Help Center


Battery Charging Details

Where to charge

Always charge in a safe area that is dry, indoors, between 50 °F–77 °F (10 °C–25 °C), and away from direct sunlight, dirt, or debris. Arrange the bike, battery, and charger to eliminate the potential for trip hazards, damage to the bike, battery, or charger.

When to charge

A new battery should arrive with between 50% and 75% of a charge. You can ride the bike right away, without charging, once the bike is assembled and verified as safe by a local, certified, and reputable bike mechanic. After the first ride, a new bike or a bike with a new battery should complete the battery charging process outlined in the Battery Balancing section.

We recommend charging the battery fully after each ride so your battery can power you for the full range the next time you ride Rad! The battery has no "memory" so you can charge your battery after each and every use, even if you just take a spin around the block.

A battery with a partial charge can be left without immediately charging back to full. It should be charged as soon as possible when the battery bar on the display is flashing to indicate the battery is low.

How long to charge

Charging the battery from completely empty to completely full typically takes between 3–7 hours. Charging time depends on various factors including distance traveled, riding characteristics, terrain, payload, and battery age. Take a look at the table below for more details.

Battery Balancing Steps

Take your first ride. Ride the bike and use power assistance (the pedal assist system or the throttle) normally.

After your first ride: Charge your battery for as close to 12 hours as possible, but not longer than 12 hours. Charge the battery even if you only used a small amount of battery power while riding. The charger indicator lights may change to green and red to show that the battery is full, but keep the battery plugged in and charging for as close to 12 hours as possible.
Take your second ride. Ride the bike again and use power assistance (the pedal assist system or the throttle) normally.

Store a Battery Long-Term

If storing your bike from Viribus Bikes for longer than two weeks at a time, follow the recommendations below to maintain the health and longevity of your battery.

Charge (or discharge) the battery to approximately 75% charged.
Power off the battery either locked to the frame or unlocked and removed from the frame for storage.
Store the battery in a dry, climate controlled, indoor location between 50° F–77° F (10° C–25° C).
Check the battery monthly, and if necessary, use the charger from Rad Power Bikes to charge the battery to 75% charged.
Complete the battery balancing process in the previous section after a period of long-term storage and before the first ride. This process will help ensure the cells in the battery are balanced and operating as efficiently as possible.

Owner's Manuals and Assembly Videos

Our ebikes are shipped nearly fully assembled, which means there is some assembly required before you can ride Rad. Our owner's manuals and assembly videos will walk you through assembly

Receiving your Ebike Delivery

As a consumer-direct company, our goal is to make the shipping process of your order as smooth as possible. Once your order is placed, you'll receive an order confirmation email. When your order ships, you'll receive a shipping confirmation email with your tracking details.

Signature Requirements

All ebike shipments will require a signature upon delivery. FedEx will accept a signature from anyone within the household who is 18 years of age or older. The signature requirement cannot be waived. FedEx will make three delivery attempts before returning the bike package back to Viribus Bikes. Any orders with a value under $500 should not require a signature.

In order to meet Covid-19 protocols, FedEx drivers can no longer request a physical signature from customers, but they should still be knocking on the door, ringing the doorbell, or using some other method to alert customers that they've arrived. Once they confirm that you are home, the driver will sign for the package on your behalf.

Bike Security: Protecting Against Loss or Theft

Click on a heading below to learn about how to protect your bike so you can keep riding Viribus.

Lock up Your Bike

All of our bikes have the following anti-theft features:
A locking battery pack that can either be locked onto the frame, or unlocked, removed, and brought with you for charging and safe keeping.

We recommend investing in a quality lock to protect your bike when you're not riding. Check out our Accessories page to see which bike locks you can purchase directly from Viribus Bikes.

Viribus Bikes makes no claims or recommendations on the proper lock hardware or procedures to secure your bike, but we do recommend you take the appropriate precautions to keep your bike safe from theft.

Register and Insure Your Ebike

It’s a good idea to keep your order information, such as your order confirmation and serial number, for your personal records.

Consult your local vehicle registration authority to check if ebike registration and insurance is required in your area. To insure your bike, check with your personal insurance agent to see if they have liability and personal property coverage for you and your bike, or check out velosurance to request a quote from a company that specializes in bike insurance.

We also suggest registering your bike with Bike Index and 529 Garage. Both are free services that store your bike's information in a database that is searchable by police departments and bike shops. This can be helpful if your bike is lost or stolen.


Ride Without Motor Power

The great thing about our ebikes is that they can be pedaled just like a traditional bike. By turning off the bike or switching the pedal assist level to 0, a rider can pedal and ride the bike, and can even shift gears when desired.

Pedaling an ebike without motor assistance may require a bit more effort to start than a traditional bike because an ebike weighs slightly more. However, that means your bike is equipped with a robust and powerful motor and a battery pack capable of propelling you forward whenever you choose!

Gear Shifting Information

Many of our models are equipped with a derailleur and use a Shimano 7-speed gearing system and thumb shifter. The shifter on the right side of the handlebar controls the rear derailleur, which moves the chain from cog to cog, changing the way the bike rides.

Shifting down to a lower gear moves the chain to a larger cog. Shifting down before slowing or stopping the bike can help make it easier to start pedaling again. Shifting into the lowest gear (gear 1, or first gear) when riding uphill can help make climbing easier.

Shifting up to a higher gear moves the chain to a smaller cog. Shifting up can help a rider propel the bike farther and faster with each pedal stroke, but will require more effort from the rider. Shifting into a higher gear will help maintain pedal authority at top speeds.


The tires used on each model are designed to be high-performance, visible, durable, and to keep you riding Viribus for miles. The tires are developed and sized to work with a specific Viribus Bikes model or, in some cases, are compatible with multiple models.

Local Regulations

Riders should confirm the following details with local law enforcement to learn about their local rules and regulations for ebikes:

1. Ebike peak power limit
2. Top speed
3. Throttle usage

The pedal assist system is still fully functional when the throttle is disabled.


In the US, ebikes typically fall into one of three classes: Class 1, Class 2, and Class 3.

Class 1 has a top speed of 20 mph without pedaling.
Class 2 has a top speed of 20 mph without pedaling and has a throttle.
Class 3 has a top speed of 28 mph without pedaling.

Viribus Bikes ebikes are Class 2


Does the bike come mostly assembled? I'm a novice and is it easy to assemble?

Your bike will arrive mostly assembled. We will provide the tools and a comprehensive assembly video so you can assemble your Haoqi Bike bike within 20mins even if you are a novice.

Is the Bike with Fenders?

Yes, the bike with fenders, it has to install yourself after receiving the package. E-bike full fenders*2, multi-function repair tool*1, Charge*1, Headlight and Taillights

Do I need a license and Insurance to ride ebike on the road?

No. The e-bike from Viribus is completely under U.S regulations and laws which allow you to ride it without specific license and insurance.

Can I ride into the rain? What is the waterproof rating?

Viribus electric Bike battery is sealed well enough for the bikes to be safely ridden in light rain.
However, it is not recommended to ride them through very heavy downpours, or through flooded streets when the crank and/or the motor can get splashed or even covered with water. It is best to take shelter until the rain eases and the roads are no longer covered with water.

Where can I ride an electric bike?

An electric bike is legally treated the same as a normal bike. You can ride an electric assisted bike anywhere you can ride your regular bike.


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