Thank you very much for this. Because of the considerate explanation makes me understand this volt amp wh thing. I’ve struggled for years to understand it
thank u for this good video.can you told me how many watt-h consume and how many watt -h/km consume according this result.battery -72v/224AH vehicles total run is 120 km at 45km/H speed.and continuous current is 76amp .
This calcutation shows that battery AH required for driving motor only. With the help of this calculation we can't calculate range. Because if acc. To you top speed you have considered 70kmph and average is 35 kmph. If i choose top speed 100kmph and average 50kmph for the same calculation and values as you showed above. Then 50kmph mileage for 48volt 40 AH battery pack??
One more thing calculation is same and all values is same but i changes top speed 70kmph to 100kmph and now average is 50kmph so what will be range in kilometer???
Hi I need to know how u selected 35kmph for 40 Amp hour, If vehicle is running at 60kmph then what is the BA power consumption, So my question is how u selected 35kmph for 40 AMP HR
hello , thanks for the video . there is something missing here regarding the vehicle speed. what i sthe connection between speed and the Ah of the battery and how can we include it in the calculations because according to your calculations you didn't include the velocity of the car in deriving the Ah
Sir nice video but can u tell me how to calculate the volt of the motor. U have only told about how to calculate the power of the motor. Now i need to know how to calculate the voltage of motor.
Appreciate the video. Plz help... 3k 72v, bldc motor, top speed 60 kmph, range 20km/ day. Weight of load, including kerb weight of car and occupants, 900 kg. What should be the ideal battery specs?
You can't understand the explanation. The top speed assumed is 70kmph. The vehicle at rest is zero. Hence the average speed of bike is 35kmph. If you drive the bike at average speed of 35kmph, you will reach 35km in 1 hour. Likewise calculation is moving. Likewise if top speed I want to choose is 100kmph. The average speed of bike is 50kmph. Learn some basic science. The video has been worked very hard to explain. It has sense.
If motor power rating is 100 watt means 12v 8amps ... if I will directly connect the motor to 12v 20 amps battery .. does it run and work double or not
@@AllAboutEvehicles sorry bro I can calculate this speed through your previous video. For example 8okmbh bike required 5.5 kW motor right. So I came to clear information
I wanted to start small startup company I am working on research to continue the vehicle operation upto destination without depending on limited mileage. The battery will be charging with minimal charging power on running condition by the generator and rest of the generator power will takeover the motor operation. only constraints is that the generator could not takeover the fully discharged battery and motor
*Hello Sir , Please Explain me* "Following two batteries are used for two 4-wheeler electric vehicle for city operation (Average driving is 30km per day). Which battery needs first replacement?
Vehicle. Range Cycle Life Alpha - 600 km 500 cycle Beta - 150 km 1500 cycle
Lets make a review of the working sir! If the motor is rated 1500 watt and the batteries efficiency is only 80% why then are we getting an increased value of 1875 watt instead of reduced figure 1500 watt minus 80%??
Bro, can you tell, how much external battery capacity will be required to charge a Electric bike with Power of 5.5W and Battery capacity 3.9KWh.. I am just trying to understand due to current issues of home charging a bike without an avaialble parking space, can we try using a portable battery to charge an EV instead? any advise is appreciated pls.
@@AllAboutEvehicles Thanks, there are portable chargers available abroad but very expensive also some available locally but not sure what capacity will be enough. If we apply the same concept of home charging with 6 amp and use an battery which we use in our home inverters we could establish this? In either scenario taking your math example how much capacity external battery will be required pls?
All that is good. The weight factor should also be calculated in this. Without taking in consideration the weight of the vehicle or bike the calculation is incomplete.
If I change some components inside the LIB battery means how can I compare the calc of the normal' stand by time and changed compound battery stand by time
@@AllAboutEvehicles Yeah I understand from your video about Watt and Voltage of motor but as I doubt about the operating voltage of the motor, if it says that operating 72V but if I only have 60V Battery, can it work together? And thank you for your answer
Slight contradiction I guess at 6:21 secs, on what basis it is concluded that for 35km/hr battery AH will be 40, hve you crosschecked with physical multimeters in Vehicle for the current (ampere )value Eg - you could have taken avg speed as 40km/hr then same 48V 40AH would hve provided 40 km range is it right ??? Correct me if I am wrong.
I want to build electric bike with using unlong LTO (lithium titanate oxcide) cell Its voltage is only 2.3 volt but its lifecycle ia very long How much cell needed to build 48 v battry pack!!
