Junction Powertrail Operator's manual

Powertrail Power Assisted Bicycle –User Instruction Manual
For assistance or questions regarding this product, please call our customer service at 1-800-268-6407

1
Contents
Welcome word ............................................................................2
Safety Information.......................................................................2
Quick Start Instructions...............................................................4
System component presentation ................................................6
Component features ...................................................................8
Components technical specs .......................................................8
Operating Range..........................................................................9
Using your power assisted bicycle.............................................10
General handling instructions ...............................................10
Turning the system on...........................................................11
Turning the system off...........................................................11
Removing or inserting the battery.........................................12
Specific riding maneuvers......................................................13
Choosing a power assistance mode ......................................13
Power assist level and modes ...............................................13
Charging the battery .............................................................15
Battery capacity level indicator.............................................15
Using the LCD controller............................................................16
Positioning the LCD controller...............................................16
LCD controller buttons description .......................................16
LCD screen icons description.................................................16
LCD controller commands .....................................................16
Adjusting the system parameters .........................................18
Maintenance & storage.............................................................19
Minimum battery care ..........................................................19
Washing your power assisted bicycle....................................19
Disposal .................................................................................19
Storing your power assisted bike ..........................................20
Troubleshooting ........................................................................20
System malfunction sign and error codes.............................20
Troubleshooting guide ..........................................................21

2
Welcome word
Congratulations on buying a power
assisted bicycle! Whether it is to make
your daily commute to work easier,
extend your riding time, help you keep up
with your friends or family or simply to
enjoy all the comfort, efficiency and fun
that this type of bicycle allows, we are
confident that you will appreciate all the
features and benefits your new bicycle
has to offer.
Safety Information
Although modern power assisted bicycles
look a lot like their regular counterparts,
there is quite a lot of technology behind it
and some notable differences in their
riding behavior, handling, and
maintenance requirements.
This manual has been created to provide
you with the instructions needed to safely
handle and operate your power assisted
bicycle, understand its function and
maintenance.
It is important that you carefully read and
understand this manual before you ride
your power assisted bicycle. It should also
be kept handy for future reference.
This document is not a complete service
manual. We recommend that you seek
advice from a qualified technician if
anything is unclear.
Note that some manufacturers may not
honour their warranty if the handling and
operation has not been done properly.
The following symbols will be used
throughout the manual. They represent
important Warnings and Cautions about
the proper handling and operation of your
power assisted bicycle. They should be
carefully observed because failure to do
so might result in serious injuries, damage
or loss of performance of the system.
For other information not related to the
power assist system but regarding your
bicycle such as part assembly,
adjustments, maintenance, or riding
basics, please refer to your Owner Manual
provided separately at the time of
purchase.
Indicates important
information or a caution
about the proper use of a
component of the system.
Indicates a warning about
important safety information.

3
Always use your power assisted
bicycle according to the local laws
and regulations.
Don’t attempt to alter or
disassemble any component of
the power assist system.
Maintenance should only be performed by a
qualified technician.
Only use the original equipment
provided to operate and charge
the system. For replacement
parts, contact the bicycle dealer where the
product was purchased.
A power assisted bicycle handles
differently than a regular, human
powered bicycle. The acceleration
can be surprisingly effective, and you should
get familiar with its behavior progressively
before riding on public roads or crowded
bicycle-designated paths.
Power assisted bicycles are
heavier than most other bicycles.
Always keep in mind that the
required distance needed for braking may
be longer than what you are used to on a
regular bicycle. This also calls for more
attention to the maintenance of your brake
system and tires.
Always look far in front of you
while riding to make sure you
have enough time to react if any
situation occurs. Avoid looking at the LCD
controller unit for a long period. Instead,
learn how to operate it with only a quick
glance.
A power assisted bicycle is not
suited for use by children or
certain persons with reduced
physical or mental capabilities. Make sure
you know and understand local laws and
regulations regarding this type of vehicle.
Laws and regulations regarding
the limitations and use of a power
assisted bicycle varies among
countries and even sometimes among states
and provinces. Make sure you know and
understand local laws and regulations if you
plan to travel with your power assisted
bicycle.
Important information about battery storage
Do not expose your power
assisted bike to extreme cold
environments, even for a short
period. Cold temperatures can damage the
battery.
Store your bike away from high
heat sources such as direct
sunlight or inside a vehicle during
summer.
Make sure to follow all the
instructions described in section
Storing a power assisted bicycle
when storing the bike for a long period.

