E-bike watts - How electric bicycle companies are lying to you

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My book "DIY Lithium Batteries" on sale at amzn.to/2jbxvzS
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1 июн 2024

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Комментарии : 595

@vasu9760 3 года назад

And i was waiting for someone to come and sit on left side of that couch lol

@marshall32781 3 года назад

Lol

@hj2479 3 года назад

@G MONEY They are bots, I don't know why you are yelling at bots but ok.

@splicecentral9079 2 года назад

Rule of thirds, baby.

@swae7680 2 года назад

@G MONEY BEEEAAAANNNNSSSS

@swae7680 2 года назад

@G MONEY BEEEAAANNNNNSSSSSS

@Tetratronic 3 года назад

It's a blessing this channel exists to give answers about these things. This guy just get straight to the point and explains everything in detail.

@andrewwalters1735 2 года назад

Excellent tutorial. I had to read and study lots of detailed books about this subject to understand the differences and how they related to each other. In less than 11 minutes, you've perfectly, clearly and concisely described and explained what I had to learn the long and hard way. I wish this video had been around when I was learning this stuff.... well done!

@brendon_a17 3 года назад

The Ebike community seems to love the “I could climb a hill” selling point, but I’m over here in Florida getting reminded every couple videos that hills exist. Cheers.

@rlwings 3 года назад

Great video... Yes, torque ratio to watts is the most important measure. It's how the bike will perform off the line and up hills. Basically how the bike will 'feel' to the rider. - Sluggish vs muscle.

@velotill Год назад

last but not least wheel diameter (in case of hub motors which put less strain/wear on the mechanical drive train) plays into how efficiently those Newton meters actually propell the vehicle forward. The smaller the wheel the sooner rotation and efficient rpm can be achieved. I have a rickshaw which often amounts to a total system weight of 600+kg, but with a geared hub motor in my 16 inch front wheel I'm getting the most when starting the race at the green light at Octoberfest outrunning my colleagues with 200kg less who are running the same 250W nominal system on slimmer tires but with 26 inch diameter. (it might also have to do with me being the GOAT in rickshaw racing but don't tell them that ; )

@clivewilliams3661 Год назад

In UK (and EU) the max continuous power output is 250W for an electrically assisted bicycle but if you want a higher output bike then that is classed as an electrical moped i.e. a motorbike driven by a motor and pedals. The issue with this comes from the requirement that to be an electrical moped it needs to be type approved or to have an 'Individual Vehicle Approval' to show that it complies with UK/EU vehicle build laws and that it will also need to be licenced, taxed and insured for a minimum third party cover. The rider must also wear an approved i.e. motorcycle crash helmet and preferably protective clothing and although not mandatory, the police might pull you over for inappropriate wear if you had classic Lycra shorts and top on.

@fishface20077002 3 года назад

I have waded through all of the amateur videos, the informed videos and the well informed videos and I have gleaned a little knowledge from them all. Some, more than others ( like testing + and - wires at both ends before frying a new £200 battery) . But now I feel I have arrived at Ebike University. Greatest Ebike channel of them all IMO. Thank you from Ireland and keep up educating the masses.

@erikziak1249 3 года назад

1:27 Yep, a big 10 ton trolleybus has an electric motor rated at 100kW. That low! But that is the continuous power. And trust me, during acceleration from standstill, the motor drives much more current than 175A (runs at 600V). That is the reason why there are components limiting maximum current, as the motor would happily take all it can get. And yet, differentials and axle reductions wear out sooner on trolleybuses than on buses. And if the regulator malfunctions, a trolleybus can easily do a burn-out on a dry paved street. Of course, do it three dimes and you can replace the whole axle, if the CV joints on the shaft between the motor and differential do not break sooner. Or you blow the circuit breaker in the trolleybus (should break around 380A, but that is only theoretical) or you trip the breaker in the electrical substation feeding the section where you draw your power from. If you had no protection circuits and a very powerful source, applying 600V directly into the motor would most likely result in lightnings flying out of it and ripping it from the frame of the trolleybus, destroying everything between it and the wheels of the driven axle(s).

