Announcement About Amazon's Delivery Issue During COVID-19

By Daniel Yang
on July 05, 2020
11 comments

Announcement About Amazon's Delivery Issue During COVID-19

For the past 4 years, DJ Bikes has been working with Amazon closely. We chose to send all inventories to Amazon's warehouses in both the US and Canada so we can guarantee a fast delivery. Usually, Amazon's delivery is 2 to 5 business days and the delivery process has been consistent until early this year.

I would need to provide you an update about Amazon's new policy. Since the COVID-19 outbreak happened, Amazon has refused to deliver over-sized packages. You might have experienced that your Amazon's order has just been pending there forever and it is not in my control. If that happens, my suggestion is to cancel the order from Amazon and order the same bike model at this website.

DJ Bikes has made a critical but essential decision about the inventory management. In July 2020, DJ Bikes will start managing and delivering all bike orders by using our own capacity. Your order will be managed and delivered to you by DJ Bikes!

Here is the note from Amazon just for your reference.

"Amazon Selling Partner Support

Upon reviewing this case, I understand that your order are unfulfilled through FBA under CA market place. This is the last Covid 19 update we received and this is the only cause why your orders are not being fulfilled.

WHAT?

Amazon is temporarily limiting receiving, restocking, and shipping for products that require two people to pick, pack or ship. This applies to parcels and individual products weighing between 49 lbs - 99 lbs (22.2 Kg - 44.9 Kg).

WHEN?

April 21, 2020 (And Still Going On)

WHAT IS THE IMPACT FOR YOUR CUSTOMERS?

A mass mail will be sent to the sellers informing them about the change. For products and parcels already on their way to our fulfillment centres and that are between 49 lbs - 99 lbs (22.2 Kg - 44.9 Kg), we will make every effort to receive these products while adhering to guidance from health authorities. Any shipment rejected will be sent back, however we expect these cases will be limited. If Sellers have already created a shipment for products weighing between 49 lbs - 99 lbs (22.2 Kg - 44.9 Kg) and it has not already been shipped, Sellers must cancel the shipment."

Electric Bikes Motor Types. Mid Drive VS Rear Hub

By Daniel Yang
on June 27, 2020
2 comments

Introduction

Motors are an important component of Electric Bikes, because they supply energy to the bike, by converting electrical energy into mechanical energy. Earlier electric motors used brushes to vary the path of current flowing into the motor. The recurrent action made electric motors less efficient and more prone to deteriorate over time. For more than 10 years now, electric bikes have been using brushless DC motors, and as the name denotes, they do not have brushes in their operation. For brushless DC motors, electric energy is converted into mechanical energy with the use of permanent magnets and electromagnets.

Inside the brushless DC motor, there is the stator; which is the stationary electrical device and the rotor; which is the rotating electrical device. The stator consists of wires coiled round an assembly of separate electromagnets arrayed in such a system that they form a hollow tube, with the individual electromagnets having one pole facing the direction of the centre of the tube. This is the stationary component of the brushless DC motor. The rotor, on the other hand, consists of an assembly of permanent magnets inside the hollow tube, with the poles facing the direction of the stator poles. The rotor is the rotatory component of the brushless DC motor. All the bikes offered by DJ Bikes have a brushless DC motor.

Operating mechanism

The purpose of this configuration of the motor components to cause rotatory motion of the motor shaft due to the rotatory movement of the rotor. When the motor controller pulls electric current to the stator’s electromagnets from the battery, they repel and attract the rotor’s electromagnets, thereby causing the rotor to rotate. The stator is connected to a shaft.

There are two major types of motors on Electric Bikes: Mid-drive motor and Hub motor. For the mid-drive motor, the shaft rotates to produce torque, and by a small chainring joined to the shaft, power is supplied to the pedals which assists you ride the bike. On the other hand, for Hub motors, the shaft is the axle, and thus does not rotate. The rotatory action is caused by the rotor, which causes the complete motor to rotate to produce torque, by rotating either the front or rear wheel.

