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Quadhopper Flex 400 Electric Scooter


Cover more ground. Leave nothing behind. The innovative Flex 400 electric, rechargeable battery scooter has arrived.  

Hop on the Flex 400 electric scooter to get where you want, when you want, all while leaving zero-emissions behind. This lightweight sit/stand electric scooter combines top-quality performance with eco-friendly transportation and is exclusively available through nümi in the U.S.

Whether you want to ride solo or take a passenger* along for double the fun, the Flex 400 electric, rechargeable battery scooter is perfect for cruising around campus. Take it easy and sit down while you ride, or simply fold the seat up and invite a friend to stand with you.

The Flex electric scooter easily charges in your dorm room and is able to travel up to 34 miles on a single charge, reaching swift speeds up to 17 mph. Enjoy tunes on-the-go by syncing up your phone or iPod with the electric scooter's Bluetooth speaker!

Equipped with an LCD display panel and bright LED headlights, this high-tech electric scooter will keep your path illuminated while riding home from a night class or a late study session at the library. 

A driver's license is not required to zoom around on the Flex. This electric scooter may be ridden on roads and sidewalks in accordance with bicycle laws in your area. 

Choose from 10 bright-colored designs to experience electric transportation in style. 

*Seated, maximum 150 lbs; Standing, maximum 330 lbs


66in x 24in x 41in
Brake System (Front/Rear)
Drum Brake
Maximum Speed
17 mph
Range per Charge
34 Miles**
Battery Weight
8.8 lbs
Net Weight (no battery)
66.1 lbs
Motor Power (W)
350 W DC Brushless Motor
Battery Type
48 V/ 12Ah Lithium Battery
Charging Time
4 Hours
110V/220V 50-60 Hz
Tire Size
6 ( 12%)
Maximum Loading
150 lbs (1 person on seat) or 330 lbs (2 people standing)
**Approximate range based on driving and road conditions. 


Q: How fast do nümi electric scooters and ebikes travel?

A: The maximum speed an electric scooter or ebike will travel depends on road conditions and elevation.

Quadhopper Elite 800 Electric Scooter
25 mph
Quadhopper Elite 820 Electric Scooter
25 mph
Quadhopper Elite 840 Electric Scooter
25 mph
Quadhopper Flex 400 Electric Scooter
17 mph
Quadhopper Sport 600 eBike
12.4 mph
Quadhopper Sport 620A and 620B eBike
16 mph
Quadhopper Sport 640 eBike
16 mph

Q: How far will my nümi electric scooter and/or ebike travel on a single charge? 

A: The maximum range an electric scooter or ebike will travel on a single charge depends on road conditions, elevation and speed. Driving on wet roads, at an incline, and/or at full acceleration and speed will cause a reduction in range traveled. A slower acceleration and moderate speed is advised to achieve the maximum possible range.

Quadhopper Elite 800 Electric Scooter
37.2 miles
Quadhopper Elite 820 Electric Scooter
43.4 miles
Quadhopper Elite 840 Electric Scooter
46.6 miles
Quadhopper Flex 400 Electric Scooter

24.8 miles

Quadhopper Sport 600 eBike

31 miles

Quadhopper Sport 620A and 620B eBike
38 miles
Quadhopper Sport 640 eBike
44 miles

Q: Can I drive my electric scooter on the road?

A: All Quadhopper Elite electric scooters require a license plate and can be ridden on roads that permit Low Speed Vehicles (according to your state).

The Quadhopper Flex 400 electric scooter and Quadhopper Sport 600, 620A, 620B, and 640 ebikes can be ridden on the roads or sidewalks in accordance with bicycle laws in your state and local government.

Q: How do I handle potential maintenance?

A: nümi products require very little maintenance. Parts can be purchased from nümi and installed by a local agent or bicycle/vehicle repair shop.

If you need replacement parts, please email We will determine if the part is in or out of warranty. If you choose to buy protection insurance (optional), we will replace the part free of charge regardless of warranty.

Q: After ordering, when and how do I receive possession of my electric scooter and/or ebike?

A: You have several delivery options:

  1. Immediate delivery to your current address.
  2. Immediate delivery to another address other than your billing address (such as in the case of a gift).
  3. Delivery directly to your college or university during move-in week. (Delivery will occur with other student-ordered scooters and ebikes.) You will be notified several weeks in advance regarding the time and location for your pick up. If you miss your pick-up time, an additional $50 charge will be applied for delivery.

    Expected delivery is estimated to be between 5 and 10 days from the date of purchase. 

    Q: What is the return policy?

    A: Your satisfaction is important to us. You have 7 days to return your electric scooter and/or ebike for a full refund. Returned products that are used or have cosmetic damage will not be accepted for a refund.