@davidburke7240 3 года назад

Micah-this was helpful regarding power, with good examples. I would be interested in hearing a similar approach to torque ratings. Thanks!

@carlstearns1300 3 года назад

Looking forward to your DIY motorcycle conversion book and video series!

@robinyadav2009 3 года назад

hey Micah, Great videos, i used your lesson to make my first and 2nd ebike. thankyou and keep up the good work

@clinthill6982 3 года назад

Thanks for your clear explanation of ebike power. I’ve been researching the subject for a couple of weeks, and yours is the best, most straight forward explanation yet. Again, thanks. Please keep up the good work.

@zachhoy 3 года назад

your channel has been immeasurably useful in getting into ebikes!

@ggebhard1 Год назад

This is my first time to one of your videos. I’m subscribed!! I understood everything while you talked, but need to listen a couple more times to really understand. I’m shopping for my first ebike. It isn’t easy. But, you have helped a lot!! Thank you! I’m going back to listen to your other videos! I needed a white board with your numbers on it. Visual learner, here. Good job!

@Robbo1966 Год назад

A really useful tutorial/vlog. I had wondered why there is so many different claimed power outputs

@garyfyvie9490 Год назад

Thanks for explaining some of these terms as they apply to the ebike market place. I just recieved my T-1 replacement and didn't understand why the new motor was labeled 250w. Now I do.

@littlebear5219 3 года назад

Thank you for your clear explanation of the power levels that’s really been a great help. Thank you so much

@malikdavis3817 2 года назад

🌝🌚

@davia.holanda9405 2 года назад

The first time I watched it I didn't understand, I had many doubts about... . now it became clear as water. thanks a million

@mythrusthelema 3 года назад

One of your best videos! Very well explained, I wish I knew this before I bought my first ebike a few years ago.

@roost3r 3 года назад

Really outstanding and thorough review of motors. Thanks Micah!

@geraldkoth654 3 года назад

Very good explanation of "power". Keeping it simple using VA can help those not familiar with end to end input to output and the various losses along the way. Something to consider is the fully charged battery versus the nearly discharged battery. Power is greatest when the battery is fully charged and is minimal with a mostly discharged battery.

@alecinque9310 Год назад

Finally a honest and clear picture for a newbie!

@marlonalvarez8290 Год назад

I have been watching your videos for a long time and thanks for your information I learned a lot throughout time!!! I became scooter technician and a lot of information came of watching your videos!!! Thank you my brother as always! Great content!!!

@ignassungaila5781 Год назад

During my studies for electrical engineering the lecturers told me that the advertised motor power is usually mechanical. the mechanical power is calculated by multiplying angular velocity and torque. Mechanical power is the power you get from motor. The power you were talking about was electrical or the input power.

@pappy9473 Год назад

Very enjoyable and clear explanations of a topic that is usually portrayed as confusing and impenetrable.

@jaybod6253 3 года назад

Great video. Love to see you do a how-to upgrade your e-scooter video. Thanks

@kjevers1 3 года назад

This would be a great tutorial lesson put into a full series. Explains things in an everyday way of understanding.

@benjebikescalia3674 3 года назад

Vary informative video I am an ebike and battery geek and I love learning new things about anything to with eather of them. Thank you

@emerysmith1711 3 года назад

Thanks Peter for clarifying electrical power ratings and some extra tips (torque).

@DanielLopes-jt8yl 3 года назад

You talked about this several years ago (I think too, it’s also in your book) good to hear again. I think you put it better here. It’s not as text book more layman’s terms I guess. Same but more relaxed and I think easier to understand. Good to hear again very important. And yes we do benefit if we know how to take advantage. That we can (w/aftermarket controllers) put together a bike that we love to take for a ride!