4
Quick Start Instructions
STEP 1: Charge the battery
1. Connect the AC power plug into the charger.
2. Plug the AC power plug into an electrical outlet. The LED indicator on
the charger will light up.
3. Lift the battery’s plastic protector cap and connect the charging plug
into the battery’s charging port. The LED indicators on the battery will
light up, confirming that charging is underway. Let the battery charge
until it is fully charged.
4. The light on the charger will turn green when fully charged.
5. Pull the charging plug from the battery’s charging port and replace
the plastic protector cap.
STEP 2: Turn the system on
1. Slide and lock the battery onto its support on the frame.
- Mount the bicycle and stand still over it or sit on the saddle with a foot
resting steady on the ground -
2. Press the power button on the battery. The LED indicator will light
up showing the battery is On.
3. Press and hold the button on the LCD Controller until it the screen
lights up.
It is strongly recommended not to turn the power assist system on
before having mounted the bicycle and being seated properly with at
least one foot on the ground. An unexpected ignition of the power
assistance while mounting the bicycle can result in serious injuries.

5
STEP 3: Select your assistance level
1. Press the button on the LCD Controller to switch to a higher
power assistance mode.
2. Press the button on the LCD Controller to switch to a lower
power assistance mode.
Note: Level 1 provides the least power assistance, while level 5 provides the
most.
Be careful if you chose to start off with a high power assistance mode
as the first pedal stroke may result in an unexpectedly quick
acceleration!
STEP 4: Start off
1. Make sure the path in front of you is clear.
2. Hold on to the handlebar with both hands and push on the pedals.
The power assist will quickly kick in!
Note: The power assist will only stay engaged when the rider is pedaling.
Ride safely!

6
System component presentation
Charger unit
1. Charger block
2. AC Power cord
3. LED Indicator
4. Charging plug
*Charger may not be exactly as shown
Battery unit
1. Battery casing
6. Key lock
2. Power button switch
7. Key
3. Charge level LED indicators
8. Battery support base
4. Charging socket
9. Power cord
5. USB auxiliary port
10. Coupler
The battery unit has been built and sealed by the manufacturer.
Do not attempt to open the battery casing for any reason. Only
the original equipment manufacturer is allowed to perform
maintenance or repair on the battery.

7
Motor unit
1. Rear hub motor shell
2. Power cord junction cap
3. Power cord coupler
4. Battery casing
LCD Controller unit
1. Up Button
2. Power Button
3. Down Button
4. LCD Screen
5. Handlebar bracket

8
Component features
Charger unit
▪Converts input electrical current from
wall outlet to charge the battery.
▪Red LED light while charging battery.
▪Green LED light once battery is charged.
Battery unit
▪Stores energy to power the motor unit.
▪Lithium-ion Type
▪Charging port
▪USB port to charge devices
▪Key lock to secure on the bicycle’s frame
Motor unit
▪Provides power assistance to the
bicycle’s drivetrain
▪Gear drive rear hub motor type
LCD controller unit
▪Built-In LCD screen
▪On / Off control for the system
▪Power assistance mode control
▪Displays information such as:
▪Current speed
▪Average speed
▪Maximum speed
▪Current power assist mode
▪Motor power output
▪Battery level
▪Riding time
▪Trip distance
▪Malfunction error code
▪Auto Off function
Sensor unit
▪Built-in Sensor unit
▪Detects pedalling
▪Measures speed
Components technical specs
Battery
▪Voltage: 36V
▪Capacity: 10.4 Ah
▪Energy content: 375 Wh
▪Operating temperature
▪Discharge: -10 to 40°C
▪Charging: 0 to 40°C
▪Storage temperature: 5 to 40°C
Motor unit
▪Power: 250 W
▪Assistance cut-off speed: 25 km/h*
*Power assistance cut-off speed may be different
depending on the country where the bike is
distributed.

