E Bike Motor Watts
So when you compare electric bikes first be certain whether continuous or peak watts are being reported.
E bike motor watts. Brose quotes a nominal output of 250 watt and 350 watt for speed pedelecs 28 mph but really it kicks out 340 watts. Suntour quote 450 watt for its hesc e45 system but really it kicks out 750 watts. In some cases you will see both as an example the motor on the evelo delta x electric bike is rated for 750 watts of continuous power but has a peak rating of 1 000 watts. 250 watt motors are the most used motor on commercially available electric bikes.
They are popular in europe and asia where in many countries there is a 250 watt power limit on e bikes. So just about all e bike manufacturers stay under 48v 750 watt anything more the government considers a motorcycle and requires license and registration. However the company recommends using a 52 volt battery. So even you have a 750 watt motor because of your weak controller you will get only 576 watt power from your motor.
In general in the united states the maximum road legal e bike is a 750 watt motor and a top speed of 20 miles per hour. You ll find battery capacities range from 250 wh for fazua and ebikemotion 504 wh for shimano to between 300 625 wh for bosch models. To give you an example if an e bike has 750 watt power e bike motor nominal and it uses a 48v controller with peak current of 12 amp then this motor can deliver only 48vx12 576 watt power. Some e bike conversion kits limit you to a specific voltage but this electric bicycle kit is designed for use with 48 and 52 volt batteries.
This is a great cross country touring bike that gives you access to the outdoors with confidence that its twin battery twin motor and twin suspension design will take you beyond your normal range and back again. Bafang quotes 750 watt for it s bbs 02 mid drive but you can plug it into a laptop and go 1 300 watts. Conclusion nominal output is meaningless. In this article.
The number of watts used by an electric motor at any moment equal the voltage supplied by a battery multiplied by the current flowing from the battery to the motor. So an ebike motor connected to a 24v battery being supplied with 10 amps of current would be powered at 24 10 240 watts. In the usa the limitation is 750 watts while in the eu and some asian countries this output has been limited to 250 watts. Traditional or speed e bike.
First of all make sure what the limitation in your country is and make a wise purchase.