Frequently asked questions and doubts

1. Shipping and returns

2. Warranty, service and support

3. General FAQ

4. Rules and regulations

5. Questions about the battery

1. Shipping and returns.

  • How much is the shipping?


Once the order has been shipped, the customer can directly contact the shipping company for any delays or shipping issues.

(1) Excluding Melilla, Ceuta, Canary Islands and the Balearic Islands. Consult supplement.

  • Returns and exchanges policy.

Have you changed your mind? No problem!

Exchanges are allowed within the first 15 (1) days after receipt of your item. Shipping costs will be the responsibility of the buyer and the item must be in the same condition as it was received, along with the original packaging. Exchanges are not allowed with the purchase of a "Refurbished" or "Demo" .

(1) For customized items, BKSlides reserves the right to return.

  • How can I check the status of my order?

If you have placed an order for a #Slider on, we will inform you by email. You can check the current status of your order by accessing the Order Status page on our website.

Once your product has been shipped, you can use the tracking number emailed to you and check the carrier's website.

  • Shipping damage.

Shipping damage is a bummer, but we're here to help.

If your product has been shipped and arrived damaged, please contact us directly by email within 2 days of the delivery date, with photos of the product as well as the condition of the packaging for verification.

Although we carefully package and protect our products from potential damage, please note that any damage caused by shipping is not covered by any direct warranty. We will mediate between our client and the transportation company to reach a solution.

You can contact us by email at .

2. Guarantee, service and assistance.

  • How long is the warranty?

For the entire EU there are two years of Warranty. And outside the EU, one year.

  • What does "Refurbished" product mean?

We sometimes receive factory bikes with minor cosmetic defects or are missing non-essential components or were used as a demonstration for a short time. In any case, they are bicycles that we cannot sell as "new" . These bikes undergo a full inspection to ensure they are working as they should. We offer a shorter warranty period for its "Refurbished" status and adjust the price accordingly.

  • Can I drive my #BKSlider in the rain?

It will depend on the item. Please consult the technical sheet of each product and if you have any questions contact us.

All BKSlides e-bike models are partially waterproof but it is impossible for them to be completely waterproof. As with any electrical device, use with extra caution if you are at risk of getting any part such as the controller or battery wet as this could cause problems with the performance of your e-bike and/or void your warranty.


  • How does my e-bike arrive?

The assembly and first adjustment of your BKSlides e-bike does not require special skills, just a set of tools that comes in the box with your e-bike is enough. If you are not sure how to assemble it, you should have it assembled and set up by a specialist shop.

Here's how our e-bikes are shipped:


To obtain user manuals and other downloads, request them by email at

  • Why is it advisable to perform a tune-up on my new e-bike right out of the box?

Although we carry out a pre-delivery inspection on all the bicycles we send, it is advisable to tune them up. This will ensure that all necessary components are properly lubricated, that everything is tight, and will improve your overall experience.

It is important to carry out proper maintenance to ensure optimal performance and safe driving. Regularly lubricate the chain, derailleur, sprocket and all moving parts. Always check the condition of your e-bike before using it and make sure it is well maintained. Cables, spokes and chain can stretch after an initial break-in period of 80-160 km, and bolted connections can loosen. It is recommended to do a check after the initial break-in period of 80-160 km.

It is very important to have the proper air pressure in your tires. Never over- or under-inflate tires. Low pressure can cause loss of control; and overinflated tires can burst. Always inflate your tires with a regulated air source and a pressure gauge available. The suggested pressure is printed on the sidewall of the tire.

Before changing a tire or tube, make sure all air pressure has been removed from the tube before removing the tire from the rim. Failure to remove all air pressure from the chamber could result in serious injury.

If you do not have the experience, skill or tools necessary to maintain or adjust your bicycle, it is recommended that you consult a professional.

Any local bike shop will be able to perform regular tune-up and maintenance for your BKSlides e-bike.

  • Engine maintenance.

We only use the best electric motors in the sector. Our motors are extremely reliable and 100% maintenance free. We only use BAFANG, MAC and QS motors, all brushless.

  • What regular maintenance is required?

Apart from keeping the battery charged, the maintenance of a BKSlides e-bike is the same as that of any standard bicycle. Once you've taken the bike out of the box and taken it for a little test ride, you'll want to do a basic tune-up. This is standard procedure for all new bikes.

