Xiaomi Shows Off Phone That Can Charge To 100% In 8 Minutes (mashable.com) 124
Xiaomi's at it again: The company's new fast charging technology can get a smartphone from 0 to 100 percent battery in less than 8 minutes. From a report: The 200W wired charging tech, used on a modified Xiaomi MI 11 Pro with a 4,000mAh battery, gets the phone from 0-10% in just 44 seconds. The phone gets to 50% in 3 minutes, and it's fully charged in 7:57 minutes. In a YouTube video, Xiaomi also showcased its 120W wireless charging tech, which gets a smartphone with a 4,000mAh battery from 0 to 100 percent battery in 15 minutes.
That's pretty quick! (Score:5, Interesting)
Re:That's pretty quick! (Score:5, Insightful)
I'm more interested in "can it detonate with the force of a hand grenade when something goes wrong?"
Re: That's pretty quick! (Score:5, Funny)
Only if your a dissident.
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Only if you're a Uighur or a Uighur sympathizer
FTFY
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+1 Not Funny, But I Laughed Anyway
Re:That's pretty quick! (Score:4, Funny)
I'm more interested in "can it detonate with the force of a hand grenade when something goes wrong?"
No, Samsung patented that feature.
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or was that Ford for the Pinto getting tapped from behind. Oh wait that was more like a tactical nuke, my bad.
Re:That's pretty quick! (Score:5, Informative)
Interestingly, lithium ion batteries are endothermic while charging. They might need to actively heat the battery pack during charging.
(Most battery chemistries are endothermic while either charging or discharging, and exothermic in the other charge/discharge direction. It varies with chemistry which way is which.)
See e.g. here [electronicdesign.com]
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From your linked article:
"The endothermic nature of the charge chemical reaction is weak compared to other heat sources. In every case we’ve studied at Micro Power, battery temperature increased during charge because the other heat sources overwhelm the weak endothermic chemical reaction inside the cell."
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Watching the video you can see that the charge rate ramps up at the start, which is likely the battery heating up.
Current, Resistance and Tea (Score:5, Informative)
Interestingly, lithium ion batteries are endothermic while charging. They might need to actively heat the battery pack during charging.
They are: passing a large current through the battery's internal resistance will generate a lot of heating which is why batteries get warm while charging. To charge a 4,000 mAh battery to 50% in 3 minutes will take a current of 40A which is around three times the current that a plug can safely carry.
Even though the voltage of this current will be much less than the mains the heating it causes depends on the square of the current. So if the internal resistance is say around 0.3 ohms (just guessing based on this [batteryuniversity.com]) then the heating power will be about 500W (=I^2R) which is about a quarter the heating power of a kettle. All they need to do now is make it waterproof and, as a bonus feature, you'll be able to brew a nice cup of tea while it charges.
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They are: passing a large current through the battery's internal resistance will generate a lot of heating which is why batteries get warm while charging. To charge a 4,000 mAh battery to 50% in 3 minutes will take a current of 40A which is around three times the current that a plug can safely carry.
Even though the voltage of this current will be much less than the mains the heating it causes depends on the square of the current. So if the internal resistance is say around 0.3 ohms (just guessing based on this) then the heating power will be about 500W (=I^2R) which is about a quarter the heating power of a kettle.
Something has gone wonky in your math. TFS says it uses a 200 watt charger. You can't dissipate more heat energy than the incoming charging energy. In this house, we obey the laws of thermodynamics.
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Something has gone wonky in your math. TFS says it uses a 200 watt charger.
It's not my maths that is wonky. If we do the maths the other way around you can see the problem. Assuming a standard smart phone battery voltage of 3.8V then the energy in a 4000mAh battery is 4 A * 3.8V * 3600 s = 54720 J. So if you are going to charge that to half capacity in 3 minutes (180 s) you need a minimum power of 0.5*207360 J / 180 s = 152 W. This assumes zero heating just 100% efficient storage of the electrical energy provided. This leaves no more than 48W for heating which means that at a cur
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So, two problems.
First, your statistics are drastically out of date. Most decent higher capacity and higher discharge rated LiPo cells will have roughly 2 to 6 milliohms (0.002 to 0.006 ohms) of internal resistance when brand new. Your assumption is an order of magnitude higher than at least one lithium chemistry available as a product today. LiPo chemistries are common in phones. The form factor of cell phone batteries lends itself to pouch manufacturer.
