OKAI ES50B User manual

The manufacturer reserves the right to change and release product firmware
updates and to keep this manual up to date.
https://www.okai.co

ES50B
Instruction Manual

1.Introduction
1-1.Technical data........................................................................................
1-2.Symbol Explanations.............................................................................
1-3.List of finished product and parts.........................................................
2.Intended use................................................................................................
3.Safety instructions
3-1.General safety instructions...................................................................
3-2.Battery safety instructions....................................................................
3-3.Safety instructions for battery charger.................................................
4. How to use
4-1.Instructions for first use.........................................................................
4-2.Riding preparation.................................................................................
5.Maintenance,Cleaning and Service
5-1.Maintain..................................................................................................
5-2.Clean.......................................................................................................
5-3.Storage and transportation...................................................................
6.Disposal...........................................................................................................
7. Explanation of error code..............................................................................
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Thank you for purchasing the OKAI electric scooter.
1.Introduction
OKAI sincerely hopes that you can ride the scooter safely and enjoy a comfortable riding experience.
Since riding a scooter carries certain risks, please read this practical manual carefully before riding, and
adequately prepare before going on the road. Please keep the instruction manual in case you need it
from time to time. If you give the electric scooter to others, please also provide them with this user
manual. Failure to comply with this user manual may cause serious injury to people or cause damage
to the product. OKAI does not assume any responsibility for this. In order to be concise and easy to
read, the OKAI E-Scooter will be referred to as“ product” in the following Content.

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1-1.Technical data
Dimensions(Unfolding):length,
width,height
Dimensions(folding):length,
width,height
N.W.
Maximum Speed
Range
Parameter
Battery Paramete
Motor Paramete
Maximum Gradient
Adapted terrain
Operating temperature
Storage temperature
IP Rating
—20～45℃
Finished productIPX4
Rated Voltage 36V
5.2AH（10 strings 2 parallel）
Rated Capacity
Negative point port
Battery management system
Battery （cell）Qty
No
Swappable battery?(Yes or No)
20Pcs
Charging cabinet version /
Motor size 8inch
Max torque 15N.m
Rated Voltage 36V
Rated power 250W
Max power 500W
Motor control mode Brushless gearless motor
0～40℃
Flat
≤20Km
10%
14KG
25km/h
928*500*1095mm
928*500*510mm
Item Product Model ES50B
Charging time 2A＜3.5H

*Specifications are subject to change without prior notice.
*Range: When fully charged, with a load of 75kg, an ambient temperature of 25°C, driving on a flflat
road at a constant speed of 60% of the maximum speed.
*Factors affecting the range include: speed, ambient temperature, climbing, number of starts and
stops, etc.
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Item Product Model
Brake stopping distance
Brake Type
Tire Size
Tire material
Charger
User
Characteristics
Bluetooth
Packing
Brake
Tires
Input voltage
Output voltage
Output current
Max Load 75KG
2A
42V
100-240V
8inch
Maintenance-free rubber tires
Rear:drum brake
Recommended age
Required height
Ride Mode
Brake light
Certification
Frequency
band(s)
Maximum frequency
band power
2.4000-2.4835GHz
20mW
Manner of packing 1pc/ctn
G.W. 18kg
/
/
FCC ,UL testing report
Sea and air transport reports
>14 years old
120-200cm
＜10M
ES50B

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1-2.Symbol Explanations
IIndicates a hazard signal with a high degree of danger. If not avoided,
death or serious injury may occur.
A hazard signal that indicates a moderate hazard. If not avoided, death or
serious injury may occur.
A hazard signal that indicates a lower hazard. If not avoided, mild or
moderate injury may occur.
This symbol marks additional information and instructions about the
product and its use.
This symbol represents compliance with "EU standards", which means
"compliance" with EU directives. The manufacturer makes a CE mark to
confirm that the product complies with applicable European directives
and regulations.
Please read the instruction manual carefully before use.
Positive and negative display.
This product is a second-class protection product.
Wear personal protective equipment (PPE)
The product can be used by only one person at a time.
It can only be used on flat and dry roads.
Please do not use this product after taking alcohol, sedatives or
psychotropic drugs.
Minimum age: 14 years old.
Do not enter the road with these signs.
DANGER
WARNING
CAUTION

