dem batteries

Distributed storage is potentially a better option than mass storage facilities. A combination would be ideal. Too many people are waiting for the government or industry to do something when they could be doing it themselves. Especially now that a large battery bank doesn't cost $30k and weigh two tons.

I've always found it annoying when people refer to hydrogen as a new "fuel", especially when they're referring to hydrogen produced by electrolysis. Using electrolysis means that the theoretical limits are that you can get as much energy -out- of burning hydrogen as you put into splitting the water. The traditional meaning of fuel is the exact opposite, that you can get more energy out of combustion than you have to put into creating the fuel.

TLDR - Hydrogen is an energy storage technology, not a fuel. It competes against batteries, not against carbon fuels.

And that is why you don't throw batteries into a fire kids.

Was waiting for the battery to explode ... trifecta!

Batey, aggravated rape and other (unlisted) charges...I think not hate crimes because....well, no reason, this was a clear hate crime, but he wasn't charged as such or sentenced for the other convictions..... Black privilege?
Tennessee-Class A Felony - 15-60 years in prison and a fine not more than $50,000 (aggravated rape, rape of a child)
"There were five acts of sexual assault and rape committed by [Batey] and him alone, and there were seven acts of violence he was found guilty of committing against me.
But sexual assault was not where the attack ended."
They also kidnapped her to take her unconscious body to the raping place.

Turner, 3 cases of felony sex assault for one act. It seems the prosecutor was asking for 1/2 the max of 12 years.
Felony Sexual Battery: This has a range of punishments. The defendant could receive a term of imprisonment in county jail for up to 1 year and a fine of up to $2,000. However, California state laws also allows for imprisonment for 2, 3, or 4 years as well as a fine of up to $10,000.

Keep in mind, different states have different laws and sentences.

Wow that guy made the video annoying to watch. It is a shame he hasn't watched other R/C planes, he might learn that those modern electric motors can generate so much thrust that the body wouldnt even be needed. You would have to try very very hard and add a ton of weight to make a battery powered plane that couldn't fly. And when I say fly I mean "dragged along by a horizontal helicopter blade".

“The most important thing that happens when a new iPhone comes out is not the release of the phone, but the disassembly of it.”

Demonstrably false. The market has proven that almost no one cares about this.

When the iPhone first came out, people derided it’s lack of removable battery. Good luck finding a high end smartphone with a removable battery these days. Then there was components soldered onto the board, then the removal of the headphone socket, all of which Samsung, etc have copied*.

Outside of a vocal minority, no one cares about phone repairability. If you do, congrats, you’re part of that minority, and that’s fine. Personally, I think it’s a reasonable thing, but clearly, most people prefer thinner, lighter, water resistant phones over fixable phones.

* note: yes, Apple have copied features of droid phones too. No, it’s not relevant to this discussion.

Promoting this video and sending it back into the queue for one more try; last queued Saturday, January 6th, 2018 2:58am PST - promote requested by notarobot.

What if we get really good at drone AI and batteries? has been added as a related post - related requested by notarobot.

I agree for the most part, but with batteries, now becoming reasonable in size and price, it's not so hard to be totally off grid. Micro hydro can also be efficient power storage if properly designed with a dual reservoir system.
Granted, that seems to work best in small scale setups so far, but there is an island .....(https://www.npr.org/sections/parallels/2014/09/17/349223674/tiny-spanish-island-nears-its-goal-100-percent-renewable-energy)
...currently (since 2014) using this tech to be nearly 100% green.

Dismissing projections as unrealistic without fully examining them may doom our economy and planet.
That's what happened with solar, people just claimed it's expensive and unreliable, which meant those they convinced didn't know how wrong that is, and didn't buy systems or support solar farms. I ignored them and did some light math, and found that even an expensive high tech system with batteries, professionally installed, would pay for itself in about 8 years, with a 20 year expected lifespan (and I live in Humboldt county, with the foggiest airport in America, not Arizona). I'm damn glad I didn't listen. Even a 2 year delay would have cost me 1/2 my rebates, making the system take an extra 2+ years to pay for itself by costing me thousands upon thousands of dollars (instead of saving me thousands per year).

Edit: Also, here in Humboldt we just switched to choice in electricity, we can choose regular pge power (mostly old school generation), a mixture of up to 75% (I think, maybe higher) renewable for cheaper, or 100% renewable for more. All 3 now bill transmission (including voltage/frequency regulation) separately, so it's easy to see what generation alone costs. It's clear so far that mostly renewable is the best bet economically, and I assume it will become more renewable as new technologies become available.....at least I hope so.

I hate fucking Marmots -- they eat battery cables and brake lines (yes, really). They're a plague up at Mt. Rainer if you park your car overnight. You'll see cars covered with blue tarps held down by rocks in the parking lots of the park: those are hikers trying to keep the fuckers from eating anything rubber on the car.

The video is right that pretty much the number one most important question is the weight of the truck (basically tare weight, which is actually the tractor plus empty trailer). When I watched the announcement, I thought Musk was slightly cagey about that, but I thought that he said that it would be in the ballpark of a normal ICE semi. Guess I should watch again.

I think Musk made some semi-optimistic predictions about battery tech improvement and economy of scale. Frankly, I think he's earned the right to be semi-bold with his predictions, given his and Tesla's track record (paying off govt. loan very early, single handedly pushing forward battery tech and production, etc. etc.). His optimistic predictions have a tendency of panning out.

The average American is never going to switch to an electric car purely or even largely for "green conscious" reasons. The switch will happen when the electric car is better than the ICE alternatives in concrete metrics like performance, reliability, and operating cost. Musk is pushing that date forward at an incredible pace. Arguably it is already true for many use-cases at the high price-point range of the Model S, but that price point limits the scope of the impact quite a bit. He knows that to really shake things up, he's got to get that price point down, and he knows that to do that he's got to improve the economy of scale on battery tech. Which he's doing by expanding it into adjacent markets like home batteries, etc.

I think he deserves a lot of credit for "walking the walk" when it comes to working hard to protect/improve the environment, as opposed to Al Gore et al. "talking the talk".

So wait...he talks about how important the weight is because it determines the load that can be carried. He does the weight calculations and then immediately starts talking about the cost of the truck and never finishes his weight analysis.

According to his estimation, the weight of the unloaded truck with trailer is 7 tons. If the batteries on a 500 mile truck weigh 8 tons then the total 15 ton vehicle is lighter than the ~17 ton average for a standard semi with trailer. I'd round up for the weight of the motors and since his empty weight calculation seems a tad low. So you can assume the weights of a Tesla truck and stardard truck are at least within spitting distance of each other.

Range is less of an issue since a driver is only allowed to drive a maximum of 11 hours in a 14 hour period. So assuming they drove a solid 11 hours at 60 miles per hour (since that's what the 500 mile range is based on), the standard truck can drive 160 miles further. But if you're driving 11 hours without a break, you're an idiot. And Tesla indicates that a battery can fully charge in under 30 minutes.

Last point, he estimates the battery cost alone will be $108K and $180K but Tesla has set the expected price of the actual trucks as $150K and $180K. Considering a traditional truck runs $80K - $150K, it seems the return on investment for a Tesla truck might be shorter than a traditional truck, given the economy of electric compared fossil fuel.

Great video though. Love all the math.

I've always thought this would be a cool business to have. Retrofitting cars with more self-driving features would also be awesome.

It doesn't even look like these guy's are using advanced batteries. Small LIPO batteries distributed around the open areas of the car would make weight distribution better and probably provide a much higher total range.

Maybe they are keeping it simple for cost reasons.