Second, the 's' in 'mathematics' is the nominativ
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Pretty interesting that you think a 200W charger will generate 500W waste heat, and that you apparently live in a house with 3.8 volt outlets. In my house we obey the laws of thermodynamics.
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Pretty interesting that you think a 200W charger will generate 500W waste heat
I don't it was counter-argument by reductio ad absurdum: you can't charge a lithium battery that rapidly unless there has been at least an order of magnitude reduction in the internal resistance which seems unlikely. I also did not say plug sockets would be at 3.8V - the mention of a plug was simply to show that you are going to have a massive problem with the cable to charge your phone. Current mains power cords cannot handle 40A of current, let alone a typical phone charging cable using USB. So either yo
Re: That's pretty quick! (Score:2)
Interestingly, lithium ion batteries are endothermic while charging. They might need to actively heat the battery pack during charging.
You must never have owned anything with Li-ion batteries.
While there may be some endothermic reactions taking place during charging, the overall process is a decidedly exothermic one. That's why it is important to monitor Li-ion battery temperature rise During a charge-cycle.
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How many battery recharge cycles? (Score:5, Insightful)
Sounds very hard on the battery.
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How often do you expect you would need to do such 0-100% charging?
Most people have chargers at home, at work, and in their car, and charge their phone when they arrive at work or while driving. This was made even easier with wireless charging, basically the charger is where one puts the phone.
In the occasion where one forgot to charge the phone, it is nice to know it can be fully charged in 8 mins. Most people wouldn't mind if that would stress the battery and, say, shorten its lifespan by a few days.
Re:How many battery recharge cycles? (Score:5, Interesting)
As long as it is software configurable to charge more slowly.
e.g. If you plug it in at 11pm to charge "overnight" there's no benefit if it's fully charged by 11:08pm if you don't intend using it until 7am.
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I set my phone to ring at whatever ass-o-clock I have to get up at the next day, and then set it to a pleasing podcast or even youtube relaxing video, then go to sleep with it a few feet away from my head. Similarly, I sleep with my watch on so it can wiggle when the alarm goes off. If I don't have any alarm the next day, then I still might leave it playing something relaxing. If I don't do any of that, then it's sitting on my nightstand a few feet away.
At no point do I ever charge it at night- I expect
Re: How many battery recharge cycles? (Score:1)
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Yeah everything GP said about having the phone nearby as an alarm makes sense. AND since the phone sits in the same spot every night, it makes since to put a charger there.
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but all those semi-full charges may even get counted as complete cycles
It doesn't work that way. You can cycle many more times if you keep the range between, say, 30% and 80% than if you nearly deplete and then charge to full. Or even if you don't nearly deplete, then charge to full. Keeping your state of charge as far as possible from the extremes of 0% and 100% (not that your phone will actually let you get all the way to either extreme) will give you the longest battery life.
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Theoretically, yes. But from personal experience & talking to friends, without trickle charging, the iPhone battery struggles to survive even a day. There is no chance you can end the day at 30%, if you only give it 20-30 mins to charge daily
My guess is that this is a flaw in the iOS power management. Perhaps the device gets confused about the actual state of the battery without regular charges to 100%.
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Yeah, My wife keeps her phone on a table by her bed along with a Kindle and a Kindle Fire HD.
I explained why she should have NO charging devices in the bedroom and that she not store a device under pillows or blankets.
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I keep older chargers around so I can slow charge. The USB ports on computers are good for it too, being mostly limited to 500mA/750mA (for USB 2 and 3 respectively).
Xiaomi's last high speed wireless charger had a fan built in to cool the phone while it charged, but obviously the wired charger can't do that. Maybe they have adopted some of the cooling tech from gaming phones to help.
Watching the video the charge rate starts to drop at 50%. By 99% it's still at a rather incredible 77W.
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The latest update on my Huawei tablet adds a 'Smart Charging' mode. It claims to use AI to learn my charging pattern then stop charging at 80% till it thinks I'll need it to complete charging. Which is a great idea only let down by my complete lack of routine it could learn!
Xiaomi would do better to let me automagically restrict overcharging without having to root their phones than push on with ever more damaging fast charge rates. Fully charged in 59min is nice, being able to leave it charging all the time
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I have only used fast chargers on all my phones that support it. An if my phone isn't in my hand or pocket it, odds are it is sitting in one of my quick chargers. If that affects the battery life on its, so be it. As long as I can get one days use out of it, then I'm good.