Overview: Types of Motors

There are four types of motors that are used on (or have been used) on Electric Bikes. They are listed below:

Mid-drive Motors

Mid-drive motors are located in the middle of the frame of the bike, typically positioned at the bottom bracket. The electric motor produces a torque that rotates the shaft (connected to the stator), which is connected to a small chainring. With this type of motor, no extra source of power is needed, as the motor complements the energy you exert on the pedals within the chain drive of the bike. Typically, embedded within the motor pack is a gear reduction technology. To protect the small chainring from fracture when the bike is not in gear, most mid-drive structures comprise of gear sensors which cut off power to the motor. The DJ Mid Drive Fat Bike uses a powerful Bafang rated watt 48V 750W “Mid-drive motor”

 

DJ Mid Drive Fat Bike with the Direct-drive motor at the centre of the bike frame

Direct-drive Hub Motors

In direct-drive hub motors, the shaft of the motor is the rear axle, in a stationary position, while the motor (i.e. the hub) rotates about the shaft, and thereby creates acceleration. These are the least complicated of all electric bike motors. Typically, direct-drive motors have a larger diameter compared to geared hub motors, which produces increased torque. These motors have the unique ability of moving forward and backward with even efficiency. During the braking process (which includes slowing down or coming to a complete stop), direct-drive electric bikes can also produce electric energy. This process is called regenerative braking. During the braking process, energy flows to the battery from the wheels, instead of being dissipated as heat. This “saved” energy is now used when the bike becomes operational, or increases its speed.

Geared Hub Motors

Gear Hub Motors are similar in operation to direct-drive hub motors, with the exception of an electric motor that rotates within the hub at a considerable higher speed. The hub rotates at the lower speed, due to the shaft of the motor connected to a series of orbital gears, that is connected to the hub. This system creates additional torque but lower speeds. Typically, gear hub motors have a smaller diameter than direct drive motors, because a larger motor is not required to produce the equivalent quantity of torque, however, the orbital gears make the hubs larger. These motors also comprise of a “freewheel”, which removes the possibility of regenerative braking, but will cruise smoothly rather than produce a slight drag when they are not under power, therefore electric bikes with gear hub motors perform in a similar fashion with conventional bicycles. The majority of the bikes offered by DJ Bikes are Geared Hub Motors.

 

DJ Super Bike with a Jiabo 48V 500W Brushless Rear Geared Hub Motor

Friction Motors

Friction-driven motor electric bikes are not as common as the hub and mid-drive systems, they however have the advantage of a cheaper design for users who want to transform a conventional bike with marginal effort. A bolt-on motor drives a small wheel linked to the tire. The location of this kit is usually below the chainstays, above the seat trays or attached to the fork’s brake mount. The wheel of the motor rotates the tire, thus causing forward motion. As the name implies, the action of the motor causes increased wear on the tire, however, these kits can be substituted easily between bikes.

Summary

Comparison between Mid-drive motors and Hub Motors

Mid-drive motors: Advantages

  • They perform more efficiently on hills, because the bike can climb at low speeds
  • Due to their centred position on the bike, they offer a more stable ride
  • They are more suitable for electric mountain bikes
  • It is easier to change tires, as there is no wiring between the hub and the frame

Mid-drive motors: Disadvantages

  • An increased wear of the chain due to the addition of the mid-drive motor to the chain, this leads to frequent replacement of the chains
  • Due to increased mechanical components and a higher gear reduction, it is a more expensive bike

Hub motors: Advantages

  • Due to the fact that hub motors function outside the chain drive of the bike, their chain does not wear out like mid-drive motors
  • They are inexpensive compared to mid-drive motors, because manufacturers are not required to modify the bike’s frame to accommodate a custom motor, and can also be manufactured in large quantities
  • As no mechanical component is used during transmission, they are more reliable and long-lasting
  • They require slight, and in most cases, no maintenance
  • They can still be ridden if the chain is broken, as the hub motor is attached directly to the bike’s wheel and not dependent of the electric bike
  • They are easier to ride

Hub motors: Disadvantages

  • They are heavier compared to mid-drive motors because their motors and batteries are bigger, due to more electric power required
  • It is more difficult to change tires, because you have to remove all the cables associated the hub motor

 

 

 

Comparison between Direct-drive Hub motors and Geared Hub Motors

Direct-drive Hub motors: Advantages

  • As a result of regenerative braking, direct-drive hub motors have the advantage of a reduced brake wear
  • Typically, they are more quiet than geared hub motors
  • Compared to geared hub motors, direct-drive hub motors perform better at high speeds

