Do you think Electric cars ever can be charge with a USB cable plugged into a USB charger?

Discussion in 'Gadget & Internet Hub' started by froggyboy604, Jul 11, 2018.

  1. froggyboy604

    froggyboy604 Moderator Staff Member Moderator

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    It maybe possible to someday charge cheaper low-end electric cars with a USB cable plugged into a USB charger which is plugged into a regular home wall power outlet.

    It may take many more hours to days to fully charge an electric car by using a USB charger because of not being powerful enough. But, it could be better than waiting days to weeks for a new car charger to be delivered to your home, not having enough power to drive home, and having no charger to use, or hiring a tow truck to tow your car to a charging station where you may spend a lot of money on hiring a tow tuck.

    A lot of people also carry around USB external battery pack chargers with a built-in charging battery which maybe useful at charging the car a little bit more, so it can drive an extra few feet or miles to the driver's destination.

    A few more powerful laptops like the Apple Macbook Pro, and Google Pixelbook which uses an Intel i5 or i7 CPU uses a USB-C port for charging, and a more powerful USB charger for charging the laptop, so less powerful 1 to 2 passenger electric cars maybe able to be charge by a USB-C cable.
     
  2. VirusZero

    VirusZero Well-Known Member Full GL Member

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    Not any time soon.

    Current USB 3.0 is limited to 5 volts and 1.5 amp rate. USB-C has ~33 volts and 3.0 amps.
    Electric cars require at least 110 volts at 15amps to charge the car within 8-20 hours (depending on number of batteries). Though they prefer 240 volt system (like dryers use) to charge within 4-6 hours (again, depending on number of batteries).

    It would take somewhere within the vicinity of 176 to 440 hours to charge via USB 3 (and that's presuming the amperage is the same... it's not. So you'd have to multiply the time to charge again by 10. So 1760 to 4400 hours. On the low end that's 73 days to charge.)
    Even using a USB-C charger, it would still take between 24-60 hours (again, this is presuming same amperage... but it's not, so have to multiply the time again... 120 to 300 hours or 5-12 days.)

    You could order a new charger and have it there well before that. In some cases, with next day delivery and depending on where the distribution centre is, the charger might be at your house within 24 hours.
     
  3. Demon_Skeith

    Demon_Skeith Administrator Staff Member Administrator

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    Maybe, some day in the far far future. But current cables would take ages to charge.
     
  4. froggyboy604

    froggyboy604 Moderator Staff Member Moderator

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    I agree, it would take ages to charge. But, very slowly charging an electric car with a USB-C cable and charger can be better than not being able to charge a electric car at all when you are at a home or business which does not have an electric car charger installed.

    Sometimes, you may just need a small amount of electricity by charging with a USB-C cable for a few hours to days, so you do not run out of electricity before reaching a better electric car charger located at a parking lot which can be 1 to 2 blocks away from your friends or family members house. Waiting many hours charge a electric car where it has 5% more power after charging for a few hours with a USB cable, can be better than towing a empty car to a charging station.

    If you are having serious money problems, very slowly charging an electric car with an empty battery by USB-C charger at a friend's house maybe your only choice because you can't afford to hire a tow truck driver to tow your electric car to an electric charging station. It can cost a lot of money to hire a Tow truck to tow your car to another location like a electric car charging station.
     
  5. VirusZero

    VirusZero Well-Known Member Full GL Member

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    Would it even actually charge though?

    I mean most vehicles have some draw on the battery even when they're "off". Stereos, a clock, alarm systems, remote start systems, GPS, etc... So I guess the more important question is would the USB port even be able to supply enough power to counter those draws? If not then it wouldn't matter how long you plugged the vehicle in via usb for because it simply would never charge.

    If you're having money problems and need to charge a battery somehow it'd probably better for you to carry a portable booster pack so you can give some actual charge when necessary.

