Choosing the Right Electric Bike Motor Size

If you're a rider, 250 pounds or over, I really wouldn't consider a 250-watt for you. I'm 215. Now, I can do a 250-watt on flat ground and it propels me just fine. But if I were to encounter some larger hills at 215, I would really want at least a 500-watt motor to help get me up there. The bigger motor's going to give you the possibility of larger hills, and different terrain that you wouldn't have to worry about it. Whereas on a 250 wat, again, you're really going to want to stay on flat ground for the most part. If you're a lighter rider, I would say 160 and below, then 250 watts really will be great for you in most scenarios. Even bigger hills, the 250-watt should be able to handle your weight up most hills, and flat ground would be fine. A 250-watt motor at top speed at full throttle, you're going to be looking at about 18 to 20 miles an hour. Pedal assist, you're going to be probably 22, 20. You're probably going to cruise at about 15.

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The speed is actually pretty good. Now, that top speed is going to diminish the heavier you get, so obviously again, if you're 250 on a 250-watt it may not be able to get you as fast as someone who's 160. You're really going to want to be 250 pounds and below for a 250-watt motor, mostly flat ground riding. Ideally, you're not towing anything. You're not carrying a lot of capacity with you, just a great recreational leisure e-bike to get around, drive by the beach, and have fun. The other thing to consider with all of these motors, generally speaking, the larger the motor, the more expensive. If you are 250 pounds and over, but it's only affordable for you to get a 250-watt motor, then you just maybe want to consider your terrain. If you can stick to flat ground, it should be fine for you. If that saves you 2, 3, 4, $500, that can be an option, but it's going to be better to spend a little more money to get the motor that's going to take you the places that you plan to go, versus spending a bunch of money and it can't even take you on the rides that you're looking to do.

All right, moving up to 500 watts. Now, this is going to be great, obviously, for anyone under 250. I would say it's also going to be fine for anyone up to 300 pounds. This is going to get you up hills. It's going to get you around town. It's going to take you top speeds of 20 miles an hour at the throttle, and about 25 to 28 with pedal assist, depending on how fast you're pedaling. Now, the 500-watt is great because it's going to be less expensive than a 750-watt, typically speaking, but it's going to give you enough power for most of the things that you want to do. If you are a lighter rider and you just want to go faster, then you can opt for a 500-watt. It's going to have more spunk to it. It's going to get you going faster. It's going to take you up hills even easier. On a 250-watt, you might not be able to use just the throttle up a hill. With a 500-watt, you could probably just do throttle to get up hills. You don't even have to use the pedal assist if you so choose.

&#;I urge you to review your product line immediately and ensure that all micromobility devices that you manufacture, import, distribute, or sell in the United States comply with the relevant [safety] standards,&#; wrote Robert S. Kaye, director of the CPSC&#;s Office of Compliance and Field Operations. &#;Failure to do so puts U.S. consumers at risk of serious harm and may result in enforcement action.&#;

When the batteries that power these products are poorly made or are charged too long, they can explode and catch fire. In New York City alone, electric bikes have been the source of over 200 fires as of December . But the e-bike market is growing across the country, and with it, the risk of malfunctioning batteries. The total number of electric bikes imported into the U.S. doubled from to .

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The CPSC states that there were at least 19 fatalities in the past two years connected to electric bikes, electric scooters, and hoverboards, and it has been issuing safety warnings about hoverboards for several years. In October, it worked with electric bike manufacturer Ancheer to recall one of the company&#;s models after receiving reports of injuries from the battery sparking or catching fire. But the CPSC&#;s oversight is hamstrung by a provision in federal law that generally requires the agency to defer to voluntary safety standards, and it may establish a mandatory standard only if the current voluntary standard does not adequately reduce the risk or there is not likely to be substantial compliance. 

UL Enterprises, an independent organization that tests and certifies products as safe, issued safety standards for electric bikes in . The CPSC&#;s letter stated that the relevant UL standard here &#;significantly reduces the risk of injuries and deaths from micromobility device fires.&#; But as CR has reported, few manufacturers have elected to participate in the certification process. 

CR asked 24 manufacturers of electric bikes in our ratings and reviews if their products currently conform to the CPSC-recommended, UL standard, and how they were certified. The battery in one electric bike&#;the Trek Powerfly 4&#;has a UL sticker, indicating that it has been certified by UL to that organization&#;s standard. Four manufacturers&#;Citizen, Jetson, Natko, and SWFT&#;said in response to our questions that their electric bikes adhere to UL specifications but did not say they had been tested by the UL. Two of the manufacturers&#;Cannondale and Rad Power&#;said that they conformed to a separate, global, safety standard instead of the UL&#;s. Eighteen manufacturers did not respond. (We will update this article with information about additional electric bikes as we test them or as we receive manufacturer responses.)

The e-bike industry&#;s adoption of the UL standard may now accelerate because the CPSC is sending multiple signals that it is preparing to increase its oversight. Earlier this month, CPSC Commissioner Mary Boyle issued a statement applauding CR&#;s investigation on fires triggered by the lithium-ion batteries in electric bikes, writing that the agency should not wait for the industry to address these risks on its own. &#;[W]e can and should be taking the lead,&#; she wrote. &#;Meaningful action is overdue.&#;

A statement from CPSC Commissioner Richard Trumka indicated how the agency may follow through on that plan. &#;Imported lithium-ion batteries/e-bikes that fail minimum industry standards may be seized at the ports,&#; he wrote. &#;We may levy penalties against those who fail to inform our agency of hazards posed by their products. And we will seek recalls if necessary.&#;

CPSC Chair Alexander Hoehn-Saric said in a separate statement that the agency is working with firefighters in New York City and elsewhere who are investigating recent lithium-ion battery fires to help the CPSC identify defective products. 

&#;We&#;re glad to see the CPSC holding companies accountable for the safety of their products,&#; says Gabe Knight, a policy analyst at CR. &#;Battery fires have already claimed too many lives, and strong safety standards are vital to protect people who use e-bikes, e-scooters, and similar products.&#;

Contact us to discuss your requirements of electric assist bike wholesaler. Our experienced sales team can help you identify the options that best suit your needs.