70kmph is top speed...you will not always ride at top speed... 20 kmph..40...50...60...70 ..like that at different road conditions Kindly tell your correct requirement
@@AllAboutEvehicles yes, couse i wanna take the battery from my electric scooter Dualtron ultra witch is 60v 35 ah , and the motors are 5400w , and put & convert a normal bike in one electric , and need buy a 500w motor. and controler, because i have already the battery.. but my range is bigger with 5400watts , then 500w ... What i miss ?
We know the top speed of ebike...(in this case 70 kmph). The low speed is 0 kmph So average will be 35kmph If top speed is 80kmph, then average speed is 40 kmph
Hi, Your effort to explain the math is good but it is very general / average calculation which can lead to incorrect selection of battery capacity. And if it is Li-ion then you can imagine the cost. You have not considered torque of vehicle which is directly related to current. At different speeds there will be different torque requirement. At different torque there will be different current consumption by the motor. Also, many of the times during the journey the throttling of the vehicle may vary many times or zero at times even when the vehicle is in movement. Calculation of that duration is not considered. different vehicles will have different weight and loading patterns which you have not considered. The actual way is to have analytical data of city and highway ride of the specific vehicle where current consumption is noted as a pattern and then the battery is designed as per the pattern for a given weight, motor wattage and loading. Do you have such calculation ????????
This is basic calculation. We should not stop with it. We can create simulink models with different driving cycles which will result in maximum torque requirements, battery capacity, motor power requirements.
Everything is fine but how did u take 35 kmph as average speed.......and the ampere magnitude you found at first ....won't it be specified in the motor? These are the doubts anyone who knows pls reply
Can you please upload about moter and moter controller Amp selection Without knowing the output watts of moter controllers Because in market moter controller came with Amp and voltage
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Your explanation very clear and good for understanding.
Good job ! nicely done ! I am in my late 40s. engineer. I was searching/looking for this. Nice refresher course ! This is best video by far I found.
Thanks bro for the wonderful video
Very nice current explanation good video thank you
In the last part of the video u mentioned 35km mileage.. Is it that motor's top speed?
Nice and clear explanation
Very nice explanation
Best video ...
Thank u so much sir 😍
A very good ilstration
Very very nice sir 👍👍👍👍👍
Thank you very much for this. Because of the considerate explanation makes me understand this volt amp wh thing. I’ve struggled for years to understand it
thank, bro can you eksplain me what the function we calculate Ampere BLDC (31,25 Amp) as step 1? because the next step isnot used
Thank you so much bro
so i have a 48v 21AH battery would i be able to run a 750watt rear hub motor with a 22a controller safely any input please
thank u for this good video.can you told me how many watt-h consume and how many watt -h/km consume according this result.battery -72v/224AH
vehicles total run is 120 km at 45km/H speed.and continuous current is 76amp .
Thanks
This calcutation shows that battery AH required for driving motor only. With the help of this calculation we can't calculate range. Because if acc. To you top speed you have considered 70kmph and average is 35 kmph. If i choose top speed 100kmph and average 50kmph for the same calculation and values as you showed above. Then 50kmph mileage for 48volt 40 AH battery pack??
One more thing calculation is same and all values is same but i changes top speed 70kmph to 100kmph and now average is 50kmph so what will be range in kilometer???
Very well explained.
If we increase volt from 48V to 60v or 72V & keep 40Ah then what happens
Hi I need to know how u selected 35kmph for 40 Amp hour,
If vehicle is running at 60kmph then what is the BA power consumption,
So my question is how u selected 35kmph for 40 AMP HR
Please sir post more about E vehicle design
How ur determining the 35 kmph speed..... Pls explain if we increase speed to 60kmph and load
nice video. If the bike is running at 25kmph then what will be the mileage for the same 48v 40Ah battery
?
hello , thanks for the video . there is something missing here regarding the vehicle speed. what i sthe connection between speed and the Ah of the battery and how can we include it in the calculations because according to your calculations you didn't include the velocity of the car in deriving the Ah
Sir nice video but can u tell me how to calculate the volt of the motor.
U have only told about how to calculate the power of the motor.
Now i need to know how to calculate the voltage of motor.
Sir please tell me about can 1500watt bdlc hub motor carries 200kg of weight??
Appreciate the video. Plz help...
3k 72v, bldc motor, top speed 60 kmph, range 20km/ day. Weight of load, including kerb weight of car and occupants, 900 kg. What should be the ideal battery specs?
Love your work mate.