    Though if you're having money problems, going with an electric vehicle is likely not the best answer. They tend to be way more expensive than a traditional car. (The cheapest electric cars tend to start at $30,000. You can get a brand new gas car, like a Kia or Hyundai, for half that. Once you get into the 30,000 range you might as well look at Volkswagen or Honda then which give usually very good fuel mileage and are known for quality... )
    Even buying used you're unlike to find many electric cars (since they're kinda new and not many around yet). So it's pretty much going to be a gas car... Which you can get a decent one for under $3,000.

    Additionally repairs on electric vehicles tend to be extremely expensive. I mean buying a battery for a regular car is within the $130 range. Electric cars can use between 4 and 8 of them (if they use standard car batteries). So when the batteries in them start to go it's a very expensive fix. Plus, like for the smart car, they're often proprietary batteries too so you can't even go to a standard car shop and buy any old battery. (Smart cars use a lithium-ion battery more akin to a smartphone.)

    Also, is it actually cheaper to run an electric car? Let's say the average fuel economy for cars is 30mpg with a 10 gallon tank... So your range is roughly 300 miles (500 kilometers for non-Americans) on full. Average price of fuel in the USA is ~2.54 at the moment. So roughly $25.4 to fill a normal car.

    For electric cars the price depends on when/where you recharge. At home during peak usage? Maybe as much as 47 cents per kilowatt hour. Which means to get a full charge means you could pay anywhere from 2.82 to 5.64 to go approx 63 miles.
    To put that in comparison...
    To go 300 miles in a smart car you'd be looking at prices of 13.42 to 26.84... And 4.7 stops to recharge (for up to 12 hours per charge).
    Or if you charge at home during off peak hours it could be much lower... But you'd have to pay way more attention to the charging rates/times to get the best value. And that'd mean a lot more careful planning.
     
  6. froggyboy604

    froggyboy604 Moderator Staff Member Moderator

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    Most Electric cars still have a smaller box sized 12 Volt regular car battery for running accessories like the clock, stereo, radio, gps, and other electronics according to https://www.quora.com/Why-do-Tesla-cars-have-a-12-volt-starter-battery

    "The car industry is de facto standardised on 12v electrical systems. The lights, horn, radio, and just about everything else runs on 12 volts, as do all the accessories that you can plug in. So the Tesla needs a 12v system."

    -Peter Murias, Automotive engineer, maintain my own vehicles
    Answered Apr 12, 2016

    The 12V battery can go dead if you don't drive your car for a long time, so you need to jump start it, and plugging in your electric car charger may not work at charging the 12V battery if the car charger was not designed to charge both batteries.

    Carrying a battery booster pack design for electric cars will be the best thing to do if you have money problems. But, drivers don't always prepare themselves for running out of electricity. Using laptop USB-C charger may very slowly charge up a car battery where it is charge a few extra percentages like 5% to drive a short distance to the closest building with a faster electric car charger.

    Most people with money problems will pick a gas car since there are a lot of reliable used gas cars which people can buy for a few thousand dollars, and some new cars like the Nissan Versa which is sometimes on sale for $10000 or less for the manual transmission version.

    Some people with money problems may pick an electric car because of the high price of gas because of expensive local gas taxes and they think gas prices will become more expensive because of a war, low gas supply crisis, or greedy oil companies which may raise the price of gas in the future to earn more money. There are also some tax savings when buying a electric car if your government gives tax discounts to electric car buyers.

    There are a few more affordable electric like the Renault Twizy which cost $17,000 Canadian dollars/$13,800 USD according to Renault Twizy To Be Sold In Canada From $17,000 It has 2 seats, and an automatic transmission. But, the cheapest model of the Twizy has a top speed of 40 km/h/25 mph, so it is not designed with a high speed limit, so a faster similarly priced gas car like a Hyundai Accent sedan would be a better choice.

    When electric car becomes more popular, the price of batteries and electric car parts may become cheaper as more third-party car parts makers make parts for electric cars.

    The price of gas and electricity can become more expensive and cheaper depending on how much energy companies decide to sell their gas or electricity for. I think one of the advantages of electricity is you can generate your own electricity with solar panels, a wind turbine, etc and use the electricity you generated to help power your house, and sell un-used electricity back to the power company if you are generating too much electricity which you are not using.
     
    Last edited: Jul 17, 2018

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