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How to calculate cost for charging my Ninebot One?


Torsten Daerr
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Okay, I do admit I should know this myself but I'm not sure so I'm asking you hoping you forgive me for asking such a stupid question. I'm trying to calculate the cost for charging my Ninebot One. It has a 240Wh battery, which is 0,24 KWh, correct? So, if the cost for 1KWh is let's say 25 cent, it cost only 6 Cent to fully charge the battery? It somehow seems way too low which means I can't get the calculation right. Who can help? Many thanks in advance. 

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You also have to consider the charger efficiency and the heat losses. If you assume an efficiency of 80% (probably less than the real one), you have to add 25% to your calculated value (0,8/1 = 1/1,25). So that's 7,5 cents according to your calculations.

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Yeah I think your calculation is correct. I also asked this question using my electric bill and costs, and came up with 8-15 cents to charge 840 kwh (??) on my ks14.

EUCs may be the most efficient vehicle ever devised, surprisingly even more efficient than e-bikes.

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17 hours ago, Rotciv said:

To be more accurate, you could use a meter between the charger and the outlet. This will give you a better usage reading to account for efficiency. 

I have done exactly this, and determined that to carry 110+ kg, my cost is 0.75c per kilometre

This is what I bought (there will be similar available wherever you might be)… http://www.elto.co.nz/product-catalogue/electrical-accesories/accessories/power-meter

And here is a guy who made his own... http://thatpowerguy.nz/building-home-power-monitor/

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I calculated about 2.5c (US) for my round trip commute (10 miles) or about 0.25c per mile. This was using a charge doctor to measure power in and an estimate for transformer losses. What I don't recall is if this was calculated using the expensive first x amount of Wh my utility charges me over the top for or the cheaper rate for all consumption above x amount. There was quite a difference in price. Thieving b*$^#$ds.

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6 hours ago, Torsten Daerr said:

Do you mean New Zealand cents? It still would be about 10 times as much as my costs. How is this possible? 

You need to remember that I have to pay the "fat guy" tax to the electricity gods.

There are also a lot of other factors, such as riding style, terrain and even the age of the battery that will alter the running (rolling?) cost.

Edited by The Fat Unicyclist
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31 minutes ago, Torsten Daerr said:

I used to have to pay the fat guy tax to the electric unicycle gods too until I found a way to get rid of it. If you like I'll share it with you for a small one time fee ?

The Fit Unicyclist doesn't have such a great ring to it. One letter. HUGE difference.

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3 hours ago, Torsten Daerr said:

How can and why should it get cheaper than 2,5 cents per 10 kilometer :-)? 

You must also take the consideration that electricity costs vary based on the company you get it from. In example, If you buy a big solar panel and some battery storage, then charging becomes free. But the time it would take to make it pay for itself would be quite some time as solar panels are expensive.

In my area, we get our electricity from rivers, wind, solar, and there may be some old coal areas out here. Because of this, during spring when the snow melts, the electricity is cheaper. It is also more expensive for solar electricity during night, high demand, no sunlight. But during the day time, most people are at work, electricity costs are lower. It really depends on your electric company. 

I looked up the math for charging my 2011 Nissan Leaf and for a full charge it costs about 25 cents. Chargers in the area that you pay to use cost either $2 per use, or something like 25 cents an hour. It fluctuates. So I get about 50 ish miles (the battery is really old, almost 100k miles) for $0.25) if you compare it to say a 2018 Prius. 58 mpg city. with gas costing let us say $3.80 it is still cheaper per mile for the Nissan Leaf. The gas tank for the Prius is 11.3 which is about 600 miles on a full tank compared to the my Leaf which is 50 miles on a charge.

I think I got off track here. But the point is, if it costs me 25 cents to charge an electric car, it should cost WAY less to charge an EUC.

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On ‎7‎/‎13‎/‎2018 at 7:50 AM, WARPed1701D said:

The Fit Unicyclist doesn't have such a great ring to it. One letter. HUGE difference.

Mrs. TFU agrees with you... It would be a HUGE difference...

But as the official crash-test-dummy for Roll.nz, the extra padding is a bonus!  

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  • 1 year later...

My take.  In California electricity in my area is $0.10/kWh.  So to recharge the batteries of 1.6kWh (1600Wh) it would be about $0.20 per full charge.  Assuming efficiency of charging is not 100%.  For $0.20 you can get about 60miles on a Gotway MSX.  So that's $0.20/60 = 0.333 cents/mile !!  Stupidly cheap.  Compare a car that does 40mpg.  $4 per gallon, 10 miles = $1.00, 1 mile = $0.10.  So an EUC is a factor of 30 times more cost effective !!

