General Information

How can I test ride a Magnum Bike?

At your nearest dealer here.

At our retail shop – location details here.

Fill out a test ride waiver – here.

What are the classes of e-bikes?

There are three different classes of e-bikes. Classes were created to determine how e-bikes should be used according to local e-bike laws. Currently, 22 states across the U.S. utilize the three-class system for e-bikes.

The classes include:

  • Class 1: The Class 1 e-bike provides assistance only when you pedal, and stops assisting when you reach 20 mph — great for bike lanes, bike paths, roads or anywhere you would take a traditional bike.
  • Class 2: The Class 2 e-bike is equipped with a throttle which provides a boost without pedaling, and stops assisting at 20 mph.
  • Class 3: The Class 3 e-bike is equipped with a speedometer, and only assists until the bike reaches 28 mph on pedal assist alone, and throttle allowed in some states up to 20mph.
What is the difference between purchasing directly from Magnum Bikes online versus a certified dealer?

The main difference is availability.

We highly recommend purchasing through a certified dealer when possible. It builds a good relationship for service and support. You can find a dealer near you here.

For customers who purchase directly from Magnum Bikes online, because they are not near a certified dealer, most of their service and support goes through our customer support team. Shop directly here.

If you are local to Salt Lake City, come visit us at our flagship store. All the details here

What is the top speed of my E-Bike?

The top speed of your e-bike is determined by several of the following factors: weather, rider weight, terrain, incline, using the throttle and pedal assist.
In great conditions, the top speed of using throttle only will be 20MPH.
Depending on the bike model and the use of pedal assist, the top speed will be between 25MPH-28MPH.
These speeds may be lower if any of the above factors are in place.

Your top speed will also be determined by which class it is in. Class is determined by state and city laws.

The classes include:

  • Class 1: The Class 1 e-bike provides assistance only when you pedal, and stops assisting when you reach 20 mph — great for bike lanes, bike paths, roads or anywhere you would take a traditional bike.
  • Class 2: The Class 2 e-bike is equipped with a throttle which provides a boost without pedaling, and stops assisting at 20 mph.
  • Class 3: The Class 3 e-bike is equipped with a speedometer, and only assists until the bike reaches 28 mph on pedal assist alone, and throttle allowed in some states up to 20mph.



How do I extend the range of my Magnum Bike per charge?
  1. Your e-bike will consume much less battery when you begin riding by pedaling and not using the throttle. Stop and go riding with the throttle can limit the range of your e-bike.
  2. Always make sure your tires are inflated properly. Riding on low pressure tires will consume more energy.
  3. Always pedal up hills. Do not use throttle only when riding up hills.
  4. Use your mechanical gears correctly. When you are pedaling make sure to be in the correct gear. Lower your gears while going up hills and raise the gears on flat and downhill terrain.
How do I take care of my Magnum Bikes battery?
  1. Always pedal along with your e-bike, especially up hills so the battery is not depleted too quickly.
  2. Always keep your battery charged. Lithium batteries life cycle can be extended by not depleting your battery fully. Even if you have not depleted your battery entirely during your ride we suggest that you charge it.
  3. Do not overcharge your battery. Be sure not to leave your battery charging for more than 24 hours at a time.
  4. Keep out of extreme hot or cold temperatures.
  5. Store indoors.
  6. Keep out of the rain or snow.
How long does it take re-charge my battery?

On average the recharge time for our batteries is approximately 6.5 hours.

How long will my Magnum Bikes battery last me?
You will typically get 800-1000 charge cycles out of your battery, as long as you are storing it appropriately. It is best to store indoors and out of extreme hot or cold temperatures.
What are the differences between Magnum batteries?

Batteries are classified by voltage and amp hour. The voltage can be thought of as the size of an engine, this determines the power output. A 48V will be more powerful than a 36V.

The amp hour can be thought of as the size of a gas tank. The higher the number, the greater the range. A 17.5ah has a longer mile range than a 13ah battery.

*Safety note: Battery voltage should be compatible with the controller and charger you are using. For example, only use a 48V charger with a 48V battery. Using an incompatible charger or controller could damage your battery, bike, or even cause an electrical fire.

What do the terms amps, watts and volts mean for my E-bike?
  1. Your e-bike has an electric system that is measured by volts and amps. The voltage is the amount of potential electricity your battery holds.
  2. The amps or current refers to the speed or rate of flow of electricity as it is being drawn from the battery. The higher the current the quicker the battery will be depleted. High current happens when riding with a heavy load, riding uphill, riding on bumpy and grass terrain etc.
  3. The watts is a measure of the output of power that your e-bike can provide. Watts are measured by multiplying the voltage by the current.

Example: A 350 watt system can put out up to about 600 watts at peak but will provide 350 watts of power when riding under normal conditions. The rated power of your e-bike will affect the speed and or torque depending on the configuration.

What is the cycle life of my battery?

All Magnum Electric Bikes come with a lithium battery. The Lithium-NCM battery has a life cycle of 700 cycles. Over time your battery capacity will diminish. This means that you can charge and discharge the battery completely 700 times at a discharge rate of 0.5C before the capacity depletes to 80% efficiency.


Changing Display Settings

Look here for information on changing your display settings

Can I see the trip distance in Miles or only in Kilometers?

Yes. Your trip distance will change in accordance with the denomination you set your display to show (Miles or Kilometers).
*Note: the Magnum Cosmopolitan only reads in kilometers and not miles.

How do I change the settings from MPH to KMH or vice versa?

The trip distance indication on the display is always “KM”. This does not mean to say that the distance showing is in kilometers but rather to indicate to you when you’re viewing your trip distance. When your display is set to miles your trip distance reflects the miles traveled.

