ENGWE-BIKES SJB-1 User manual
ENGWE-BIKES
14 inch Folding Lightweight Electric Bike
Operation and maintenance manual
Before using the e-bike, please read the attached operating instructions.
Carefully read the safety rules.
IMPORTANCE
When using the electric bicycle, basic safety precautions should always be
followed, including the following:
1. Read all instructions.
2. To protect against fire, electric shock and injury to persons, do not immerse
cord, plugs, or e-bike in water or other liquid.
3. Close supervision is necessary when the e-bike is used by or near children.
4. Unplug from outlet when not in charging and before cleaning.
5. Do not operate the e-bike with a damaged cord or plug or after the e-bike
malfunctions, or has been damaged in any manner. Take the e-bike to the
nearest authorized service bike shop for examination, repair or adjustment.
6. The use of accessory attachments not recommended by the e-bike
manufacturer may result in fire, electric shock or injury to persons.
7. Do waterproof when using on a rainy or snowy day.
8. Do not let cord hang over the edge of table or counter, or touch hot
surfaces.
9. Do not place on or near a hot gas or electric burner, or a heated oven.
10. Always attach the plug to the battery first, then plug the cord into the wall
outlet.
11. Do not use the bike for other than intended use.
12. Save these instructions.
SAVE THESE INSTRUCTIONS
- 1 -
Electric Bicycle
SJB-1
*Please note that this is a general manual. So, the frame style of the electric
bicycle (e-Bike) that you have may differ from the picture shown in this
manual.
- 2 -
Importance………………..
……………………………………………………………………..
P1
Compliance with the Law
……………………………………………………………………
P4
Assembling …………………………………………………………………………………………
P5
Operating Your New e-Bike
………………………………………………………………….
P10
Maintenance
……………………………………………………………………………………….
P13
Specifications
………………………………………………………………………………………
P14
Safety
………………………………………………………………………………………………..
P15
Trouble Shooting …………………………………………………………………………………
P17
PLEASE NOTE:
This manual is not intended as a detailed user, service, repair or maintenance
manual. Please seek assistance from a qualified technician for service, repairs
or maintenance.
- 3 -
Read This First: Safety and Compliance with the Law
Congratulations on your purchasing of your new e-bike. Your new e-bike is an excellent
piece of personal transportation equipment that will give you good service for many
years.
Before you start using your e-bike, we want you to be aware of a few important points.
Please read this section carefully..
Observe Laws Regarding the Use of Battery-Operated Bicycles
Your e-bike is designed and manufactured to meet safety requirements as a
battery-operated bicycle. However, state and local laws governing the use of
battery-operated bicycles on public roadways, parks, and other open areas may
differ. Please check with your local authority before using your e-bike in public
areas.
Observe Laws Regarding the Use of Bicycles
Note that all laws regarding the use of bicycles in public areas, such as those
mandating the use of helmets and the use of infant seats, will automatically apply
for e-bikes. Check with your local authority on what restrictions might apply.
The Lithium-ion Battery of Your e-Bike
Your e-bike is equipped with the latest battery technology. The lithium-ion battery
is much lighter than lead- or nickel-based batteries that are being used in some
older models.
Your First Ride
Please be VERY CAREFUL when you are ready to get on your e-bike for the first
time because that the e-bike moves significantly faster than a regular bicycle at
active power-assisted mode. Take your e-bike to an area with a lot of open space
before you start. Do not start pedaling hard as soon as you get on the e-bike (as you
normally would so with a regular bicycle), as the e-bike will accelerate under pedal-
assist mode and you may be unprepared for the sudden increase in speed.
However, after a few times, you will enjoy using the pedal-assisted function.
- 4 -
Assembling Your New e-Bike
If you purchased your e-bike unassembled, please follow these instructions to
assemble your e-bike under the guidance of an adult or a qualified technician.
Assembly is quite easy as most of the parts are already assembled; you need only to
put a few large pieces together to complete the job.
You may click to the following link to view the demonstration of assembling the e-Bike:
Install the front wheel: https://www.youtube.com/watch?v=oKeM2qvoemU&t=51s;
Adjust the brake if needed: https://www.youtube.com/watch?v=4R98ThIoKg4&t=4s;
Remarks: The link is subject to change without advance notice. For more information,
please refer to this website: www.engwe-bikes.com.