An when I see the performance of the battery go down to an unacceptable level I'll just take it to the local repair shop and have them replace it with a manufactures battery. I mean people act like replacing the battery is like r
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Not if 90% is the new 100%.
So how many times before it explodes? (Score:3)
This seems to be "pushing the envelope" quite a bit - I wouldn't' want to do this kind of charging too often.
Re: So how many times before it explodes? (Score:3)
Chinese users regularly kill their batteries. The do Netflix like apps and many other things. My Chinese girlfriend has a bad habits of not even fully charging her phone over night. Power banks exist everywhere and easily can be accessed with a few cashless methods. You commonly see people using these. My phone is Huawei and double the mentioned battery size. I only charge at night but I also only use PCs for video content which is not like the average user here.
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I started with desktops in 1978 (TRS-80) and worked with PCs all my working career and I still use them today at the house.
I use my phone for an occasional text and Weatherbug.
Re: So how many times before it explodes? (Score:2)
Right. I grew up the same way in the 80s with a father who built some of the first "mobile computers". However as the market developed later in China, especially around the golden age of smart phones, there culture has largely embraced them.
At work people probably have a cheap desktop and at home other smart devices but in general the phone is used as a primary form of communication in various forms, a gaming platform, and an entertainment platform.
There are gamers who have better PCs but there are also a
Irrelevant today? (Score:2)
The last two phones I've had were able to make it a full day of use. So my phone chargers while I'm sleeping anyways.
I hope the trend isn't to create smaller/lighter batteries that need recharging throughout the day.
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The last two phones I've had were able to make it a full day of use. So my phone chargers while I'm sleeping anyways. I hope the trend isn't to create smaller/lighter batteries that need recharging throughout the day.
But you are not the majority and there are always going to be people who forgot to charge their phone and need to plug it up during the day at work.
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No, he is absolutely the majority. Literally no one wants a phone that has to be charged mid day. Normal people do not have to seek out charges at work unless they are making heavy use of their phone that day, and people who really tax their battery with a phone game will not only buy a phone with a bigger battery, but often have a third party charger just in case.
Re: Irrelevant today? (Score:1)
Absolutely nobody wants a phone that has to be charged each day, instead of e.g. each week, that has no tactile feedback, that has tiny imaginary keys, and that has no headpjone jack or ports.
Yet, here we are.
As CEO Ned Flanders used to say: Prepare your diddly hole!
Re: Irrelevant today? (Score:2)
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When a device actually has some capability to do things besides being a glorified email terminal, it turns out it gets used way more often. And when used more often, that means power consumption.
Battery life? (Score:3)
I mean 8 minutes to charge is nice but if the battery lasts 16 minutes, it doesn't say much. I am of course exaggerating.
With a 4,000mAh battery, I would expect the charge to last 2 days of regular usage.
Now mileage varies per person but I know I am using about 2 hours tops per day of phone calls, use apps sparingly as I am not a big youtube user on a phone and Facebook isn't something too important so two days is realistic. It may not be so much for others but the point is, can this phone's battery match the experience I am getting with my current phone?
Re: Battery life? (Score:2)
Chinese consumers are 3x to 4x the daily usage you mention on average. They watch movies and play games on the phone more than any other culture. They are probably getting half a day of usage from this battery size.
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Maybe this is the explanation to their falling birth rates?
Re: Battery life? (Score:3)
Just to be clear I am an expat in China. I work with 5 ladies. None want Children. My Girlfriend is traditional and she only wants one. I have tried to talk her into two -- just want to do my part! My boss is two generations above them and one for me. She has no children and decided they took too much work. In America, you will find more stay at home mothers than China. There is a lot of desire from Chinese women for professional success and independence. Combined with a lack of sympathy from most Ch
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> social development lowers birthrates and rapid social development rapidly lowers it
Cultural and religious factors also influence it a lot, and I think the world makes a mistake if it assumes that patterns in the Global North (I count China into this) generalize to the Global South. The latter, eg. Subsaharan Africa, is much poorer, and child counts are very high, but a reduction of poverty may not have as strong an impact on child count. Maybe even if there were rapid social development there.
Re: Battery life? (Score:2)
This is fair. Development strongly correlations to birthrates but I think you are very right about culture/religion playing a significant role too.