Direct-drive Hub motors: Disadvantages

  • Compared to geared hub motors, they are larger and weigh more, due to additional magnetic material needed to produce a torque of low speed
  • They produce a drag during pedaling

Geared Hub motors: Advantages

  • They are more suitable for low speeds and elevated torque applications
  • With the same torque rating of a direct-drive hub motor, the weight of a gear hub motor is considerably lighter
  • They can cruise smoothly with very little drag
  • They are smaller and less bulky, making parking at the workplace or at home easier, therefore a preferred choice for commuters

Geared Hub motors: Disadvantages

  • Compared with direct-drive hub motors, geared hub motors experience difficulty in attaining the same speed

Conclusion

What type of motor should you be looking for when buying an Electric Bike? It really depends on your needs.

The bikes manufactured by DJ Bikes has either the Mid-drive or the Hub Motors installed. See below the summary of the motor types in the array of DJ Bikes.

S/No

Name

Type of Motor

1

DJ Mountain Bike

Bafang Brushless Rear Geared Hub Motor

2

DJ City Bike

Bafang Brushless Rear Geared Hub Motor

3

DJ Fat Bike

Bafang Brushless Rear Geared Hub Motor

4

DJ Mid Drive Fat Bike

Bafang Brushless Rear Middle-Drive Motor

5

DJ Folding Bike

Bafang Brushless Rear Geared Hub Motor

6

DJ Folding Bike Step Thru

Bafang Brushless Rear Geared Hub Motor

7

DJ Super Bike

Jiabo Brushless Rear Geared Hub Motor

8

DJ Super Bike Step Thru

Jiabo Brushless Rear Geared Hub Motor

Development and Classes of Electric Bikes

By Daniel Yang
on June 25, 2020
2 comments

Development of Electric Bikes

Over the past few years, Electric Bikes have gained popularity in North America, Europe and Asia, with its usage experiencing tremendous growth since 1998. You might therefore be right in thinking the development of Electric Bikes started in the 21st century. However, research and patents have been documented in the United States since the 19th century.

Ogden Bolton Jr., in 1885, designed a bicycle powered by batteries. This bike had no gears, and with a battery rating of 10V, the motor was able to use pull as much as 100A in electric current.

After two years, Hosea W. Libbey in 1897, developed a bike that was driven by a double electric motor. The motor for this design was inside the hub of the crankset axle.

The development of rear-wheel drive electric bicycles gained popularity just before 1900. In 1898, Mathew J. Steffens designed a driving belt by the outside edge of the wheel, while in 1899, John Schnepf illustrated a back-wheel friction drive electric bicycle with a roller wheel. In 1969, this illustration was reviewed and further developed by G.A Wood Jr, where four fractional motors coupled with a series of gears were included in his design.

In 1992, a bicycle named “Zike”, which comprised of Nickel-Cadmium battery installed into a frame assembly in addition with a permanent magnet motor weighing 850grams. Notwithstanding the “Zike”, which was manufactured by Vector Services Limited, there was still a shortage of electric bikes available for sale.

The late 1990s brought about the development of torque sensors and power controls, with Takada Yutky, filing for a patent in 1997.

In 1989, the Japanese automotive giant, Yamaha, assembled an initial model of an Electric Bike, and further modifications in 1993 with the invention of the pedal assist system.

Classes of Electric Bikes

Today, there are multiple classes of electric bikes. They are generally classified according to the control system and the power that can be delivered from their electric motor. Due to legal problems, there might be different classifications across various countries, cities, towns or provinces, however, electric bikes are generally classified as follows:

  • Pedal Assist System – this is a system where power is supplied by the electric motor to the pedals. Depending on the circumstances, it can be regulated by the bike or user. During pedaling, this system helps to supplement the efforts of the rider

Basic plan of a pedal assist system bicycle, where power is supplied to the pedals by an electric motor

  • Power-on-demand – this is a system where the power supplied to the motor is activated by a throttle. This is installed on all bikes manufactured by DJ Bikes on the handlebar for your convenience, by the use of your right thumb

Basic plan of a power-on-demand bicycle, where power can be supplied to the motor by a throttle on the handlebar

Electric Bikes could have only one characteristic of the above stated classification, or a combination of both. The various sub-categories are listed below:

