a Macintosh an expensive endeavor ... Mac OS X has some amazing capabilities, but you spend a lot of money. Indeed, it seems the preferred method for solving Mac computer problems is to buy your way out of it. Slow computer? Buy a new one. Want to convert a file? Buy a utility. Want to do simple tasks? Buy a commercial program. Peripherals don't work? Buy replacements.'"
Software

OpenOffice.org for Mac OS X Alpha Released! 251

An anonymous reader writes "Nearly 6 years after announcing a Mac port, OpenOffice.org has released the first release of OpenOffice.org for Mac OS X that can finally run without X11!! An alpha is available for download today, but a lot of help is still needed to make OpenOffice.org available for Mac OS X. The site is very blunt: 'WARNING: THIS SOFTWARE MAY CRASH AND MAY DESTROY YOUR DATA DO NOT USE THIS SOFTWARE FOR REAL WORK IN A PRODUCTION ENVIRONMENT. This is an alpha test version so that developers and users can find out what works and not, and make comments on how to improve it.' Currently missing functionality includes printing, pdf export, copy/pasting, and multiple monitors. That said, if you're interested in participating you can visit the Mac team to figure out how you can help today."

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