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1-3. List of finished product and parts
Size: Length928mm* width500mm*height 1095mm
Rear hub motor
Kickstand
Frame lower cover
Frame Upper
cover
Rear fender
Buckle hook
Handlebar upper cover
Meter Screen
Button
Corrugated ring
8inch Front wheel set
Front fork
Foldable front
steering tube
Headlight
Brake lever
Finger thottle
Grips
Brushless controller
Front fender
Bell

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·An electric scooter is intended for sport and entertainment purposes, not for use as a means of
transportation, but the transportation faction of the product once you drive it into public areas (as
permitted by the laws and regulations of your region and country)also carries potential safety risks for
all vehicles. Drive strictly in accordance with the instructions in this manual to ensure the safety of
yourself and others to the utmost extent, and to ensure compliance with national first-level traffic laws
and regulations of various provinces and cities, such as traffic regulations, etc.
·Please note: Once you drive an electric scooter on public roads or other public places (as permitted
by the laws and regulations of your region and country regarding the use of electric scooters on public
roads or other public places), even if you fully comply with this safe driving guide operation, you may
also face risks caused by illegal driving/improper operation by others, or other vehicles. Just like when
walking or riding a bicycle, you may also be injured by other vehicles. As with any vehicle, the faster
you drive an electric scooter, the longer the distance required to brake, and emergency braking on
smooth surfaces may also cause the wheels to slip and lose balance or even fall over. Therefore, it is
very important to be vigilant when driving, maintain a proper speed, and maintain a reasonable and
safe distance from other people and vehicles. When driving on unfamiliar terrain, stay alert and drive
at a low speed.
·Please respect the pedestrian's right of way when driving. Avoid frightening pedestrians, especially
children.
·When driving in countries and regions where there are currently no national standards and
regulations related to electric scooters, such as China, please be sure to comply with the safety
requirements for drivers in this manual. Zhejiang OKAI Vehicle Co.,Ltd. will not bear any direct or joint
liabilities for any financial losses, losses of life, legal disputes, or any other unfavorable events that
occur due to the violation of the recommended uses indicated in this manual.
·To avoid potential injury, do not lend the electric scooter to people who can't operate it. If you give
the electric scooter to a friend to use, please be responsible for your friend's safety, teach them to
operate the scooter, and tell them to wear protective equipment.
·Please perform a basic inspection of the electric scooter before each driving. If you find that there are
loose parts, the battery life is obviously reduced, the tires are excessively worn, the steering makes
abnormal noises or malfunctions, etc., please stop using the scooter immediately, and do not force it
to drive.
This section lists the safety instructions that you should follow when using this product.
It may be dangerous to use this product! Learn to use the product step by step and spend enough time
on practicing. Please follow all the tips and warnings set forth in this manual to reduce risks but
cannot eliminate all risks. Therefore, even if you have enough practices, guidance or expertise, you
may still lose control, collide or fall over, which may cause serious consequences.
1. An instruction to keep the printed instructions for further reference and to be read carefully before
use.
2. Maximum speed allowed: 25 km/h.
3. Pregnant women, the disabled, and those who suffer heart, head, back or neck diseases (or have
undergone operations on these parts) should not use this product.
3-1 General safety instructions
2. Intended Use
3.Safety Instructions