  • Electric bikes with pedal assist system only – these are either named as “pedelecs”, i.e. bicycles, with a maximum speed and motor power of 25km/hr and 250Watts respectively; or “S-pedelecs”, i.e. mopeds, with a maximum speed and motor power of 45km/hr and 250 Watts respectively
  • Electric bikes with pedal assist system and power-on-demand option – these are the latest models of Electric Bikes. All the bikes manufactured by DJ Bikes have both of these features. There is the pedal assist that regulates the output power of the motor by turning the pedals; and a thumb throttle which allows you to regulate the power of the motor by the action of your thumb

DJ Mountain Bike Handlebar – the King Meter Display shows you the level of the Pedal Assist System, which can be adjusted by the user, while the throttle helps you regulate the motor power. Other accessories like the display button, bell and shift are shown as well

  • Electric bikes with power-on-demand only – these are bikes where the electric motor is manually activated and engaged by the use of a throttle, typically on a handlebar only. For this bike, the user can use the pedal alone (like a regular bicycle) without the use of the power-on-demand option; or use the throttle to manually supply power to the electric motor to ride the bike; or the rider uses both the throttle, but also supplies energy by physically pedaling the bicycle.

 

 

Tips for Battery Maintenance

By Daniel Yang
on June 06, 2020
2 comments

One of the most important components of your Electric Bike is the battery. To prolong the life of your battery, and thus ensuring the Electric Bike performs to its optimum efficiency, diligent and purposeful care/maintenance must be done throughout the life span of the Electric Bike. The major difference between a regular and an electric bike, is provided below:

Regular Bikes – No battery is provided; the user is required to generate power to move the bike, by the use of the pedals.

Electric Bikes – They make use of batteries, and the user can select the amount of power required. Since the user can determine the amount of power, electric bikes can also be used as a regular bike, if no power is selected.

All bikes manufactured by DJ Bikes, have the option of regulating the amount of power from Level 1 to Level 5. The bikes will travel at 20% of the speed limit at Level 1 and 100% of the speed limit at Level 5. If you select the Level to 0, no power will be supplied to the pedals, therefore at Level 0, the bikes functions like a regular bike.

Electric Bike Samsung Battery 48V 13Ah

All Electric Bikes manufactured by DJ Bikes come with Lithium-ion batteries. They are preferred to other batteries, as they are rechargeable. The other advantages include:

  • Low maintenance, as compared to lead acid batteries, where water levels have to be checked regularly
  • They have a longer lifespan, which reduces the total cost of your Electric Bike
  • It is easier and faster to charge. The maximum charging period for the batteries provided with all bikes manufactured by DJ Bikes is 6 hours.
  • They are lighter in weight when compared to other same sized rechargeable batteries

The question now arises, what can be done to improve the efficiency and longevity of lithium-ion batteries. What are the necessary steps required to get optimum performance of an Electric Bike battery?

Charging

It is advisable to charge your Electric Bike’s battery immediately you receive the package; however, it is highly recommended you stop charging the battery immediately the battery is full (100%). If you continue to charge the battery when the maximum battery level has been attained, please note this leads to over-charging at elevated temperatures, and may result in internal lithium metal plating accelerated by a lasting loss in capacity. In lame man’s language, it causes irreparable damage to your battery.

Re-charging

It is not advisable to allow the capacity of your battery drain off completely, i.e. 0%, before recharging (always avoid full discharges). It is highly recommended you recharge your battery, when the battery level is between 20% and 30%. When charging your battery for the first time, it is OK to reach the maximum battery level (100%), however, it is highly recommended you avoid charging to the maximum capacity on subsequent occasions. As far as it is possible, always avoid fast charging or high loads.

At temperatures below 0oC, it is advisable not to charge your battery. This causes metal plating at the battery anode, and can make the battery volatile and dangerous because of the generated heat.

 

Electric Bike Samsung Battery 48V 13Ah for DJ Fat Bike

 

 

Storage

For an elongated battery life, it is recommended batteries are stored at 40% battery level at a cool temperature. The advisable range of temperature storage is between 5oC or 20oC. This is because lithium-ion batteries do not like high nor low temperatures. Temperatures above 20oC decrease the battery life. It is also not advisable to leave the batteries unused for an extended period of time. Therefore, charge at least once every six months to a 50% capacity and store separately from the Electric Bike. Since 4oC corresponds to the temperature of a refrigerator, you might be tempted to store your battery in a fridge. Wait! Don’t! The reason being a refrigerator is damp, and this can cause the rust to the battery parts.