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China just raised its quota of kids to 3 children from 2.
China allows three children in major policy shift [bbc.co.uk]
Re: Battery life? (Score:2)
I know. They did this because there are too many who want no children or just one. They figure if they raise it to three, some of those with two would take up the offer.
I wouldn't be surprised if they eventually eliminate it again later. I personally think the one-child policy was a smart move for China and the world, despite the individual cruelty of it. I think other nations may consider similar limits in the future but China hasn't modernized not socialized enough yet to weather a prolonged period of
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I think modernization of Chinese society has more to do with that, just like in literally every other modern nation.
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Can this be applied to battery electric vehicles? (Score:1)
If we have the technology to recharge a cell phone in 8 minutes then surely we can charge an electric car, semi tractor, or airplane in 8 minutes, right?
No, that's wrong. The power to charge a small battery in a cell phone is very different than charging a large battery. One is the power connection. A cell phone is taking 120 watts to charge in 8 minutes. I've done the math on charging something like a Tesla in that time and the amps and volts involved get very high. Something that takes far more energ
Re: Can this be applied to battery electric vehicl (Score:5, Informative)
About TFA, the way you get a 8-minute charge time for a cell phone is you install a 12,000mAh battery, but you tell everyone it's a 8000mAh battery. Then when the phone is "fully charged" it's actually only 70% charged. That's the typical way to get a "100% charge" in an 8-minute charge time while still having relatively cool charging, good cycle life, etc. this is legitimate engineering practice and the "100%" level is always a de-rates value based on the design intent and end use.
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That, and use a 200W charger instead of a 10 to 20W charger.
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Actually, size of the battery is relatively unrelated to charge time.
I know that. The problem is the impractically large wires needed to charge a BEV in 8 minutes. I thought I was clear on that.
The Tesla Megacharger for the Tesla Semi is rated for over a megawatt and that is supposed to get the semi tractor to 400 miles of range in 30 minutes. To get the same energy in 8 minutes would mean something like 4 megawatts. That is if Tesla's claims are to be believed, and Tesla's most famous spokesman is known to exaggerate. The claim was merely "over a megawatt" for the Mega
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I think practical BEVs you listed are enough to keep them alive.
Granted for long haul we need something else but you are not right that the same technology can be reused on short haul, examples:
* electric trains
* future mini nuclear reactors for large cargo ships - at the moment this is very uneconomical but hopefully we will have progress here
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Why do you say that? What are they going to do, crack it open and kill themselves with handling nuclear material fresh from a reactor without proper equipment?
Or are you just part of the OMG NUCLEAR BAD set?
Re: Can this be applied to battery electric vehic (Score:2)
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How big of a cable would one need to handle 5 megawatts or so?
Surprisingly thin, actually! The cables in your (european) house can handle 230volts at 16 amps, for about 3.5 megawatts, and those are only 2.5mm^2 (times two). At 2x4mm2, you can run 400V at 16 amps, for just over 6 megawatts, which means you need two wires, each with a copper core about 2.25mm wide.
Of course, that's for shorter distances. The longer the distance, the higher the voltage drop, and the less power you get at your destination. You also wouldn't want a solid-core cable, because that would b
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230V * 16A = 3680W, so 3.5kW, not megawatts. A megawatt cable requires a cross section of more than 1000mm^2, the conductor itself then needs to be about the thickness of a large finger.
So yes, still doable but we are now talking easily about more than 20kg per meter, so not something you can easily drag to your truck.
Re: Can this be applied to battery electric vehic (Score:2)
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Some people's fingers are larger than others.
That could explain how one could type "kilo" instead of "mega". Or not. I fat finger my typing once in a while, just not that bad.
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So yes, still doable but we are now talking easily about more than 20kg per meter, so not something you can easily drag to your truck.
To be fair, the hoses used to move aviation fuel from the tanker truck into the plane are also quite heavy per meter. Planes are refueled by large men wearing gloves and putting their backs into it, not petite women in frocks and sunhats.
But unlike aviation fuel, it's entirely reasonable to embed a recharging outlet right in the pavement near where the plane parks. The cable can be relatively short, reaching straight up from the pavement to a charge port on the lower curve of the fuselage. You'd want to
Re: Can this be applied to battery electric vehic (Score:2)
Most overhead train wires are only about 1cm thick and can deliver multiple megawatts to power a train. Downside of course is that they keep the amperage (and hence cable size) low by using 15-25KV and I'm not sure that would be a good idea for consumer use!