If we want to increase the speed to 50 km/h & range 100 km then which pack of battery must be use
Good job bro
Bro...thanks for the video...can u tell me how much capacity required for 72v battery to run for 150km/charge and acceleration of about 5.5m/so....
You can calculate using the same formula
How you calculate motor power its rated or peak
If i am using 4 batteries each 24 v and 120ah connected in series so 48v then what will be running time only 120ah or
Power of motor, capacity of battery, mileage/ Klm. why is it only people from India eho seem to do these videos. Thanks for the Info.
How does a 48v 40ah is giving 100km milage bro???
With a 2000w motor!!!
Can you please explain 🙏
Bro can u suggest me motor which can run upto 70kmh to 80kmh
Can u share the vehicle ur going to retrofit?
Motorcycle or car or scooter?
Is it only for lithium ion battery, what about lead acid battery
If my amp hr of motor is 20ah and if I use 42ah battery pack then it will be differs in range or speed ?
Technically ur specification of motor is wrong. Motor specification will be in watts.
@@AllAboutEvehicles I mean motor tacking 20 amps of currents
Tell your clear cut motor specification correctly..we can't conform range and speed blindly with single data.
What is the difference between 24 volt vs 36 volt vs 48 volt with 250 Watts motor.which is the best to buy for longer distances with good mileage.
Sir pls reply my message
Your question is wrong.
For getting good mileage u should have told the battery capacity....
How can we know that a maximum speed of a specific emotor
(for example, how can u say that 1500w motor gives 35km range)
Pls reply bro
Complete explanation has been given in the video..
Try another example like 750 watts and calculate the range
I agree. The adhoc assumption of 35 kmph does not make sense. Why not 20 kmph instead of 35 kmph?
@@anindyaroy1719, seriously it does not make any sense
You can't understand the explanation. The top speed assumed is 70kmph.
The vehicle at rest is zero.
Hence the average speed of bike is 35kmph.
If you drive the bike at average speed of 35kmph, you will reach 35km in 1 hour. Likewise calculation is moving.
Likewise if top speed I want to choose is 100kmph.
The average speed of bike is 50kmph.
Learn some basic science.
The video has been worked very hard to explain. It has sense.
If we increase the voltage is there any issues...what if we go for 60 Volts and 72 volts battery ..will it be more expensive
Will explain this in upcoming video...keep in touch
If motor power rating is 100 watt means 12v 8amps ... if I will directly connect the motor to 12v 20 amps battery .. does it run and work double or not
if 250 watt of mottor
and voltage is 36 v how much battery is neede for 100 km
Bro? For this calculation which use nominal motor power or peek power?
Nominal power
I have 4500 watt motor .48v to run one hour .what is battery required
Sir I am choos 3000watt,72volts BLDC hub motor
Witch capacity battery choos for 300 km range
Do calculation in the same way as given in video. Try in reverse also.
Thanks Sr, but if we have 2 motors should we consider one of them or two ?
Tell about the application in detail.
@@AllAboutEvehicles same as your application but if we have 2 motors instead of one motor, should we multiply the power by 2 ? Or what?
@@mo7d_saleh did u find ur answer?
36v 350watt hub motor can run with 36v 2 Ah battery? I mean manually check the motor condition wether working or not.
Not installed bicycle
Motor watt is 350...so greater battery pack will do it.
@@AllAboutEvehicles ok noted. But are you sure 3Ah power not enough for 350 hub motor?
Not for the performance
Please answer how did you fix the 36 kmph speed for the calculation????
Top speed I took is 70kmphr. Average is 35kmphr
@@AllAboutEvehicles sorry bro I can calculate this speed through your previous video. For example 8okmbh bike required 5.5 kW motor right. So I came to clear information
@@AllAboutEvehicles but I can't understand this answer anyway thanks
I wanted to start small startup company I am working on research to continue the vehicle operation upto destination without depending on limited mileage. The battery will be charging with minimal charging power on running condition by the generator and rest of the generator power will takeover the motor operation. only constraints is that the generator could not takeover the fully discharged battery and motor
*Hello Sir , Please Explain me* "Following two batteries are used for two 4-wheeler electric vehicle for city operation (Average driving is 30km per day). Which battery needs first replacement?
Vehicle. Range Cycle Life
Alpha - 600 km 500 cycle
Beta - 150 km 1500 cycle
sir 60v and 24ah will give approx how much km on 35 km
Depends on motor load, vehicle weight, number of passengers, type of road conditions, tyre pressure.
tentatively on an average
Super
How many power is needed to run 48v 1000watts bldc motor at 70km milage and 105km milage ?? Please give me reply sir
how can we calculate of range (km) ?
if v=72v
motor watt =1000 watt
current =15 amp
ah=80
range (km)=?