Operating conditions

When operating your Electric bike, the advisable range of battery level between 30% and 80%

Handling guidelines

  • Do not attempt to dismantle, deform or create holes
  • Fire or water should not be used to dispose a lithium ion battery. Always check with the local regulatory authorities if you want to dispose or recycle. Do not dump batteries in the local dump or landfills
  • Always keep far from the reach of children
  • Do not touch any leaking fluids on your battery
  • Do not rub your eyes, should there be any eye contact with fluid. Instead, lift upper and lower lids, and use water to wash eyes carefully and thoroughly for at least 20 mins, at least until there is no indication of the fluid. Then seek medical help immediately
  • Do not use batteries that have been damaged

In summary, the lithium ion batteries (especially the ones that come with the bikes manufactured by DJ Bikes) are superb, and are designed for longevity. However, its performance and efficiency depend on the maintainability and usage by the user.

All batteries that come with bikes manufactured by DJ Bikes come with a Hazmat Safety (UN38.3) and UL certification, which have passed all quality assurance and control product tests. They are also shipped under the best practices and standards.

 

Electric Bikes during social distancing

By Daniel Yang
on May 23, 2020
2 comments

A few months ago, you probably did not know the phrase, but “social distancing” is now one of the most commonly used phrases in the world. Medical experts, for the past few months, have stressed the importance of social distancing in slowing the spread of the dreaded COVID-19 virus. Cities round the world have been in total lockdown, with companies now allowing their employees to work remotely from home. To flatten the curve, medical experts advise we go out only for groceries, medical needs, essential requirements and for exercise. The message has been resoundingly clear, we need to keep at least 2 metres (6ft) from each other.

It’s a good thing however, that Electric Bikes have not been banned anywhere, and it provides a useful and reliable cost-effective means of transportation. Electric Bikes will surely come in handy with trips to the grocery and drug stores, or other essential needs. While the global pandemic has resulted in a sharp decline of gas pump prices, it is still not free. You have to pay to put gas in your car. Electric Bikes, in harsh economic times like this, is a cheaper way to travel, especially for very short distances. Can you imagine how much savings you will achieve if cut down on your gas purchases for your car, (and probably pay less for car insurance), if you switch to Electric Bikes? The answer is an affordable (i.e. inexpensive) Electric Bike, like the ones manufactured by DJ Bikes.

 

These are truly tough times for everyone. Governments, organizations, frontline health care workers (who are doing a terrific job by the way!!), and you reading this. The truth is in a global pandemic, everyone feels the brutal impact and it can surely be devastating. Your body, however, does not need to feel the brunt of the current harsh realities. You need your body to stay healthy, sharp and alert. How can this be done when all gyms are shut down? And even when you go out for exercise, you still have to maintain the 6 metres physical distance from everyone else. If you are a fitness enthusiast, and you seriously need to burn all those calories or maintain the 10,000 steps every day, or if you are glued to your computer screen these days because you work from home, and you have that feeling that you surely need to do more exercise, then you might want to consider the array of excellent products DJ Bikes manufactures.

So perhaps you are now considering buying one of those cool Electric Bikes. You are now probably wondering if we can still ship to you? Well, oh yes, we have not stopped shipping bikes. We are just like almost everyone else these days, as we too work from the comfort of our homes. This does not affect our efficiency or determination to go above and beyond to satisfy our ever-increasing customer base. Should you decide to buy our bikes, and are thinking how you are going to assemble the bike, since many shops (including bike shops) are closed currently? You need not worry, all the bikes manufactured by DJ Bikes are designed for you to assemble by yourself. You only need to have the proper tools and yes, the confidence, if it is your first time.

What is Direct-to-Customer Price? How about Quality and Service?

By Daniel Yang
on March 29, 2018
5 comments

What is Direct-to-Customer Price? How about Quality and Service?

What is the direct-to-customer price?

You soon will realize that DJ Bikes offers about half the price comparing with other electric bikes with similar specifications and performance at local stores or on the internet because we are the only entity between the manufacturer and customers. There is no distribution layer, retail markup or high price tag. We offer you the direct-to-customer price and want to empower you to bypass multiple layers of distribution channels to get affordable electric bikes. 

Then how about the quality control and service?