Bicycle maintenance is a huge topic, so in this article we'll start with the basics: a pre-ride inspection, securing bolts, and cleaning and lubricating key components.

Also, don't overlook regular maintenance by a bike mechanic. If you ride your bike regularly, take it in for a tune-up twice a year to ensure that complex and difficult-to-assess components, such as spokes, bearing surfaces, derailleurs, and cables, are inspected and review regularly. These bicycle parts should always be checked and adjusted by experienced mechanics.

Bicycle inspection.

The best defense against loose components is a routine inspection before each outing. This will help you detect potential problems before they become security risks. Most pre-ride inspection adjustments can be done with a simple bike multi-tool.

The AFC: Air, brakes and chain.

Before every ride, be sure to check the "AFC" to make your ride safer and help your bike last longer.

A for Air.

Having well-inflated tires helps prevent punctures. Check the recommended pressure on the side of the tire. While you're checking the air, take the opportunity to make sure the quick release levers and thru axles (if equipped) are also tight. Next, before you head out to ride, make sure you have your patch kit and pump with you.

F for brakes.

Squeeze the front and rear brake levers to ensure that the brakes engage correctly and smoothly.

C for Chain.

Look at your chain and all the gears. Keeping the chain lubricated and everything clean will make the bike shift gears more easily and make the drivetrain (made up of the front chainrings, rear cassette, rear derailleur, and chain) last longer.

Secure the bicycle bolts.

Bicycles are held together by dozens of nuts and bolts. Keeping a "tight boat" is important because loose (or poorly tightened) bike parts can cause serious wear, cause poor performance, and create a safety hazard. Overtightening can cause component damage or failure.

Cleaning and lubricating the bicycle.

It is important to carry out a regular maintenance schedule (monthly, weekly or more often, depending on your type of driving). If you spend a lot of time riding in wet and muddy conditions, or if you ride hard, fast, and frequently, plan to clean your bike more frequently.

Keeping bicycle parts clean and lubricated is crucial for good performance. Lubrication protects moving parts from excessive wear caused by friction, prevents them from “freezing,” and helps keep rust and corrosion at bay.

However, be careful. Excess lubrication can cause poor performance and component damage (excess lubricant will attract dirt and other abrasive particles). As a general rule, excess lubricant should always be carefully wiped off before riding the bike.

Tip: When lubricating several parts at once, remember the order of application of the lubricants. Wiping off excess lubricant in the same order will give the lubricants time to absorb.

The following recommendations allow you to perform most cleaning and lubrication tasks:

Clean rags: Have plenty of them on hand for tasks involving grease, oil, wax, general cleaning and drying.

Brushes: Have various sizes and shapes to reach hard-to-reach places and remove dirt that rinsing alone can't. Old toothbrushes work great.

Water: When used carefully, water can be a very useful tool. But water, especially if it comes out of a high-pressure hose, can damage the sensitive electrical systems of the entire e-bike.

General Soap/Cleaner: For frame cleaning, use diluted dishwasher soap or a pre-formulated bicycle cleaner.

Degreaser: A bicycle-specific degreaser (avoid kerosene or turpentine) will clean rubberized parts, such as the bicycle chain. Choose a solvent that doesn't harm the environment (or you). Dispose of all solvents properly.

Chain Lube – Proper chain lubrication helps extend drivetrain life. Always apply bicycle-specific lubricating oil to a clean chain.

There are two types of lubricant: wet or dry. Wet lubricant is most suitable when driving in humid conditions. It adheres strongly to the transmission and is less likely to wash away in rain. However, dirt and sand also stick to it, so be sure to wipe off excess lubricant.

Dry lubricant is best in a dry environment. Dirt and grit stick less to dry lube, but dry lube rinses off easily if you're driving in the rain.

What to clean and how?

Most dirty bike components can be cleaned by gently wiping with a damp (or dry) cloth. Other components require occasional brushing, scrubbing and relubrication.

The transmission (front chainrings, rear cassette, rear derailleur and chain) is the one that deserves more frequent attention.

The chain: The chain is the part of the bicycle that should be lubricated the most. Clean and lubricate it frequently to reduce the rate of wear.

To clean chains that do not have too much accumulated dirt, just use a cloth and degreaser. For very dirty chains, you can use a chain cleaning device, which is more thorough and much less dirty.