Name of each Part
- 5 -
Check that the Package is Complete and Undamaged
Your e-bike comes in a carton containing the following:
The main body of the e-bike –consisting of the frame, the rear wheel, the
gear and chain, the rear brake, the battery and the rear fender.
The handlebar subassembly with the battery’s keys and the remote controls
attached on it –the handlebar subassembly is not really separate, as it is
connected to the main body by the brake cables and electrical wires. The
handlebar also has the brake levers and gear control already assembled.
Additionally, the right handle also has a control for the throttle mode, a
battery charge level indicator and the ignition lock.
The Seat –the seat is attached to its pedestal stem.
The front wheel
The front wheel fender with supports
Front light –the front light is not really separate, as it is connected to the
main body by an electrical wire.
Other parts –One charger, a pair of foot pedals and this manual, they are
contained in a separate box.
- 6 -
Assembly - Step 1: Attach the handlebar subassembly
Stand the main body of the e-bike on the kickstand. Stand up and lock the steering
column that is at the front of the main body frame, insert the stem of the handlebar
subassembly into it. Make sure that the fork (that will hold the front wheel) is
pointing forward, and orient the handlebar accordingly. Insert the stem all the way
and tighten from the top using the quick lock.
Assembly - Step 2: Attach the Front Wheel Fender and the Front Light
Make sure that the fork from the steering column is pointing forward. Place the
front light and the front fender within the fork: locate the small projection with a
screw hole at the top of the fender, fit it to the bolt at the back of the base of the
steering column; attach the supports (one on each side) to the base of the fork
using two small bolts (supplied). After all three points (the dorsal point and the 2
support points) are properly attached, use the multi-wrench to tighten.
- 7 -
Assembly - Step 3: Attach the Front Wheel and Adjusting the Front Brake
Make sure that the fork from the steering column is pointing forward. Remove the
protective bar from the front fork, place the front wheel within the fork and the brake
disc within the brake block, seat the axial stem properly within the receptacles at
the tips of the fork, and tighten the nuts with the multi-wrench. Make sure that the
front wheel moves freely and does not wobble from side to side. Reposition the
wheel and re-tighten if necessary.
Test the brake by lifting the front of the e-bike and setting the wheel in motion
(turn it) and apply the brake at the handlebar to stop it. If you could not set the
wheel in free motion, or if you could not stop it by applying the brake, you need to
re-adjust by increasing or decreasing the clearance.
Caution: Do not operate the e-bike until you are satisfied that both the front and
rear brakes are operational.
Assembly - Step 4: Installing the Seat and Pedals
Insert the pedestal stem of the seat into the seat column of the main body frame,
use the built-in lever to tighten.
Attach a pedal on each side of the crank, tighten with the multi-wrench.
Inflate the tires to proper pressure.
At this point, your e-bike is a completely functional bicycle, although without any
battery operated to function as yet. Check all tightening points to make sure. Take a
short ride. Adjust the height of the handlebar, and the height and the tilt of the seat,
if necessary, for maximum comfort.
- 8 -
Assembly - Step 5: Charging the Battery
Remove the charger from the box, attached the power cord and insert that to any
wall outlet. Insert the plug at the end of the smaller cable into the charging terminal
of the battery and start charging. The charging terminal is on the side of the battery
opposite to a hole on the side of the frame. The LED on the charger glows RED
while charging and glows GREEN when charging is complete. The battery should
be turned OFF while being charged. When the LED on the charger turns Green,
disconnect the charging cord and cover the charging terminal with the rubber cap.
The battery has a series of LEDs as charge level indicators. There is a similar
series of LEDs on the handlebar. If a battery is installed on the e-bike and turned
ON, the LED indicators will show the charge level of the battery.
You are now ready to start using your e-bike.
- 9 -
Operating Your New e-Bike
Your e-bike is driven by a motor embedded in the hub of the rear wheel. The motor is
powered by a battery. The amount of power delivered to the motor, and hence the
accelerating force on the e-bike, is controlled by you in a way according to the power-
assisted mode you choose.
You can configure the e-bike to operate in the pedal-assist-only-mode or the full power
mode (should check against local laws to ensure full power mode is permitted) where
you can also use the hand throttle to deliver power to the motor.
Handlebar’s Functions
You can charge your phone with the USB charging port.