Lets make a review of the working sir! If the motor is rated 1500 watt and the batteries efficiency is only 80% why then are we getting an increased value of 1875 watt instead of reduced figure 1500 watt minus 80%??
What if we use lead acid battery ?
I want to make 750watts motar bike with 48 v 40ampslead acid battery .
Hi could not understand the logic behind 35km range with 48V 40Ah battery with the speed of 35 km/hr..!
Any formula..?
Please confirm
How did you deduce that 40 AH will provide 35 kmph?
I have EV company said milage is 100 km tr per charge battry is lfp 30ah but now only 40 I thnk plz help me what I do for more milage
Sir 72V 2500 watts motor and 72V 40ampere battery of an electric scooter with a speed of 60kmph what is the Range
Bro, can you tell, how much external battery capacity will be required to charge a Electric bike with Power of 5.5W and Battery capacity 3.9KWh.. I am just trying to understand due to current issues of home charging a bike without an avaialble parking space, can we try using a portable battery to charge an EV instead? any advise is appreciated pls.
Great advancement in ur thinking...I appreciate it.
@@AllAboutEvehicles Thanks, there are portable chargers available abroad but very expensive also some available locally but not sure what capacity will be enough. If we apply the same concept of home charging with 6 amp and use an battery which we use in our home inverters we could establish this? In either scenario taking your math example how much capacity external battery will be required pls?
My calculation here is for discharging only. For charging we need different calculation approach w.r.t C rate.
@@AllAboutEvehicles bhai lithium battery or or acid vali battery series connection m ek sath kam kar jayengi kya
Please make a video on How to decide ratings of battery if the weight is 900 kg??...or what is the relationship between load and battery current
Battery is decided by motor ratings u have to know about voltage ratings of motor then it will be easy to decide battery
if I connect. 48v .160AH.. battery to. 48v. BLDC motor.
if it damage, motor or controller
Sir make more video on calculation part of electric vehicles
All that is good. The weight factor should also be calculated in this. Without taking in consideration the weight of the vehicle or bike the calculation is incomplete.
Weight factor has been considered in motor power and torque calculation in separate video.This video is continuation of that.
can i ask you how do you find out the milage? And how do you so sure 35 km is the average speed and 35 km milage?
Top speed is a constraint I fixed.
Average speed is half of top speed..
Simple mathematics
i think there are no top speed mentioned.
See video clearly....the primary assumptions made.
Top speed 70kmphr
If I change some components inside the LIB battery means how can I compare the calc of the normal' stand by time and changed compound battery stand by time
Hi,
How did u take 35km/hr as the average speed?
How did u find that value? Please tell me.
I have fixed top speed of the ebike will be 70kmph.
So, average of 70 is 35kmph
@@AllAboutEvehicles how can we do that? I mean, set the top speed in an electric vehicle?
@@AllAboutEvehicles also I am confused how the top speed effects the mileage.
@@AllAboutEvehicles what if we travel at 45 kmph as an average, keeping 70 kmph as top speed
Simple maths...
Average =(Top speed + Initial speed)/2
How did u get top speed then?
Can I run 60V 32Ah battery with 72V 7KW BLDC Motor?
72V 32Ah battery is better to run 72 V motor
@@AllAboutEvehicles Yeah I understand from your video about Watt and Voltage of motor but as I doubt about the operating voltage of the motor, if it says that operating 72V but if I only have 60V Battery, can it work together?
And thank you for your answer
@@nitiwatwongchanla9234 you need DC-to-DC converter to use 60V battery with 72V rated Motor
Sir i need a replay
About how to calculate the voltage of a motor
In another video, we try to add it.
Hi bro I want battery charge and discharge rate in a electrical vehicle please help me bro
calculations
Hello sir
How to calculate range of e bike with 48v/800w motor and 35kmph speed
With 48v/30 ah lithium battery
Follow the steps provided in the video. By substituting your technical values u will get the required mileage.
Very nice how to make a BMS for ebicycle battery
Slight contradiction I guess at 6:21 secs, on what basis it is concluded that for 35km/hr battery AH will be 40, hve you crosschecked with physical multimeters in Vehicle for the current (ampere )value
Eg - you could have taken avg speed as 40km/hr then same 48V 40AH would hve provided 40 km range is it right ???
Correct me if I am wrong.