@daveroche6522 2 года назад

First class and full marks - easily one of the best explanatories I've ever seen. Thank you very much and happy travels (remember: "No helmet? NO WAY!").

@aurijustriksys2695 3 года назад

Wish this video was there 3 months ago when I was struggling to understand these things, thank you! :)

@normawingo5116 3 года назад

You make such truly helpful videos! Thank you.

@goinawol9447 Год назад

I know most are watching this for the knowledge of the ratings, but this has actually taught me a lot about battery building. A concept I never understood was the max wattage rating, and now I understand, its just the max current the battery will put out multiplied by voltage.

@leslienicholas8431 Год назад

Brilliant video so enlightening,keep your excellent videos coming thanks.

@acehighdan 3 года назад

this channel is quickly becoming one of my favorite youtube channels, this video is extremely informative, i dont yet have an ebike but my father and i are both interested in getting an ebike so we have been trying to soak up as much info as we can before purchasing our first ebikes, thanks for the all the informative videos you put out there :)

@marcus.H 3 года назад

Build one. It's cheaper and you get to know how they work

@acehighdan 3 года назад

@@marcus.H that would be nice, however that's not currently financially viable for us

@marcus.H 3 года назад

@@acehighdan sorry to hear that. Hopefully parts will become cheaper in coming months. One price of advice I would give for those just starting out is that if you pick up a Liitokala hoverboard battery from AliExpress for $25 you have got a sufficient battery to get you started with a 36v kit. If you could do a shift extra each week at work, you may be able to save up the $150 needed for the motor and controller in a short time Or wash cars or Windows for money. Or now lawns

@peterbahor3066 3 года назад

Thank you - very helpful. I look forward to continue to learn from your your youtube posts.

@bradleymyers5437 Год назад

Well, for those like me, haha, I was unable after welding batteries purchasing BMS's to be able to understand exactly how that final S series was counted. It finally hit me after going back to basics, watching these very easy to follow builds. That, the final S count that I was always missing was: the very first battery that has both the positive and negative going to it, even though it wasn't exactly making an S series connection, was the very last counted Series battery. Maybe very easy for everyone else, but had been banging my head around that for months. So, Thank you so very much for helping me stop feeling so stupid and knowing for sure I knew how to correctly look for and buy the correct BMS for the battery builds I was doing.

@sspence65 Год назад

That's not correct. In a series connected set, positive is on one end, negative is on the other. the path of electricity has to travel through each battery one after another.

@jordylucas2406 11 месяцев назад

Can a maximum current ina. Battery be 32a&72v? Is that correct???

@ARTSPECK 3 года назад

Very interesting information as always. I’m so glad you mentioned Newton meters as that’s how I judge the power of a motor. Seems like your bicycle clock like mine needs new batteries.

@earlbrown525 3 года назад

Great video. I always look forward to your explanations.

@DyLemmaOG 2 года назад

I love you dude you've taught me so much and getting all this info makes me knowledgeable enough to build an ebike

@johnw65 Год назад

WOW, Thanks a lot! As a retired electrician, Your explanation clicked 100%. Something else I see is batteries being rated in watts with no reference to amp hours. Often digging for other sources, I find the '360 watt' battery is 48V and doing the math get 7.5AH which is kinda small... Just liked/subscribed and bookmarking this video!

@Sarge92 Год назад

im unsure tbh 360 watt would refer to the motor power the battery should be rated in AH however what I think might be going on here is for reasons I don't know they could be rating the battery in watts referring to the motor its suitable for for example calling a 32 volt battery a 250-320w battery because that's what you mostly use for those and calling a 42v battery a 500-700 watt battery with a 72v battery being a 1000+ watt battery for reference my bike is specced as follows 350w motor 32v battery 11.5ah battery if we wanna rate my battery in W/h as opposed to A/h my battery is 368W/h in capacity but generally when it comes to ebikes if its talking amps there referring to the AH of the battery if there talking watts its almost always the rating for the motor and volts being what the battery is delivering there's a whole thing for over voting the motors to get a lil extra performance as well as going for higher voltage batterys to reduce charge times as all chargers are limited by there amp ratings so upping the voltage is a easy way to get more watt hours into the battery faster without pushing more amps I've even seen some ellect to install 72v batteries and regulate them down to 32 to benefit from having a smaller battery and faster charge times but still having the range a larger lower volt battery gives them