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4. Do not use this product after taking alcohol, sedatives or psychoactive drugs, so as not to affect your
judgment.
5. Keep a distance of at least 1m from pedestrians, other vehicles and any obstacles.
6. This product can only be used when the environment permits it and the personal safety of bystand-
ers is guaranteed.
7. Pay attention to the obstacles in front places and those far away, the unobstructed view will be
helpful for safe use!
8. This product may be used by only one person. It is f orbidden t o use this product with others. Don't
make sharp turns when driving the scooter at high speed.
9. Avoid sudden acceleration or sudden braking; do not lean your body for acceleration.
10. Excessive forward or backward is strictly prohibited.
11. Do not misuse this product.Do not use this product on roadsides, ramps, in skate
parks, empty swimming pools, or any place similar to sliding plates.
12. Do not use this product to cross obstacles, slopes, ice or snow, nor climb up or down steep
slopes,stairs or escalators.Do not expose this product in the rain.
13. Do not use this product in places where the depth of the puddle exceeds 2cm, because water may
enter the motor.
14. Don't jump on this product.Don't try to use this product to do any acrobatics or juggling.
15. In order to avoid distraction when driving the scooter,please do not wear earphones, earplugs,-
make or answer calls, take pictures or videos or do any activities that are not related to driving, so that
you may monitoring the external environment well while driving the scooter.
16. Be sure to hold both handles when riding.
17. Do not use this product at night or in places with poor light.
18. When you encounter pedestrians or other obstacles, check if you can pass safely.
19. Please use this product and its accessories at an appropriate temperature. Pay attention to the
temperature requirements for battery charging.
20. Please always wear personal protective equipment (to protect wrists, knees, head and elbows)
suitable for your weight and size to avoid injury. In working areas, local laws or regulations may have
minimum requirements for helmets. In addition, it is suggested that safety mirrors be worn.
21. According to French traffic rules, reflective clothing and helmet is strongly required during cycling.
22. Do not hang this product with other products or vehicles.
23. When being not used, this product should be parked with the kickstand.
24. Any load added to the handle will affect the stability of the scooter.
25. WARNING! The braking distance will be extended under humid conditions.
26. WARNING! If any mechanical parts are subject to great external pressure and wear, different
materials and parts may react differently to wear. If a part exceeds the expected service life, it may
suddenly break, which may cause injury. Cracks, scratches and discoloration in the area affected by
external pressure indicate that the part has exceeded its service life and should be replaced in time.
27. WARNING! Please keep the plastic cover away from children to avoid suffocation.
28. Please spend enough time practicing how to use this product, so as to avoid accidents caused by
lack of skills.
29. If training is required, the seller may provide corresponding training tutorials
30. When you are approaching pedestrians or cyclists, you may flip / turn the bell for reminding them.
31. When passing a protected passage, please get off and walk through it.
32. Pay attention to protect your own safety and the safety of others in all cases.
33. Do not use this product for other purposes such as carrying people and objects.
34. Using the brake for a long time may cause heating, and thus do not touch it.
35. Regularly check all kinds of bolts, especially the axle, folding system, steering system and brake
shaft.