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Or once the connection is made and the charging computer in the vehicle and the charging computer in the charger talk and figure out what each side is capable of, go to a really high voltage, which would decrease current needs at the same wattage.
Its the current that makes the cable thickness necessary - nobody in their right mind would use 240V charging for any kind of "fast" delivery of that kind of wattage. Step that shit up into the kV range and cut the cable thickness by a large percentage. You would
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Here in Europe, we have 43kW AC charging (mostly for the Renault Zoe). AFAIK, that uses 240v so the current is pretty high but still manageable.
My 7.5kW home charger uses around 32A at 240V so 43kW is around 180A.
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The Tesla wall connectors that are used for "destination chargers" as well as what you install in your house are 240VAC @ up to 60A, selectable by a rotary switch under the cover. What gets to the car is anyone's guess, but the cable doesn't seem massively thick or uneasy to bend, so I'm guessing they're doing DC conversion in that box and sending a higher voltage down the bit you connect to the car.
The superchargers however use fast DC charging at up to 250kW so they're doing a voltage conversion anyway,
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About TFA, the way you get a 8-minute charge time for a cell phone is you install a 12,000mAh battery, but you tell everyone it's a 8000mAh battery. Then when the phone is "fully charged" it's actually only 70% charged. That's the typical way to get a "100% charge" in an 8-minute charge time while still having relatively cool charging, good cycle life, etc. this is legitimate engineering practice and the "100%" level is always a de-rates value based on the design intent and end use.
That would be good engineering, but I wouldn't be too sure about it. My OnePlus phone has a proprietary 65 W charging system, which charges at a 3C rate up to 40% and then tapers down to 1.3C (50%-90+%), switching to constant voltage when it reaches 4.45 V. The 100% level is when the charge current drops to 0.2C or so at 4.45 V but it will keep charging until the current is near-zero). The numbers suggest that you'd need to de-rate this type of Li-Po cells by at least a factor 2.5 to work with ultrahigh cha
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If I charge this phone from a standard USB-PD laptop power supply, it charges initially at 1.4C (-50%) tapering down to 0.45C (70%-90+%) and finishing with 4.45 V constant voltage. For some reason, the charge current is 0.45C even though the electronics are capable of 1.4C. Is it to make the proprietary charger look better? Or is it to offer the user a way to extend the battery life?
My guess this is because USB-PD limits 5 volt charging to 3 amps while the Warp Charge spec allows for 5 volts up to 6 amps. I'm guessing that Apple iPhones and iPads get faster charging with USB-PD with extra circuitry to handle 9 volt or even 15 volt charging from USB-PD. Keeping the phone to only charging at 5 volts is likely a cost saving choice by OnePlus. Making the phones incapable of charging from USB-PD at higher power will have the side benefit (for OnePlus) of vendor lock-in. OnePlus uses the
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I'd actually be fine if they were under-rating a battery like that to deliver faster charge time, because it would also deliver much more battery health later in the device's life at the trade-off cost of a little more weight. You know, as long as the reduced capacity comes out of the hidden 33%.
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> For electric vehicles that's not so simple
I don't know if you ever crack up the voltage on a cellphone. I'd recommend cranking up the amperage, and having multiple chargeable electric cells similar to how Tesla does it (and probably all electric cars), all smallish cells lined up in parallel so that they can all be charged or drained at the same time.
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Cranking up current requires thicker cables to transmit without higher resistance - go too far and now you're in the territory of only using certain cables to charge, and having to figure out what cable is connected somehow so you don't burn out some shitty generic cheapo USB cable that's been kicking around someone's closet for 7 years because it uses 22 gauge. wire instead of 18 gauge.
There really isn't a reason why higher voltage couldn't be used, for various values of "higher voltage" - remaining tied t
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Non-USB chargers use the USB data lines for checking if a cable has the wiring for their spec. This means the cable is the device, not the phone or whatever is being charged. This means the device being charged can't use that cable for USB data. It also means that the faster charge rates only happen if the cable, phone, and charger all meet this non-USB spec. This has caused a lot of questions on support forums on why someone is not getting the charge rate they expect.
Some USB charging specs will use th
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It's 200W, not 120.