Once the degreaser has dried, slowly apply drops of lubricant to the chain, putting a little on each link. Let the lubricant dry and then wipe off excess lubricant so it doesn't attract more dirt.

In general, lubricate your chain whenever it squeaks or seems "dry." Lubricating after wet rides will help prevent the chain from rusting.

Front chainrings and rear cassette: Scrub the surfaces with a brush and degreaser while turning the pedals. If there is a lot of dirt built up, use rags to clean any dirt and "floss" between the gears.

Brake and Derailleur Levers: Apply a drop or two of lubricant to the lever pivots and barrel adjusters periodically to keep them working properly.

Brake and derailleur cables: Check them frequently (especially in wet conditions) and relubricate them from time to time so they can efficiently transfer their commands to the component groups.

Brake and derailleur assemblies: they are made up of a series of small moving parts. Keep an eye on its arms, wheels, and pulleys so they don't get stuck or stiff. Apply lubricant to the pivot points.

  • Where can I maintain my e-bike?

All of our e-bikes are designed with service and maintenance in mind. Any local bike shop can service your e-bike, including:

  • Mechanical/hydraulic disc brake adjustments.
  • Shimano gear shift adjustments.
  • Shimano derailleur adjustments.
  • Chain maintenance.
  • Seasonal tune-up.

If any electrical part of your e-bike fails, we have a do-it-yourself replacement for each component. They are literally Plug N' Play and we offer online support and detailed instructions on how to replace every major electrical component. In addition to our online support, you can take your e-bike to a local bike shop.

Please check with your local bike shop if you need repairs or maintenance. You also have our online advice. In the event that we cannot remedy the situation remotely or a local bike shop is unable to repair your bike, we can have our technician take a look at it from our facility in Alicante.

  • How can I fix brake noises?

  • Video 1
  • Video 2
  • How can I install the pedals?

One of the easiest items to install on a bike are the pedals, however, they can also be the most difficult if you don't know about reverse threading. Here is a great video to explain how to install the pedals on your new bike.

  • Video
  • Modification of the maximum speed limit on the bicycle

It is totally prohibited and any change to these parameters means the loss of the warranty.

  • Pre-driving inspection.

Before each ride you need to inspect your e-bike to make sure there are no loose fixings or accessories. If you are not sure how to perform a complete health check on your e-bike before each ride, you should check with a local store.

Be sure to specifically check that both the front and rear axles are secured. Make sure all hardware is secured and all approved accessories are properly attached to your e-bike. Check that the handlebars, handlebar stem and seat post are correctly attached, aligned and adjusted to the user.

Tires and wheels

It is necessary to check the tire pressure on both wheels before riding to ensure that they are inflated to the recommended pressure. The rider is strongly advised to check the suggested pressure, which is printed on the sidewall of the tire. Tires without the correct air pressure can reduce performance, increase tire and component wear, and make riding your bike unsafe. Check that the tires and inner tubes are in good condition and make sure there is no visible damage. If you notice any punctures, cuts or damage to the tires or inner tube, they should be replaced.


Check the brake pads for wear and make sure they are not excessively worn and that they are positioned correctly in relation to the rims. Make sure the brake cables are lubricated, properly adjusted, and show no obvious wear.

Pull the brake levers to ensure that the brakes are not damaged and operate accurately. When fully tightening the brake levers, make sure that neither the front nor the rear brake levers touch the handlebars. If you encounter a problem, take your bike to a local shop for inspection.

The wheels must always turn in a straight line. If they wobble from side to side or up and down, or if the wheels become misaligned or the spokes become loose, they need to be repaired. Do not attempt to straighten or tighten unless you have the proper knowledge, tools and experience. It is recommended to go to a bicycle shop for inspection.

Crank and pedal chain

Make sure the chain is clean, greased, and runs smoothly, that the pedals are tight to the cranks, and that the cranks are tight and not bent.

Engine transmission and throttle assembly

Check that all power cables to the motor are secure and not damaged, and ensure that the motor rotates smoothly and that the motor bearings are in good working order.

Electric cables

Check that the connectors are fully seated and free of debris and ensure that all cables and cable housing are free of damage. Make sure your headlights, taillights, and brake lights are working properly.

Battery and battery charger

The battery MUST be securely fixed in the battery holder of the frame before use and make sure the battery works properly. It is recommended that you unplug the battery charger from the power outlet and store it in a safe place before driving.