36. It is prohibited to refit this product, including steering tubes, steering sleeves, steering rods, folding
mechanisms and rear brakes.
37. Accessories and any additional items which are not approved by the manufacturer shall not be
used.
38. When riding, the noise should not exceed 70dB.
39. When using the product, users must wear shoes.
40. This appliance can be used by children aged from 14 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been given
supervision or instruction concerning use of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made
by children without supervision.
41. Traffic in the city has many obstacles to cross such as curbs or steps. It is recommended to avoid
obstacle jumps. It is important to anticipate and adapt your trajectory and speed to those of a pedestri-
an before crossing these obstacles. It is also recommended to get out of the vehicle when these
obstacles become dangerous due to their shape, height or slippage.
42. Get closer to your seller so he can refer you to an appropriate training organization.
43. Avoid high traffic areas or overcrowded areas.
44. In any case, anticipate your trajectory and your speed while respecting the code of the road, the
code of the sidewalk and the most vulnerable.
45. Notify your presence when approaching a pedestrian or cyclist when you are not seen or heard.
46. Cross the protected passages while walking.
47. In all cases, take care of yourself and others.
48. Power-off the vehicle during charging.
49. Do not divert the use of the vehicle.
50. This vehicle is not intended for acrobatic use.
51. Caution, the brake may become hot in use. Do not touch after use.
52. Regularly check the tightening of the various bolted elements, in particular the wheel axles, the
folding system, the steering system and the brake shaft.
53. Eliminate any sharp edges caused by use.
54. Do not modify or transform the vehicle, including the steering tube and sleeve, stem, folding
mechanism and rear brake.
55. The self-tightening nuts as well as the other self-tightening fastenings may lose their efficiency and
that they may need to be retightened.
56. WARNING! As with any mechanical component, a vehicle is subject to high stresses and wear. The
various materials and components may react differently to wear or fatigue. If the expected service life
for a component has been exceeded, it may break suddenly, therefore risking causing injuries to the
user. Cracks, scratches and discoloration in the areas subject to high stresses indicate that the compo-
nent has exceeded its service life and should be replaced.
57. In order to prevent theft of scooter, it is recommended that the user be equipped with a physical
lock.
58. WARNING!Risk of Fire and Electric Shock ‒ No User Serviceable Parts.
59. Prolonged exposure to UV rays, rain and the elements may damage the enclosure materials, store
indoors when not in use.
Failure to use common sense and heed the above warnings will increase the risk of serious injury or
even death, so be careful!
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·The battery should not be exposed to excessive heat such as sunlight, fire or the like. Otherwise there
will be a risk of explosion!
·If this product is not used for more than 30 days, please fully charge the battery.
·Fully charge the battery every 90 days. Otherwise, the battery will conduct self-discharge and be
damaged.
·If the battery emits a strong smell or becomes hot, stop using the product immediately. Do not open
the product casing and don't try to disassemble the battery by yourself.
·Please dispose of the battery correctly and safely.
3-2Battery safety instructions
·Please use the original battery charger provided with the product for charging.
·The battery charger is not suitable for children under 14 years old, people with mental disorders, those
who are disabled, etc., unless they use this product under the supervision or guidance of their
guardians.
·Check again whether the power plug and cable are damaged. If so, they must be replaced by the
manufacturer, a designated service agent or a person with similar qualifications to avoid danger.
·Before cleaning, storage and transportation, disconnect the battery charger from the power source and
allow it to cool down.
·Protect electrical components from moisture. When the battery charger is cleaned or used, do not
immerse it in water or other liquids to avoid electric shock. Do not put the battery charger in water.
When being charged, this product must be placed in a well-ventilated place. After the battery is fully
charged, immediately disconnect the charger from the power source.
·Regularly check whether the battery charger is damaged. A damaged battery charger must be repaired
before use. Do not use a battery charger that has been left exposed for a long time or damaged.
·Do not connect a damaged product to the battery charger. There is a risk of electric shock!
·Do not disassemble the battery charger. Repairs must be performed by reliable after-sales service
personnel. Incorrect assembly may cause fire or electric shock.
·Do not use the charger near flammable and explosive items, otherwise there is a risk of fire and
explosion.
·Please check the technical data before connecting the battery charger to the power source. Improper
use may cause fire! The battery charger should be used indoors only.
·Do not misuse the battery charger. The battery charger is only suitable for this product. Use with other
products may cause fire or electric shock.
·Make sure that the battery charger and the charging port are properly connected and not blocked by
foreign objects.
·Keep the charging port clean, dry, and free from dust and humidity. Do not put any objects on the
battery charger, and don't cover it. Otherwise, the battery may overheat. Do not place the battery
charger near any heat sources.
·Be sure to place the power line in places where no one may trip, step on, or damage it, Otherwise there
will be a risk of material damage and personal injury.
·Do not disconnect the battery charger from the power source by pulling the power line. Please manual-
ly remove the plug.
·Do not attempt to charge non-rechargeable batteries.
3-3Safety instructions for battery charger