Your First Ride
(Reprinted from the Safety and Compliance with the Law section)
Please be VERY CAREFUL when you are ready to get on your e-bike for the first
time because the e-bike moves significantly faster than a regular bicycle at active
power-assisted mode. Take your e-bike to an area with a lot of open space before
you start. Do not start pedaling hard as soon as you get on the e-bike (as you
normally would do with a regular bicycle), as the e-bike will accelerate under pedal-
assist mode and you may be unprepared for the sudden increase in speed.
However, after a few times, you will enjoy using the pedal-assisted function.
- 10 -
Pedal-Assisted
You must turn on the ignition lock to use the e-bike in pedal-assisted mode.
In the pedal-assisted mode, power assist is triggered when you pedal forward, and
power assist stops when you stop pedaling. In other words, power assist happens
as long as you pedal. You don't need to pedal hard. All you need is to apply a light
force to the pedals continuously to maintain the current flow. When you apply one
of the brakes, power assist will automatically stop, allowing the e-bike to slow down
and stop. Power assist will turn itself off when the e-bike has reached the maximum
speed of 15 mph.
Hand Throttle Control
In the hand throttle mode, amount of power assist is determined by the throttle
switch controlled by your right hand. You control the throttle by twisting it from its
resting position, the farther the throttle switch is from its resting position, the more
power is delivered to the motor to accelerate the e-bike. When you want to slow
down, you simply release the throttle and let it return to its resting position, and
simultaneously apply the brakes if necessary.
You do not need to pedal the e-bike if you use the hand throttle. However, you
can pedal while commanding power assist. If you do pedal to help the
movement, you conserve energy and the charge in the battery will last longer.
Cruise Control
You can trigger this function when you hold twisting the throttle bar for 10 seconds,
and you can call off it with pressing the brake bar or twist the throttle bar.
Charging Your e-Bike Battery
Your e-bike battery is a lithium-ion battery. Lithium-ion battery requires specially
designed chargers. You should never charge your battery with a substitute
charger that is not designed for this use. Use of an unsuitable charger to charge a
lithium-ion battery will result in overheating, fire or even explosion. If your charger
is lost or damaged, contact your dealer to order a replacement.
Charge your battery while the e-bike is not in use. You should turn off the ignition
lock before you charge it.
Do not place either the charger or the battery near flammable substances while
charging is taking place. Charging should not be done in the vicinity of infants and
small children. It is also prudent to remove valuable objects from the immediate
vicinity of the battery while it is being charged.
The length of charging time depends on the level of charge the battery still holds. If
a battery is completely discharged, it will take 6 hours to be fully recharged. When
a battery is fully charged, the LED on the charger will transition from RED to
GREEN. At this point, you should disconnect the charger. Do not leave the charger
connected to the battery for a very long period of time after charging is complete.
(Leaving it connected for an overnight charging is OK.)
It is normal for the charger and the battery to be slightly hot while charging is on-going.
- 11 -
Maximizing the Riding Range
Many factors affect the rate of use of the electrical energy and the riding range.
You should fully charge the battery before a long journey.
Rough road conditions and hilly terrain will consume more energy.
Frequent change of speed will consume more energy.
Carrying more weight on the e-bike will consume more energy.
Keeping the tires properly inflated and keeping the e-bike clean and
well lubricated will save energy.
Making sure that both wheels move freely when brakes are not applied will
save energy. You should check brake adjustments frequently.
Pedaling as you ride will consume less electrical energy and increase the
riding range.
When the ignition lock is turned off, your e-bike functions as a regular bicycle.
If you embark on a very long journey, you might want to turn off the battery
for long stretches where the road is level or downhill and pedal the e-bike as
a regular bicycle so that you can conserve electrical energy stored in the
battery.
- 12 -
Care and Maintenance for Your New e-Bike
You should, in general, take care of your e-bike the way you would with a regular
bicycle by keeping it dry, clean and the moving parts well lubricated. You should also
avoid parking your e-bike in exposed areas whenever possible.
You should check the effectiveness of the brakes before each use.
For your e-Bike, you should also take note of the following:
Your e-bike is designed for regular country road use for a single person.
Using your e-bike for extreme maneuvers, such as extreme off-road use,
jumping, or carrying the excessive load will damage the e-bike and could
cause serious injury.
Do not use high-pressure water streams to clean your e-bike, as water
might seep inside the motor or the wiring compartment and cause rusting of
electrical parts or short circuits.