9
Operating Range
The distance you will be able to ride with
a single battery charge depends on many
factors. Some are under your control and
some are not. The factors you have no
control on are weather conditions such as
wind direction, wind strength, and
temperature. Difficult road surfaces also
influence the range you can achieve.
Loose and irregular ground surfaces will
increase your tires rolling resistance and
therefore require more power and
decrease the range you can cover.
The factors you have control over are the
following:
▪The power assistance level you choose
▪Tires pressure and condition
▪The weight of cargo you are carrying
▪Condition of the battery
Here are some tips to help you reach
maximum range of a battery charge:
▪Only use the power assistance you need
for each condition during your ride. (You
may not need maximum assistance
while riding on flat ground or with a tail
wind).
▪After a stop, start off again on an easy
gear combination and shift up
progressively as you gain speed. (Think
of it as driving a car with a manual
transmission where you would not start
accelerating in a high gear).
▪Keep your tires inflated at the
recommended pressure. (This will
significantly reduce the rolling
resistance of your tires and require less
power to propel the bicycle).
▪Only bring the necessary equipment to
keep your overall weight as low as
possible.
▪Always charge your battery according to
the instructions described in section
Charging the battery of this manual to
extend its life and performance.
It is recommended that you plan your
ride to make sure you can make it back
home on a single charge or have a
charging stop planned in advance.

10
Using your power assisted bicycle
General handling instructions
Disconnect the power cord coupler
next to the hub motor before
proceeding to mechanical
adjustments, maintenance or before
shipping your bicycle with a transport
company.
Disconnect and remove the LCD
Controller unit when packing the
bicycle for travelling to prevent
damage to these components.
Power assisted bicycles are
considerably heavier than regular
bicycles, therefore you should take
extra caution before lifting your bicycle and use a
proper lifting technique in order to not hurt your
back.
If you are using a bicycle rack to
transport your power assisted bicycle
on your vehicle, make sure it can
support the bicycle’s weight.
Do not move your bicycle while the
battery is connected and charging to
prevent damage to the power cord
and connections.
Your bicycle’s ‘’Walk’’ mode is
designed to help you push your bicycle
uphill. See section ’Power assist mode
description’ to learn how to use this function.
Always advise shipping companies
that you are shipping dangerous
goods and follow their requirements
for packaging or ask your bicycle dealer on
recommendations regarding the packaging of
your battery for transport.
Never submerge the bike in water and
avoid washing it with a high-pressure
washer. Although it has been designed
to be water resistant, the battery’s shell is not fully
sealed.
Never attempt to modify or
disassemble the battery. This could
lead to serious injuries, cause serious
damage and will void the manufacturer’s
warranty. Only a qualified technician should
perform repair or maintenance on any parts of the
power assist system.
Only use genuine parts provided by the
manufacturer to charge the battery
and always follow the charging
instructions and warnings.
Do not place the bike near heat sources
or throw in fire.
To prevent battery leakage, do not
leave your bike under direct sunlight
for prolonged periods or inside a
vehicle on a hot day.
If a battery has suffered a strong
impact it may be damaged. You should
have it checked by a qualified dealer to
make sure it is safe to use before riding
your power assisted bicycle again.
Always respect the battery’s operating
temperature limits described in section
Components Technical Specs.
If the battery starts leaking, stop using
it immediately and contact a qualified
dealer for instructions.