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2.Remove the top two paper cards.
This section provides information on how to use the product correctly. To ensure user safety and
service life, it is important to follow these instructions.
4-1 Instructions for first use
4.How to use
1.Open the cover of the package and take out the product manual and accessories.
Product Manual*1
vehicle*1
wrench*2
Screw*4
Charger*1 (Step 5)

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3.Lift the pole, and then buckle the folder handle to fix the pole.
4.Insert the scooter head into the pole, then lock four screws to fix and tighten the hoop screw.
Take out the four M5 screws and
correspondingWrench, insert the
M5 screws into the picture In the
screw hole shown and tighten.
M5

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6.Propose a scooter (for the first use, please activate it according to the instructions in the manual).
5.Take out the intermediate paper card and take out the accessory box (charger).

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8.Function button：Short press the function button to turn on the product, and press it for about 3s to
turn it off,
Press the function button to turn on/off the headlight when power-on;
Press twice to switch to E (pedestrian mode) /L (economy mode) /H (sports mode)
when power-on；
E mode is pedestrian mode, with a maximum speed of 5km/h, which is suitable for
use on pavement;
L mode is economy mode, with a maximum speed of 15km/h;
H mode is sports mode, with a maximum speed of 25km/h;
Press five times in riding mode to switch the speed unit;
Brake lever: Squeeze the brake lever and trigger the drum brake and electronic brake at the same time.
Press the accelerator to accelerate.
7.Uncover the protective cover of the charging port, connect the charger, plug in the power source to
charge and activate the vehicle.
Connect to the
vehicle charging
port
Charging port
Plug in power
Speed display
Bluetooth connection
status display
Light status display
Gear display
Power display
Power button
Brake lever Speed up
Bells Folding hanging ring
(Used to buckle into the rear fender hook when folded)
*When the driving speed is greater than 28km/h,
The headlights and dashboard will flash to alert
the user to speeding.

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9.Wear a helmet and protective gear. 10.Please check the vehicle before each use.
If the folding pole is loose
and shaking, tighten as
soon as possible using
stacker fixing screws.
Press the brake lever to
confirm that braking
power is normal.
12.Release the acceleration handle to reduce
the speed, and squeeze the brake lever to
brake.
11.After pedaling has the initial speed,
use the acceleration handle to accelerate.

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13.To change the center of gravity when turning,
turn the handle slightly.
14.When you need to stop, release the acceleration
handle to reduce speed, squeeze and brake the
handlebar. Lay down the foot support and let the
vehicle lean slightly in the foot support direction so
that the foot support touches the ground, and the
vehicle can be stabilized.
15.Safety warning
Pay attention to
the speed when
riding downhill.
Pay attention to
other vehicles on
the road.
Watch out for
your head.
Do not shake. Do not use your
mobile phone.
Do not ride the
electric scooter
on rainy days.
Do not use the
electric scooter
to carry people.
Always keep your
hands on the
handlebars.
Do not cross large
gaps or steps.
Do not put heavy
items on the
electric scooter.
Do not stand on
the scooter with
one leg.
Do not press the
throttle when
pushing the
electric scooter.
Do not step on
the fender.

③Put down the riser pipe and buckle the
hanging ring of the front of the scooter
into the rear fender hook;
④The vehicle can be lifted by holding the riser.
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16.Folding operation
①Slide the sliding buckle on the folding
wrench up,
②Break down the folding wrench and hold the
riser with your hand to prevent the rise fall down;

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17.Activate the app
Please scan the QR code to download the app (the system version and Bluetooth version are subject to the actual
requirements of the app). You can find the cruise control function in the app, and discover more ways to use the
scooter.
Now, you can use your scooter, check the status of the scooter and detect the scooter through the app.
Please enjoy the ride.
② Open the app, click "Search for Device".
Follow the app prompt to pair with and
connect to the scooter.
①Install APP, please register/login
③Watch the driving guide ④Start exploring a new riding experience