How do I gain access to my C6, C7, and L7 display settings?
  1. Hold + and – for about 5 seconds
  2. You will see the screen change to 8888
  3. Using + or – to change numbers and set to toggle
  4. Change the code to 8088 “if that doesn’t work use 8306 or 8108”
  5. The first screen is P. Pedal assist top speed
  6. The second screen is throttle top speed.
  7. The third screen is the tire size
  8. The fourth screen is the odometer
  9. The fifth screen is the battery size
  10. The sixth screen is power level
  11. Hold set to exit back to the home screen (or + and – if it is the L7 display)


Troubleshooting Your E-Bike

Look here if you need to troubleshoot your E-Bike

How do I change a flat tire on the rear motor wheel of my E-Bike?
  1. Turn the power of your battery off or remove the battery entirely from your E-bike
  2. Disconnect the motor cable quick connector
  3. Change the flat tire as you would a regular bike
  4. Reconnect the motor plug matching up the arrows on the cable connectors
My E-Bike motor is making loud noises. What should I do?
  1. Check the brakes to be sure they are adjusted properly and not the cause of the noise
  2. Ride the bicycle without power to be sure the noise is not originating from any of the other mechanical parts of your E-bike
  3. If the problem persists please see your licensed Magnum Bikes dealer
What do I do if the power of my E-bike cuts out?
  1. Check the battery voltage on the top of your battery
  2. Check all of your connections, specifically the connector to the LCD display
  3. Remove the battery, then insert it back into place
  4. Check if the system may be overloaded (riding up steep hill without assistance, heavy load)
  5. If the problem persists please see your licensed Magnum Bikes dealer
What do I do if the range of my E-Bike is low?
  1. Check your charger. Please deplete the battery entirely and check the time it takes to complete the charge of your battery from 0-100%. The correct time should be 6.5 hours. If the charge time is less this indicates that the charger is not completing the charge
  2. After charging your battery completely, ride it out. Ride the E-bike once and measure your total trip distance to see if the battery is functioning properly. Magnum Bikes support center will want to know the actual range of your battery
  3. If you are able, measure the battery voltage when fully charged. The voltage of your lithium battery should be 42V. If it is less than this there is a problem with either your battery or charger
  4. If the problem persists please see your licensed Magnum Bikes dealer
What should I do if my E-Bike spokes are loose?

Your E-bike motor is attached to the rear wheel, which applies more stress to the spokes than on a regular bike. Because of this, it is essential to check the strength of the spokes periodically. If any spokes are loose, please do not continue riding your E-bike before tightening the spokes.

Please note: Continuing to ride with loose spokes will eventually cause all of the spokes to loosen and break.



Can I get replacement keys for my battery?

If you lose your keys, we sell the entire lock mechanism with new keys. We do not keep stock of single keys for security reasons.

Can I ride my Magnum E-Bike in the rain?

Your e-bike is water resistant and can be ridden in an average rainfall. We advise against riding in heavy rain and strongly advise against leaving your e-bike outside while it’s raining.

How can I see the display while riding at night?

When riding at night please press the power button on the LCD display once to light the back light on the display.

If I get a punctured tire must I go to an E-Bicycle specialist to have it fixed?

While we generally suggest that all maintenance on your E-bike is done by someone with ample experience, changing a flat is quite simple.

Magnum Bikes all come standard with a quick release plug to allow for easy access to the rear wheel. Anyone with basic bicycle technical experience can easily disconnect the motor cable change the flat and reconnect it.

NOTICE: When disconnecting and reconnecting the motor cable be sure that the power is turned off and the arrows on the cable on the motor are matched up.

What bike trailer do you recommend using with Magnum Bikes?

Burley brand bike trailers work well.

What car rack is recommended to use with Magnum Bikes?

Our bikes are made to fit most standard car racks. E-bikes are heavier than regular pedal bikes, so we recommend a rack that is rated to hold at least 60lbs, more if you have more than one bike. We also recommend taking your battery out while transporting as that will be safer for the battery and will make the bike lighter by 7-10lbs. When looking for specific bike racks for your car, we recommend a tray style.
Kuat brand car racks work well with Magnum Bikes.

What is the correct tire pressure for my Electric Bike?
  1. Keeping your tire pressure correct at all times is important. Correct tire pressure will increase the efficiency of your E-bike and prevent from getting flat tires while riding.
  2. The correct PSI varies according to the tire of your E-bike. The maximum PSI can be found on the side of your tire.
What is the weight limit on a Magnum Bike?

Payload ~ 350lb

Navigator, Ranger, Summit, Navigator, Cruiser, Lowrider, Metro, Metro+, Peak, Pathfinder, Ui6,Ui6+, Mi6, Ui5, Mi5 ~ 265lbs

Premium II, Classic II, Premium, Classic ~ 242lbs

Cosmo ~ 220 lbs



How do I fill out my warranty form?

You can fill out your warranty registration here.

You will need to locate the following serial numbers : Frame, battery, and motor

You will also need the purchasing information: Date of purchase, where you purchased, and invoice number.

*The video on the warranty page will also show you how to find your serial numbers.

What is included in my warranty?

Magnum guarantees the frame, motor, and electrical components are free of manufacturer defect for 1 year from purchase date. Please be sure to register your warranty on our website. Commercial or business use will void a bike’s warranty. The other components on our bikes are subject to the different manufacturers’ warranties. For example: Shimano, Schwalbe, and Tektro are commonly seen components on our bikes and a Magnum dealer can submit a warranty request to them on your behalf.

Where can I find my frame number?

The frame number is typically stamped into the head tube. In the rare event that it is not, there is also a sticker with a barcode on it. Beneath that barcode you will also find your frame number.
You can find a video here that demonstrates how to find it.