I think the same how he take average speed of 35kmh without know the workload of the motor
HI I NEED YOUR HELP ON A ELECTRIC BIKE PROJECT CAN YOU HELP
WhatsApp me
I want to build electric bike with using unlong LTO (lithium titanate oxcide) cell
Its voltage is only 2.3 volt but its lifecycle ia very long
How much cell needed to build 48 v battry pack!!
48 V/ 2.8 V = 17cells in series. And for the parallel part depends on how much current you need.
Sir how you select average speed 35kmp/h. How we know this you didn't explain about this.
Top speed 70kmph
Average is 35kmph
If the bike runs at 70km/h,how much AH required for 35 km range
70kmph is top speed...you will not always ride at top speed...
20 kmph..40...50...60...70 ..like that at different road conditions
Kindly tell your correct requirement
Bro how did you find max speed?
Maximum speed...we can fix as constraint (our wish) ...so that we can calculate motor power and battery AH
What is 18650 or 32700 capacity in cells
18650 cells come Upto 2.9AH capacity.
32700 cells come in the range of 6AH
How to calculate pickup speed for EV Bike?
👏👏👏👌👌👌🙏🙏🙏🙏
How we will deside 35 km/hr mileage range
Top speed 70kmphr. Average speed is half of top speed (35kmph). Approximately we can take average 35km as mileage for 1 hour driving.
60v 35 ah - 500 w = how many km? thanks
Around 70km range
@@AllAboutEvehicles 70 km? 70 km i make now with 5400w :)
In ur previous message u said...500 watts
@@AllAboutEvehicles yes, couse i wanna take the battery from my electric scooter Dualtron ultra witch is 60v 35 ah , and the motors are 5400w , and put & convert a normal bike in one electric , and need buy a 500w motor. and controler, because i have already the battery.. but my range is bigger with 5400watts , then 500w ...
What i miss ?
bro howdu get the average speed
Top speed and minimum speed
Average
48v 1000watts bldc motor
35km milage - 48v 27 ah
70km milage - 48v 54 ah
105 km milage - 48v 81 ah
Is my calculation is correct sir ???
Approximately
If the battery capacity is 100AH, 48V
And motor capacity is 1.5Kw
Gross vehicle weight 700kgs
Top speed 30km, Avg speed 25km
Then its mileage is?
That's what video explanation is given....
How can you know that avg speed is 35kmph..?
We know the top speed of ebike...(in this case 70 kmph). The low speed is 0 kmph
So average will be 35kmph
If top speed is 80kmph, then average speed is 40 kmph
350 watt motor ==> 35km speed ==> 48V 40AH LI battery, then how many km range it will give ?
Do the calculation same as given in video. Substitute your requirements. You will get mileage.
@@AllAboutEvehicles Okay. Thank you 👍
Hi, Your effort to explain the math is good but it is very general / average calculation which can lead to incorrect selection of battery capacity. And if it is Li-ion then you can imagine the cost. You have not considered torque of vehicle which is directly related to current. At different speeds there will be different torque requirement. At different torque there will be different current consumption by the motor. Also, many of the times during the journey the throttling of the vehicle may vary many times or zero at times even when the vehicle is in movement. Calculation of that duration is not considered. different vehicles will have different weight and loading patterns which you have not considered. The actual way is to have analytical data of city and highway ride of the specific vehicle where current consumption is noted as a pattern and then the battery is designed as per the pattern for a given weight, motor wattage and loading. Do you have such calculation ????????
This is basic calculation. We should not stop with it. We can create simulink models with different driving cycles which will result in maximum torque requirements, battery capacity, motor power requirements.
Everything is fine but how did u take 35 kmph as average speed.......and the ampere magnitude you found at first ....won't it be specified in the motor? These are the doubts anyone who knows pls reply
Here top speed = 70 kmphr is a constraint for design.
Average speed is half between zero and top..simple Mathematics.
Why you find step one
Can you please upload about moter and moter controller Amp selection
Without knowing the output watts of moter controllers
Because in market moter controller came with Amp and voltage
Ola s1 has 8.5kwatt motor and battery 2.9kwh. then 2900/8500=0.35 hour backup 🙄
8.5 is peak or nominal?
@@AllAboutEvehicles 5500 watt
Calculate mileage or range as per my calculation given in video.
@@AllAboutEvehicles ok, thank you 👍
I need your help pls contact me once bro
सभी को अंग्रेजी नहीं आती बे
Plz write ur coments respectfuuy.
CHECK YOUR MOBILE NUMBER
ugly intro music
How you calculate motor power its rated or peak