@johnw65 Год назад

@@Sarge92 That's a lot to wrap one's head around... I note that 'A' also refers to controller ratings. We could really confuse things saying my T42 is only 1.1 KVA peak... If a controller is rated up to 72V and being used on a 48V hub, what's the risk of going in series with a 12V agm with the 48V li-ion to get 60V operating voltage?

@StefanMikulski Год назад

The battery rating in Wh is more honest than giving A*h, as the Wh charge actually defines the amount of energy stored in the battery. A good comparison factor is the battery consumption in Wh/km or Wh/mi. Giving only Ah rating (without the voltage) is deceitful. Giving Wh is honest. Big brands always give the battery rating in Wh as not to deceive the customer.

@johnw65 Год назад

@@StefanMikulski You say "Giving only Ah rating (without the voltage) is deceitful".... I submit, So is Wh - (without the voltage). 360WH could be 36V 10AH or 48V 7.5AH... Speed comes from voltage. VA's or Watts is actually 'power' giving an idea of how long a load will run. Or, in the case of a motor, it's hp rating since 742W=1hp.

@StefanMikulski Год назад

@@johnw65 speed comes from voltage? How comes my 36V Specialized Turbo Vado 6.0 can get at 45 km/h (28 mph) while a derestricted 48 V Specialized Turbo Vado SL can only get at 34 km/h (21 mph)? No, the voltage is irrelevant here. Speed comes from the motor power, which is mechanical 520 W peak in the former and mechanical 240 W in the latter. The speed also affects the battery energy draw. That's why the former battery is 604 Wh (36 V 16.7 Ah) and the latter is 320 Wh (48V 6.6 Ah).

@bantoeri 3 года назад

Great explanation of E Bike power. I made some useful notes esp power calc. Thanks

@josetomasjustiniano1044 3 года назад

Thanks to all the information you bring to use, I'm building my first ebike

@rassspaza1421 3 года назад

You are best profesor i ever had. It is easy to explain something when you know it. I enjoy just to listen you. Thank you very much and keep going

@wiw7 Год назад

Thanks so much for the information. This has been extremely helpful in purchasing 3 e-bikes for my family and I.

@themcserdwar 3 года назад

Great explanation of what can be a tricky subject.

@reeread 3 года назад

With motors I just look at the newton meters of torque and the Rpm’s after checking the volts and amps. Thanks for the video

@brackcycle9056 2 года назад

Yes & Motors have torque & power curve. A hub motor may find life hard turning slowly on a steep hill & heat up fast, but a mid drive is geared crank speed, so should be in the middle of its design range hill or flat. & its also important to remember the gearing factor difference between Torque for a hub motor & a geared mid drive.

@FlyingFun. 3 года назад

Good info, been messing with ebike for a while and came to these ame conclusions. However I have also read that torque numbers can be fudged and interpreted differently so also not a reliable number to focus on. Best bet is to look at all the numbers together and also look through forums etc to see what people are saying about a particular motor you are interested in. Mid drive is tempting me but for reliability I just convertedmy mountain bike with full suspension to 1kw hub drive and it's a nice powerful fast ride.

@LordManhattan 3 года назад

Sooo.. My Super73 SG1 (EU version of the S1), has a nominal rating of 250W, which is the maximum allowed wattage in Europe. The motor also says 250W etc. However, having a 48V battery, and the controller's current is rated at 10A with a maximum current of 20A, it's very obvious that this is a 500W motor with a peak at almost 1000W, which is the same as the original American S1. The European version is electronically limited though, but I've unlocked it by plugging the US throttle in, and I'll just say that if this is "250W", then it's the most powerful 250W motor in existence 🤣 Ain't complaining though!