DJ Bikes designs, builds, quality checks, imports own bikes and provides full service to our customers. We understand that it will take a great service to keep your bikes running well. The owner Daniel and Jolin will be the person picking up your phones and answering your sales and technical inquiries with full knowledge and passion about the bikes and own DJ Bikes brand.

DJ Bikes has just won the title of "Amazon's Choice for Electric Bicycle". There is only ONE electric bike out of the Amazon marketplace can be awarded based on the received rating, customer reviews, and price. It is an honor to share with all our customers. 

Why You Need An Electric Bike?

By Daniel Yang
on March 29, 2018
1 comment

It is not a secret that cycling makes you fitter. Research shows that it also sharpens your thinking and melts away stress. But while attitudes toward cycling are changing, so are bikes themselves.

Electronic bicycles, also known as e-bikes are seriously making a major impression. While they look like normal two-wheelers, they have a built-in electric motor for propulsion, some kick in with pedaling and others have engines where you can thumb the throttle.

So, you’re wondering, if the bike is doing the work, where’s the exercise? Well, the trick to making your e-bike a fitness tool is to use the motor just enough to keep going. Cycle until you’re either wiped out or you hit a steep hill, and then rev the engine for that extra Oomph.

Now this is where DJ Bikes comes in, a stylish, friendly, personable and warm Canadian brand run by its owners Daniel and his wife Jolin. I have conversed with the owner Daniel and I can truly attest to him being so warm and friendly with a strong entrepreneurial spirit and genuine care for his customers and brand. People really love talking to Daniel because of he himself serves DJ Bike’s customers and has a passion for his brand/products.

D and J have mastered the true nature and craft of this business, having ridden bikes and played sports all their lives. They also have 15 years of international consulting and technical experience which led to the birth of DJ Bikes with the passion to make eco-friendly, high-quality and economical products really shining through with their brand.

Both Mountain and City electric bikes have a sophisticated and luxurious feel out and determined to serve commuters. The bikes equip powerful 500W motor and 48V/13Ah battery coming with strong, lightweight, sporty aluminum frame and high-quality mainstream components. They are economical, fast, silent and fun to ride. They’ve got a lithium-ion battery which can be charged on the bike, or easily removed for storage or charging in your home, office, or on the go.

What’s more? DJ Bikes offers price-for-everyone bikes with only $1399. I have searched over the internet and can not find anything to beat this price with the same or similar specifications. Daniel told me that his passion is to have everyone to be able to afford an electric bike despite of age, sex, ethical background and body shape. After all, we all can share joys of riding bikes. Daniel’s passion has been evidenced by excellent reviews on Amazon.

“My wife just got this ebike and absolutely loves it! Very sturdy and well built — it has the more powerful 48V motor and large battery. I have a mountain bike version of this, but she wanted a step-through frame. If you never have ridden an ebike, they are amazing. We are in our 60’s and these bikes allow us to ride farther and more easily than a regular bike. You can select the amount of electric assist the bike provides — from 0 assist to completely running on electric (no pedaling). Range is expected to be 25 to 40+ miles per charge, depending on the assist level. I have about 25 miles on my last charge (riding at assist level 1 & 2) and the battery still indicates it is 3/4 charged. So they deliver.

I actually bought this bike on ebay, but the vendor uses Amazon to sell the same bike. Our bike did arrive with some shipping damage (broken King meter), but I contacted Daniel Yang, the vendor, and he shipped me a replacement meter. He was a great guy to work with and stood behind his product. I spoke with him several times and he wanted to be sure we were satisfied. Only had the bike a short time, but so far everything is great! My wife and I are looking forward to having many long bike rides together!”     – Reviewed by MarkE:

“Love this bike. It is just what I needed to be able to ride with my husband again after knee issues. Well built and I have received more than one compliment when others see it. The weight of the bike with battery is 63lbs but it’s still manageable if I have to walk it. The headlight would not come on but the retailer has been very good with communication and is sending a new one. I was skeptical about ordering something this expensive sight unseen but have been pleasantly surprised by the overall experience.”  – Another review by Linda 

The pictures of the bikes say it all. If you’re looking for a gas free zero emissions e-bike that will also make you smile more, get a DJ Bikes! Talk to Daniel. I am sure he will make it happen.

Originated from qsfashionandstyle.com.