3. General FAQ's

  • Why haven't I heard of BKSlides e-bikes before?

If you have asked yourself this question, continue reading.

We are a small web based business selling small quantities of high quality electric bikes which we sell at factory direct prices. We don't have the huge marketing budget that a high-volume discount brand has, and we refuse to dilute our brand to crowdfund.

We do not intend to be the ones that sell the most, but rather to provide quality service at a good price.

We don't seek to be the biggest, just the best! We are passionate about our brand and we are dedicated to offering the best products on the market in relation to quality/price.

  • Do BKSlides electric bikes have a throttle?

In Europe, we are NOT lucky enough to have the luxury of accelerators on our e-bikes (EPAC), which are allowed in other places in the world. For other uses (SpeedBike, ...) The use of accelerator is allowed.

The throttles provide all the power on demand and we love them because they give us total control. They are especially useful for starting from a standstill (sometimes it can be awkward to gain momentum), getting a quick burst of power to go up a hill, or safely traversing an intersection.

  • What is intelligent pedal assistance (iPAS)?

Intelligent pedal assist automatically starts the motor when you pedal. With pedal assist there is no need to use a throttle to control the motor.

The integrated speed sensor uses a series of magnets in the crank arm, which turns the motor on when you start pedaling and turns it off when you stop. It works more or less like a switch. You have to control the boost level and speed by adjusting the assist mode manually up and down using the LCD screen control. This is the most common type of iPAS.

  • How can I contact BKSlides?

We have several ways for you to contact us:

Email us at We respond to all emails within 24 hours.

On any of the social networks in which we are present, Facebook or Instagram.

Or fill out the contact form and one of our online support employees will contact you within 24 hours

4. Rules and regulations

  • Are these e-bikes and electric scooters street legal?

It depends on your jurisdiction, please check your local laws. But in general terms within the European Union, the regulations establish that with a continuous motor power of less than 250W, and at speeds less than 25 km/h, neither a license nor insurance is necessary to use an electric bicycle on public roads. . You can also continue to use bike lanes or any place where a normal bicycle is allowed. It is up to the consumer to inform themselves about the legal situation in their own city and/or state/province.

The general regulations for ebikes in the EU:

  • Power of 250W.
  • Engine assistance restricted to 25km/h maximum.
  • The e-bike must be equipped with an engine shutdown system when braking.
  • The motor must be disconnected when the operator stops pedaling or applies the brakes.
  • The pedals must be able to operate the e-bike when the motor is not connected.

  • Do I need a license to drive a BKSlikdes electric bicycle/scooter?

Consult the product technical sheet. If it is within the legal parameters of the country, no license or insurance is necessary, but this may vary depending on which area or municipality. PLEASE always check your local regulations.

  • Do I need insurance?

The circulation permit and civil liability insurance are not mandatory in Spain for the EPAC , but they are for other models that fall outside that category. PLEASE always check your local regulations. Be sure to check with local authorities.

5. Questions about the battery

  • How to properly charge the battery?

Never charge the battery with any chargers other than the original one you received.

The charger will display a red light indicating the battery is charging and when fully charged the light will change to green.

The charger will automatically stop charging once the battery reaches its maximum capacity. However, it is recommended to remove the charger from the battery within one hour of fully charging. DO NOT CHARGE THE BATTERY FOR MORE THAN 8 HOURS. Leaving the charger connected to the battery and power source could cause unnecessary damage to the charging components.

If you do not want to use the battery for a period of time (more than a few days) keep it charged to 70% to 75% capacity. The battery will discharge slowly over time, so you should check the battery charge level approximately once a month. When the battery reaches 20%, charge it again to 70%.

The amount of time it takes to charge your battery may increase with battery age and usage. In a well-maintained situation, the average battery life is 800/1000 charge cycles. Over time and use, battery performance can decrease and will reduce your mileage range per charge.

If there is any problem during charging, please stop charging and contact us.

  • Security advice.