@ericb.4358 Год назад

Thank you! I'm getting a DUAL motor, DUAL battery E-Cell Monarch 1500 and now I know how to find the real power of each motor.

@LChow-xq3xm 3 года назад

Thank you for taking the time to make that informative video 👍

@PS-ho6kq 11 месяцев назад

Just great! Very informative. You really have a great talent and know haw to share knowledge in a clear, understoodable manner! Greets form Poland!

@williamneufeld480 3 года назад

Thank u for clearing up the confusion that proceeds us I would like to get the ebike book

@rickwallace3102 3 года назад

This is my random comment, The Ultimate Do It Yourself Ebike Guide. Thank you for this video, it explained a few things I was trying to figure out. 500W 32kmh/20mph limit where I live.

@marinekappa82 3 года назад

Thank you for this valuable information. You explain the technical aspects in great laymen's terms.

@paulgroth3345 Год назад

Thank you so very much I have known watch amps and volts since high school but the Newton meters now I have something I can really use thank you so much.

@littlebear5219 3 года назад

Hi I have just placed an order with amazon for your book on lithium battery building , I have had really good / the best information on e bikes from your RU-vid post thank once again

@kingsfamily8142 3 года назад

Nice video! This helps me to understand the about the watts and controllers. Thanks

@MTO_Brothers 2 года назад

Thank you this clear explanation! Usually, when people ask for the power of a bike (or car), they want the max (peak) power, like with petrol engines.

@miroslavganev1072 3 года назад

Very useful information,thanks for clearing that out Mikah

@gianpaologaletta4788 3 года назад

thanks for the information. really clear, please can you continue the electric motorcycle proyect ? the part 5.

@subhayandasgupta1857 3 года назад

This video did clear a lot of questions that I had, Thank you.

@ronaldjohnson8180 3 года назад

Ordered a couple books, hope to be seeing more of you

@davidcantu5923 Год назад

You should run a non profit association that lays out a spread sheet of the bikes and all their true non biased ratings. …you know the truth about these bikes. Well done video!

@martymcmannis8662 3 года назад

Thanks Reminds me of some lakes will have a limit of 10horse motors. But some people will put a 10h cover on a 15h motor.

@simonschulz4401 3 года назад

Very nice video and didn't know, how much i wished for this video until i saw it!

@whatsnext8696 Год назад

Definitely would love a chance to get one of your books.

@davidhodgson977 3 года назад

My head hurts The ultimate ebike guide please,if I do not win a book this time I will buy it. Great video

@gochoa76911 3 года назад

Thanks, Micah! Another great video! A question I have is, What choices are there to charge a ebike battery 24, 36, 48, 72 volts?

@JoseMunoz-gh4mp 3 года назад

Awesome! I've been so confused on those ratings, thanks for the help!

@dandydon6049 3 года назад

Jose Munoz I’m still confused. Maybe if he got off that couch.

@nickqa Год назад

THIS WAS ALL THE INFO I WAS LOOKING FOR! thank you so much for this video!! you are amazing

@diamonddbw 3 года назад

More great info in my quest to understand & build batteries. Thanks

@alanschroeder6913 3 года назад

Hey nice job that clears up my confusion. Appreciate it.

@mattbetta6576 3 года назад

I love your videos! I have learned so much!

@arelkay730 3 года назад

Always good infoand always anxious for more, thank you.

@Mr1drumlover 3 года назад

Clear and concise explanation. I have learned a lot about ebikes from your videos. Thank You!☮

@davidspradley9182 5 месяцев назад

Very well explained, thank you Sir. Question/s how/where do find the controller max output? where do you find the motor's true continuous output? Could you find out from the components cereal number?