How Can I Choose My Battery?

By Daniel Yang
on March 23, 2017

urban ryder addmotors lunacycle

The battery pack of your ebike is the most important component, so it would be better to know what you are paying for and how your ebike will perform before making a purchase.

There are many questions being asked about the Ebike Batteries. In summary, users would like to know...

  • Power: How Powerful is it?
  • Voltage: What Voltage of battery should I purchase?
  • Safety: What Certifications should a lithium battery have?
  • Life Span: How Long does the battery last?

 

Power

Speaking of power, we need to understand the math behind it. The unit Watt-hour (Wh) is the power rating of your Ebike Battery. The battery determines how long your bike will go. So how does the motor relate to your battery? Let me give you 2 examples.

1. If you own an Ebike with a 250 watt motor and a 250 watt-hours (Wh) battery. The battery will last you an hour (250/250) at full throttle. However, the low 250 Wh battery can not give you too much assist. 

2. If you upgrade your Ebike with a 500 watt motor and a 625 watt-hours (Wh) battery. At full throttle, the battery will last 1.25 (625/500) hour, and you will be given twice as much boost as you get from the 250 watt motor.

Therefore, a high watt-hours battery gives you a longer range and comes with a higher price.

 

Voltage

In general, you want to choose a higher amp battery over a lower amp battery. You will not damage your controller with a high amperage battery. However, picking the wrong voltage battery is the only thing that could do serious damage to your ebike motor and controller. Get the voltage right and you can’t go wrong with the rest.

 

Safety

A lithium battery in the US and Canada is considered as HazMat ( Hazardous Material) and usually requires to be certified to be able to travel safely. The HazMat certification is UN38.3 governed by United Nations.

Beside that all lithium batteries need to pass a series of physical and electrical tests to endorse the battery performance. These tests include Cell Balancing , Over-Discharge & Over-Current Protection, Free Fall and Temperature tests.

A lithium battery charger also needs to be UL certified to comply with the US quality standard. I have seen many no-name chargers without any certification at the market.

I would also want to introduce you another ebike component. A speed controller limits the top speed of your pedal assisted ebike. In the US and Canada, electric bikes must not employ motor assistance at speeds over 20 miles/h and 32 km/h on level ground. Therefore, I can say that your ebike is safe to ride with the speed controller.

 

Life Span

We suggest going for a good brand battery such as Samsung and Panasonic Lithium Battery which would last longer in a number of charge cycles. These good brand batteries would usually have the lifespan of 500+ charge cycles.  If you are a frequent bike rider then the battery can last about 2 - 3 years.

Here is the list of tips we would recommend you to do to extend your ebike battery lifespan.

  • Always turn your battery key “OFF” after each use.
  • Charge the battery frequently. If possible, before using 50% of the power.
  • When starting from a dead stop, use the pedals to bring the bike up to speed.
  • When riding uphill or against the wind, pedal to supplement the battery power.
  • Avoid riding your bike in heavy rainstorms, thundershowers or extreme weather conditions.
  • Store your battery in a location with a temperature above 50°F/10°C.

 

Why Go Electric Bicycles?

By Daniel Yang
on March 21, 2017

urban cruiser addmotor lunacycle

We all love bikes and have some kinds of bikes in our life. From three-wheelers, road racing, track racing, touring, commuting to mountain biking, we just love bicycles and wish to ride them for fun and exercise.

If you have been worrying about hilly cities, steep ramps, extended commutes, knee or joint pain to prevent you from enjoying cycling, then an electric bike can be a great transportation option for you, including seniors and those with physical restrictions who might still like regular and casual cycling excursions.

The concept of the electric bike is that it is pedal assisted. When you are actively pedaling, it will provide assistance when you need it. The motor will detect when you are working harder, like when riding up a hill or into the wind, and automatically deliver enough power to offset the extra energy that would normally come from you. You have the option of activating this feature to be on standby or disable it completely if you decide to go it alone.

City commuters will enjoy having an option of employing supplemental power when tired or sore or on the way back from the office, as well as the luxury of avoiding heavy city traffic and costly parking fees/tickets.

No matter what your abilities entail, an electric bicycle offers a fun way to get in exercise, get around, or simply enjoy the sights and sounds of your favorite city. It is a gas-free, environmentally friendly products which will save your gas money in a long run.

Come ride with us.