Avoid parking your e-bike outside when there is rain or snow. At the end of
a trip where there was rain or snow, bring the e-bike inside and use a clean,
dry towel to eliminate any wetness.
Be sure you do not lose both keys. If you lost one key, you should
immediately make a copy as a back-up. If you lost both keys, you will be
unable to turn on the e-bike.
Special Care for the Battery and the Charger
Use only the supplied charger to charge your battery. Do not use an
unauthorized substitute. If your charger is lost or damaged, contact your
dealer to order a replacement.
Do not open or alter the battery or the battery charger.
Do not place the battery near fire or corrosive substances. Do not immerse
in water or other liquids.
Avoid subjecting the battery from high temperatures, such as directly under
the hot sun, for prolonged periods of time.
Do not connect (short circuit) the two poles of the battery.
After much use, your battery's charge holding capacity will decrease. If you
find that your battery does not hold sufficient charge even for short trips, you
should contact your dealer to order a replacement. Under normal use, the
battery will undergo 1000 charging and discharging cycles.
If the battery will not be used for an extended period of time, charge it fully
and recharge it every 3 months. Store it in a cool place.
Your e-bike battery is engineered with precision for high capacity and
long useful life. We do not recommend that you use it to power other
electrical devices. Improper use of the battery will damage the battery
and shorten its useful life and may cause a fire or an explosion.
-13 -
Specifications
Frame Construction: Steel
Wheelbase: 980mm
Tire Model: 14" (355.6mm)
Climb Grade: 7 degree
Max load: 150kg (330 lb)
Speed: 24km/h (15mp/h)
Power: 250W
Battery Capacity: 8Ah
Battery Charger Input Voltage: 110/220 volt AC
Battery Operational Temperature: 0°to 40°Celsius (32°to 104°Fahrenheit)
Battery Life: Approximately 1000 complete charge/discharge cycles
The following assumes an 80kg (176 lb) load (rider weight + any carry-on weight)
on a level road:
Maximum Riding Range in Pedal Assist Mode: 40km (24 miles)
Maximum Riding Range in Hand Throttle Mode: 24km (15 miles)
- 14 -
Safety
These safety precautions are provided for your benefit to protect you and those
around you. Please read and follow them carefully to avoid unnecessary injury,
damage to the product, or damage to other property.
Battery
Battery Charger
- 15 -
- 16 -
Trouble Shooting
Failure Phenomena
Causes of Failure
Solutions
Can not adjust the
speed
Speed is less than
10km/h
Battery’s voltage is too
low
Throttle governing bar is
damaged
Poor contact of the
controlling line
Spring failure or being
locked
Fully charge the battery
Replace the throttle
governing bar
Replace the spring
e-Bike’s mileage is
obviously inadequate
after fully charged
Inadequate tire pressure
Failure of charger
The battery cannot be
fully charged
Failure of controller
Battery aging or battery
damaged
e-Bike has not been well
assembled
Too much upgrade road
Strong wind
Bad road
Overweight
Too many braking times
Temperature is too low
Inflate tire with
appropriate air pressure
Repair the charger
Examine and repair the
controller
Replace the controller
Replace the battery
Re-adjust the e-Bike
Boost the e-Bike by
manpower
Warm the battery above
0℃(32℉)
Wheel hub stop running
after switching on the
power
The connection of
battery is loosen
Poor contact of
controlling line
The connection of wheel
hub
is loose or damaged
The protective board of
the battery is broken
Re-connect the battery
Replace the connection
line
Replace the battery’s
protective board with a
new one
Can not turn on the e-
bike
The Battery is out of
power
Battery damaged
Fully charge the battery
Replace the battery
As one or more causes of failure might lead to the failure phenomenon, you should find
out the true cause(s) and then take the appropriate solution(s) to rectify the problem. In
case of doubt, please consult a qualified technician for service, repairs or maintenance.
- 17 –
Company: Shenzhen Big Fish Sports Technology Co., Ltd
Address: Room 207, Jiangnan Building, Yongxiang Rd, Bantian St, Longgang Dist,
Shenzhen, Guangdong, China
Post Code: 518129
Email: service@engwe-bikes.com
Tel: +1 919 607 2472(US)
+86 186 6593 3594(CN)
The manufacturer reserves the right to change the features of the product without prior notice.
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