@jamespoyntz7876 2 года назад

Excellent tutorial. Thank you I have learned alot from it.

@sachina2294 3 года назад

from many months i wanted some one to explain about this topic thank you for the content.

@chkhamis101 3 года назад

This is the best described video of ebike motors anywhere. Thank you.

@Nicklenite 3 года назад

I want one! Thank you for clearing that up.

@EUCXR 3 года назад

Awesome video, I watch all your content !!

@Smackinyour Год назад

Great video! Really brings some clarity to this consfusing subject. One question, since the battery voltage fluctuates, (for example my 60V battery is around 69,7V when fully charged), shouldn't the peak power be calculated using the maximum voltage times the maximum amp draw? Thank you!

@jordylucas2406 11 месяцев назад

I guess he doesn't answer questions:/

@johndoyle4723 3 года назад

Thanks, here in the UK, as you say we have 250w continuous, I am very happy for the manufacturers to allow us to overamp their motors for more power, they know we will not burn them out at say 750 watts for a reasonable time. I may be wrong, but I think the Bafang 250, and 350 are the same motor but different controllers to allow more power. It is a way of giving us a good product and stay within regs, a point you made well.

@velotill Год назад

only danger with overamping would be being involved in an accident having your bike looked at by a sworn expert making you liable for operating an illegal motor vehicle. The bike squads in Germany are no fools and are regularly making examples of obviously overpowered "250W"ebikes (which could be legal if they had a moped plate and all the other items required for fast ebikes)

@Mopantsu 9 месяцев назад

@@velotillthis is why the laws are a bit dumb. What should really happen is there should be a law on use of peak power to allow fast starts and uphill runs tied to the amount of torque provided by the rider. Fast starts for 10 seconds up to 10 kmph on flats (until you pedal past it) and during cornering to get you out of trouble and when hitting an incline allowing the peak power to stay on for as long as you provide enough torque to keep up to the maximum speed llmit of 25 kmph.

@Topsiekku 3 года назад

In finland can be 1000w but 25/kmh. But you have to pay insurance if the bike's power exceeds 250w or if it goes pedalless.

@saguilar6599 Год назад

thanks, awesome video, very thoughtful and very nice of you how you explained how companies don’t actually lie but in fact what they do is to comply to the estates regulations and just create misconceptions of legit information of the tag/specs readings. Just can’t appreciate enough bro. have an awesome life. 👌👍👍

@michaelmccarroll4202 2 года назад

simple and effective as usual! Thanks for the video

@badgeofhonour 3 года назад

Thanks for the Info's, how about next topic different types LCD and how to use it?

@gcsawicki 3 года назад

A great overview of e-bike power ratings, thanks! 🙏🏻

@theworshiptraveler6709 Год назад

Awesome basic information that will go along way for the Ebike noobies like myself. Thanks

@Alan_Watkin 3 года назад

been watching your vids for abit now always interesting and use full, i live in the Ucontroller so 1,560w i make that then,,, nice ,,,,

@apergiel 3 года назад

Nice informative presentation. A couple comments. 1) Does anyone know if the motor manufactures are specifying a maximum continuous stall torque, something else? 2) In shopping for a ebike, I calculated the miles and elevation I would typically be doing here in Portland Oregon. It came out to 70 miles a week and 4,000' vertical feet. The dealers that addressed that issue were unanimous is saying"you need the biggest motor and battery you can afford", and then advised it will probably come up short on my hilliest days.

@scottidoesntknow1953 3 года назад

Thank you for this information. Always helpful. First time i took notes on a youtube video lol.

@robinj357 3 года назад

I always wondered how much power I was putting out to my motor ,now I know multiplying the voltage by the controller amp / thanks

@4538s Год назад

Good day to you as far i can understand on your explanation tha combination i have to run a motor hub is way not to good, i purchase a 48v 350 motor hub and using a 48v 500w controller and power it with 48v 13s 4p 16850 battery, please recommend the good combination with this voltage. Thank you