Forgot your password?

typodupeerror

Comment: Look at what happened in Toulouse (Score 2) 186

I really fail to understand how this data is used and if anyone actually checks it or if it is kept in order to incriminate you later. See what happened in Toulouse last week: a man who went in and out Afghanistan and Pakistan, was known to the police, went in and out of jail a couple of times, was known to frequent an extremist group, still managed to kill children in a school and keep the police busy for two days under siege.
Shouldn't he have been stopped before?

I don't understand, really.

Comment: The US market is really confusion (Score 4, Interesting) 75

by Jack Malmostoso (#39158363) Attached to: T-Mobile Announces LTE Network

I will visit the US this summer from Europe. Can anyone point me to a link where I can get some maps/explanations about roaming in the US?
I am horrendously confused about the US market and their current standards.
I will come with a N9 and an iPhone so I should be fine, but I'd like to be sure ahead of the time.

Comment: It's easy for men (Score 4, Insightful) 502

by Jack Malmostoso (#39146245) Attached to: The correct number of shoes to own:

2 pairs of nice shoes for suits (one brown, one black), 1 pair of boots for heavy weather, 3 pairs of sneakers, 1 pair of running shoes. Done.

Also, having multiple pairs of shoes makes them last longer: wearing the same pair every day runs them into the ground faster than alternating between a few.

But more importantly: a fashion poll on Slashdot?

Comment: Re:Cold Climate? (Score 2) 362

by Jack Malmostoso (#39135041) Attached to: Why Tesla Cars Aren't Bricked By Failing Batteries

Electrolyte of Li-ion battery completely freezes somewhere around -30C. Degradation of performance (i.e. increase in resistance of the electrolyte and subsequent decrease of available power) starts sooner, but there are additives for that.
I guess there are few places on earth where a roadster is left parked for an extensive period of time in order for the whole pack to freeze.

Comment: Re:Tow? (Score 4, Interesting) 362

by Jack Malmostoso (#39135031) Attached to: Why Tesla Cars Aren't Bricked By Failing Batteries

Well technically towing an electric vehicle, missing a clutch, would make it a generator, which could possibly damage the battery. However there is a youtube video showing a Nissan Leaf being towed and the battery being recharged. Don't try this at home!

Another option with the Tesla could be to lift the back wheels and tow it with the front wheels on the ground, unless there is some regenerative braking system which still acts as a generator. And yes, you want to lock the wheels if you do that.

Comment: Summary is right, BMS is probably the cause (Score 3, Interesting) 362

by Jack Malmostoso (#39135019) Attached to: Why Tesla Cars Aren't Bricked By Failing Batteries

When I read the blog article I thought exactly the same thing. Cells left to self-discharge will not go below their thermodynamic equilibrium, which is more or less the potential at which they are built (remember, Li-ion batteries when assembled are discharged by nature). There is no danger of damaging the cells when self-discharge occurs.
Another issue is when the cells are actively overdischarged, however a Li-ion battery is more likely to explode due to overcharge (plating of Li metal at the negative electrode) than overcharge (insertion of too much lithium in the cathode and electrolyte depletion).

Most likely the BMS is refusing to come back to life unless hooked up to a secret Tesla computer, but I guess the packs can be refurbished.

Also, kudos to the idiot recharging the car with a 30m cable extension (that's what 100 feet is, right?).

It's not easy, being green. -- Kermit the Frog

Working...