 

Hope I got the math right because if so that's one hell of a deal !!!

 

All we need now is an adapter for fast chargers like Tesla or EV chargers!!  That would be brilliant.

Edited by Gazza-usa
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44 minutes ago, Gazza-usa said:

My take.  In California electricity in my area is $0.10/kWh.  So to recharge the batteries of 1.6kWh (1600Wh) it would be about $0.20 per full charge.  Assuming efficiency of charging is not 100%.  For $0.20 you can get about 60miles on a Gotway MSX.  So that's $0.20/60 = 0.333 cents/mile !!  Stupidly cheap.  Compare a car that does 40mpg.  $4 per gallon, 10 miles = $1.00, 1 mile = $0.10.  So an EUC is a factor of 30 times more cost effective !!

 

Hope I got the math right because if so that's one hell of a deal !!!

 

All we need now is an adapter for fast chargers like Tesla or EV chargers!!  That would be brilliant.

EUCs, and eBikes/eScooters, aren't quite as cheap as a cent per mile, because the initial cost over the expected lifespan must be factored in.

Because the cost to fully charge a gotway msx from empty to full is about 10-20 cents, one might as well ignore the cost of charging it as long as you own it.

It's easy to see if your EUC is comparable to a car; simply take the cost to buy your EUC and divide by the number of miles you have on it. Until you have double the miles to cost of the EUC ($2000 EUC requires 4000 miles), then your EUC will cost more per mile than your car. Cars, by the way, cost around 50 cents per mile by the owner to operate, but cost the government roughly $6000 per $100,000 of property value, because the infrastructure to support cars is expensive. Their destructive health cost is estimated to be about $2.50 per gallon, while their insurance cost is about $500-$600 per year per automobile.

The takeaway is not that EUCs and their ilk are cheap to operate, but that the private automobile is expensive to operate, so expensive that most people require car loans and most cities require bonds to build roads. They are unaffordable necessities.

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29 minutes ago, LanghamP said:

EUCs, and eBikes/eScooters, aren't quite as cheap as a cent per mile, because the initial cost over the expected lifespan must be factored in.

Because the cost to fully charge a gotway msx from empty to full is about 10-20 cents, one might as well ignore the cost of charging it as long as you own it.

It's easy to see if your EUC is comparable to a car; simply take the cost to buy your EUC and divide by the number of miles you have on it. Until you have double the miles to cost of the EUC ($2000 EUC requires 4000 miles), then your EUC will cost more per mile than your car. Cars, by the way, cost around 50 cents per mile by the owner to operate, but cost the government roughly $6000 per $100,000 of property value, because the infrastructure to support cars is expensive. Their destructive health cost is estimated to be about $2.50 per gallon, while their insurance cost is about $500-$600 per year per automobile.

The takeaway is not that EUCs and their ilk are cheap to operate, but that the private automobile is expensive to operate, so expensive that most people require car loans and most cities require bonds to build roads. They are unaffordable necessities.

I would like to see a spreadsheet with the numbers in.  A car new cost $30K without fuel costs added.  Fuel over the life of the car (let's say 150k miles) is @$4/gal = [150k/40mpg ]* $4 = $15k.  So your vehicle without insurance, taxes etc = $45k.  I'd like to see the comparable cost of an EUC.  I don't know what life you get out of EUCs ? Any ideas ?  20 EUCs at 5k miles would cost $40k = 100k miles.  Is that about right ?

 

I would also add that with urban congestion the way it is you are incredibly unlikely to get 40mpg.  Probably more like 15mpg.  So that drives up the cost of owning a car significantly. If 15mpg, then the cost of fuel over the life of the car is $40k which means your total cost of ownership is $80k over the life of the car !!

Edited by Gazza-usa
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52 minutes ago, Gazza-usa said:

would like to see a spreadsheet with the numbers in.  A car new cost $30K without fuel costs added.  Fuel over the life of the car (let's say 150k miles) is @$4/gal = [150k/40mpg ]* $4 = $15k.  So your vehicle without insurance, taxes etc = $45k.  I'd like to see the comparable cost of an EUC.  I don't know what life you get out of EUCs ? Any ideas ?  20 EUCs at 5k miles would cost $40k = 100k miles.  Is that about right ?

Several of us already did such calculations, and the concensus seemed you could buy between 3 to 4 EUCs every year, if they cost $2000, for how much the average driver spends on a car. I think @Jason McNeilMcNeil mentioned he uses only Uber + wheel to get around.

People who do even the most cursory calculation of the cost of owning a car (the entire cost, not just the owner's cost) quickly come to the conclusion that the private automobile is the path to poverty.

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