    • Keep the battery in a dry space, away from heat or flame sources and out of direct sunlight.
    • Do not store the battery in places with high temperature or humidity.
    • Store and use the charger in a safe place, away from children and where it cannot be damaged by drops or impacts.
    • Before starting each charge, you must check that the charger, charger cables and battery are not damaged.
    • Charge the battery only in dry spaces and where the temperature is between 10-25°C (50° F - 77°F).
    • Charge the battery on a non-flammable surface and with a smoke/fire detector.
    • Do not charge the battery in a damp and wet place or anywhere exposed to strong sunlight and make sure there is no dirt or debris nearby when using the charger.
    • Never charge the battery with other chargers than the original one you received.
    • Avoid leaving the battery unattended while charging.
    • Do not leave the charger plugged in when the battery is fully charged.
    • Stop charging the battery if you notice any damage, extreme heat, leaks, odors, smoke, or discoloration.
    • The charger should be on a hard, flat surface in an open space because air circulation causes the charger to cool. Avoid covering the charger when it is plugged in or charging. The indicator lights must face upward. Do not use with the charger inverted because it may impede cooling and shorten the life of the charger.
    • Avoid submerging the battery in any type of liquid.
    • Avoid touching the terminals on the back of the battery and keep them clean of debris.
    • When plugging and unplugging from the wall, always hold the charger by the plug and not by the cable.


  • What is the useful life of a battery?

All our batteries use the latest generation lithium cells from Samsung or Panasonic inside. Its battery can last several years or approximately 1000 charge cycles. Even after 1000 charging cycles, its charging capacity can be 75%. A charge cycle is defined as one full discharge + one full charge. If your battery is half empty and you recharge it, it is considered half a cycle. So, as you can see, 1000 charge cycles is a LOT!

Lithium batteries do not usually stop working completely, what happens is that they gradually lose their capacity over time.

To extend the life of your battery, we recommend that you avoid completely discharging it and making sure to charge it at least once every two months. When not in use, we recommend that you store it indoors and at room temperature, as extreme temperature fluctuations damage the battery.

  • How far can I go on a single charge?

We get asked this question often. The answer is quite complicated and cannot be summarized in a single figure. Some manufacturers publish very "ideal" range figures, so it is difficult to compare the range of one e-bike with another. Publishing the actual range number may not seem impressive and could hurt sales, however we aim to give a true picture of the battery range of our e-bikes.

The short answer to this question is quite far! We don't hear many stories of people running out of battery.

That said, this can be a complicated question because there is no "standard" and everyone makes very different claims about autonomy. There are several factors when answering this question. Rider weight, wind conditions, tire inflation, throttle use versus iPAS, etc.

Our e-bikes travel between 50 and 100 km per charge.

  • Does the battery charge while you pedal?

This is one of the most frequently asked technical questions we receive and shows that the advantages and capabilities of electric motors are widely known. The general answer is NO .

Recharging by pedaling is not really the intention of electric propulsion as it is, for example, in a hybrid car. Generally, with an e-bike, a certain amount of energy is drawn from the battery pack to aid propulsion. This energy is then replaced by charging, rather than pedaling harder during use.

With the use of our long lasting batteries there is no need for "regeneration" on our bikes. The more you pedal, the further the battery will take you.

  • How much does it cost to change a battery?

For the first 2 years or 1000 cycles, you don't have to worry about your battery (1) . However, when it comes time to replace the battery, you'll want to know how much it will cost. Our battery replacement program ranges between €300 and €600.

(1) Remember that the battery requires maintenance, failure to do so may cause the loss of the warranty.

  • How to make sense of the tension reading?

Some of our e-bike and scooter models come equipped with a voltage readout. The voltage reading is an accurate reading of the amount of power left in your battery. For example, on a 48v battery, when the voltage meter reads less than 43V, you will notice an extreme loss of power and possibly even stop working as the battery is very low and needs to be recharged.

Here's a table of what that number actually means for a 48V system:

V = Voltage reading

% = Charge left in the battery

Voltage table

  • Battery care.

It is very important to take care of the most expensive component of your electric bike. We only use the most current lithium technology. We currently use Samsung and Panasonic cells in all of our electric bike models. Our batteries are rated for 1000 charge cycles, which should last between 2 and 4 years depending on usage.

What is considered a complete charge cycle? If you use 50% of your battery on a trip, and then charge it back to 100% after the trip, that would be half a cycle. Therefore, a full charge cycle would be to use 100%, and then charge it again to 100%.

LOCK YOUR BATTERY INTO THE ADAPTER! If you have a model with a locking feature, USE IT! Failure to lock the battery in its adapter may cause serious damage to the battery.

Here are some tips for battery care: Video