But in any case, of course you can do it in a car. It just gets really expensive in extra parts and controllers and big fat connectors that have to be bolted on instead of plugged in. That's really the limitation with an EV; making it so complete idiots can operate the charger. And that means a plug, and fairly lightweight cables.
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It's 200W, not 120.
Yep, got the wired charger mixed up with the wireless charger.
But in any case, of course you can do it in a car. It just gets really expensive in extra parts and controllers and big fat connectors that have to be bolted on instead of plugged in. That's really the limitation with an EV; making it so complete idiots can operate the charger. And that means a plug, and fairly lightweight cables.
We can do it in a car because a car is not expected to go long distances carrying a lot of cargo. To make this work on a long haul truck, an airplane, cargo ship, or really anything bigger than a common commuter car, is not trivial. The Tesla Cybertruck is not going to pull a camper trailer all that far, even though there's no lack of power and traction to the wheels. The problem is energy density of a battery, and the time needed to put energ
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For a commercial truck it isn't a big deal, the cable that you plug into the vehicle can be high voltage, and you can step it down right at the battery.
It doesn't have to be safe for idiots to handle, the rules are different for business users and employees. You don't need a professional driver or mechanic, the difference is in the liability and insurance rules. With the general public, you have to protect them from coming into contact with the high voltage, with business users you just need proper warnings
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My guess is that we will see stations dispensing some kind of liquid fuel for a fast "recharge" of vehicles. Something dense in energy, liquid at atmospheric pressures and temperatures we see in most every place on the planet, and burns in air, perhaps a hydrocarbon. It can be brought to these stations by truck, train, or pipes. Using the right technology we can produce them with a low carbon energy source like solar, wind, or nuclear fission, and using raw material we can literally pull from the sky.
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Now do the math on a semi tractor, which by some estimates put the mass of the battery at over 11 tonnes. A Carnegie Mellon College of Engineering study in 2017 estimated the mass of a Tesla Semi battery at 11,800 kg.
For 900 miles of range a truck would need a battery with 3100 kWh of energy and weigh in at about 27 tons. With the maximum weight allowed for a truck on highways in the USA being 36 tons the truck would have little room left for cargo. The battery weighs 27 tons from a 36 ton max, the truck
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Musk has said recently that the 300 mile semi will have a 500kWh pack, based on the 167.7Wh/kg of the Model 3 that puts the pack weight at ~3.3 tons, the fuel tanks on a typical semi are about that when fueled. Even if you double that pack weight for the 500 mile semi you're still in the same range as the drivetrain with fuel for a long haul semi, I wouldn't expect significant cargo penalties vs traditional tractors.
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I trust Carnegie Mellon over a salesman known for exaggeration.
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Um, they did a paper after the Tesla semi was announced and redid their calculations based on the .35Cd that Musk mentioned, suddenly cost was the primary barrier, with a target of $150/kWh for the pack (something Tesla has already achieved based on estimates derived from model differences).
Re: Can this be applied to battery electric vehicl (Score:2)
Then to get it going again it needs an hour to charge
The truck stop hookers will appreciate this.
How many chargers does it last ? (Score:1)
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You don't *have* to use the super high-speed charger every single time you charge the phone. My OnePlus 7 Pro supports 50W charging, which I use when I'm traveling because it's convenient to plug in for 30 minutes and get half the battery back. However, day to day is done with a 10W wireless charger accessory that is slipped between the case and the phone - it's slow, but I don't care when I'm asleep.
Doable with two "batteries" (Score:2)
Have a fast-charging supercapacitor, then use it to both run the phone and charge the main battery.
Like a hybrid car's combustion engine can do both - drive the car, and charge the electric motor's battery.
Car Batteries (Score:1)
Galaxy Note 7.1 (Score:1)
Galaxy Note 7.1
Kaboom (Score:2)
I can charge a whole city in less than 3 seconds (Score:2)
Coincidentally, I'm a chinese ally!
Tesla Superchargers: (Score:2)
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Sure, with the proper cable converter*
*proper converters available on the market today include Tesla Model S, Tesla Model X, Tesla Model 3, Tesla Model Y.
Awesome news (Score:2)
but it's only got (Score:1)
Lifetime (Score:2)
What's the lifetime of a battery that gets that treatment?
Nice.... (Score:2)
Nice way to start a bonfire in 9 minutes.
heres why (Score:2)
It takes a lot of power to monitor you 24/7 and send all that data to the Chinese government.