11
If a leakage from the battery occurs,
avoid touching it as it is corrosive. If
the liquid gets in contact with your
clothes, wash them with clean water. If it gets in
contact with your eyes, do not rub but wash
thoroughly under clean water and contact a
physician.
When charging your battery, make
sure the connectors are clean and free
of water or dirt before connecting the
charger.
The warning labels on the battery and
charger present important
information for your safety. Make sure
to follow the instructions carefully.
Turning the system on
Do not turn the power assist system
On before standing over the bike or
being seated properly with at least one
foot on the ground. An unexpected ignition of the
power assistance while getting on the bike can
result in serious injuries.
This power assist system has an auto
shut off function. If there is no
operation or input from the LCD
controller for some time, it will shut down
automatically.
To turn the power assist system On:
1. First turn the battery power On
Press and hold the Power button on the
battery casing. LED indicator will light up
confirming the battery is On.
2. Then turn the LCD Controller On
Press and hold the LCD controller’s power
button for 2 seconds. The LCD screen
will light up.
In the event that an error logo shows
up when the LCD screen lights up do
not ride your bicycle. Contact a
qualified dealer to have your power assist system
checked.
Turning the system off
Do not get off the bike before having
turned the power assist system Off. An
unexpected ignition of the power
assistance while getting off the bike
can result in serious injuries.
To turn the power assist system Off:
Press and hold the Power button on the
battery casing. The button’s LED indicator
will turn off. The motor and LCD controller
won’t receive power anymore. LCD screen
will quickly shut down. The power assist
system is then Off.

12
Removing or inserting the battery
To remove the battery:
▪Insert the key into the key lock of the
battery.
▪Turn the key for half a turn, counter
clockwise (to the left) to unlock the
battery.
▪Firmly push the battery along the
battery holder bracket towards the
front, being careful not to hit the bicycle
frame.
To Insert the battery:
▪Insert the key into the key lock of the
battery.
▪Turn the key for half a turn, counter
clockwise (to the left) to unlock the
battery.
▪Check the battery holder bracket to
ensure there isn’t any water
accumulation, then align and firmly
push the battery along the battery
holder bracket towards the rear.
▪Turn the key for half a turn, clockwise
(to the right) to lock the battery in
position.
Your key is needed to remove the
battery to prevent it from
unintentional detachment or from
theft.
Put the provided key double in a safe
place for the event that you lost the
first key.

13
Specific riding maneuvers
There are some maneuvers that should be
avoided when riding a power assisted
bicycle. A sudden, ignition of the power
assist system in an unexpected situation
can cause the bicycle to accelerate when
it is not required and handle erratically.
In the following riding situations, it is
recommended not to put pressure on the
pedals to avoid a sudden acceleration
from the power assist system:
▪While walking besides the bicycle.
▪While taking a curve at high speed.
▪While riding on a patch of water, mud,
snow, ice, or any slippery surface.
▪While lifting the front wheel up to clear
an obstacle.
Choosing a power assistance mode
Once the system is powered up, you may
want to choose your power assistance
level. This will change the amount of
power assistance that the motor provides
you while pedalling.
It is recommended to start off with the
lowest level of assistance and increase it
gradually if needed. Doing so will offer a
much smoother acceleration, helping you
to keep control over your speed as well as
to save the battery’s capacity.
Keep the assistance level lower while
riding casually on flat surfaces. Increase
the assistance level when approaching an
incline to help you climb with less effort.
If you wish to walk beside the bicycle on
an incline or if the bicycle is heavy to push
because of the load it is carrying, you may
want to use the Walk mode that will make
the bicycle self propel at a speed of 6
Km/h.
Power assist level and modes
Your power assist system can be used at
many levels and on different modes. Get
to know each of the options available so
you can choose the right one for each
riding situation.
The LCD screen unit shows which power
assist level or mode you’re currently in.
Use a power assist level according to the
current riding conditions. Choose a high
assistance level when going uphill or
against a head wind and switch to a lower
assistance level if you are riding on a flat
road or with a tail wind.
To shift through power assist levels:
Switch through the 6 power assist levels
(0 > 1 > 2 > 3 > 4 > 5) using the LCD
controller’s and buttons.

14
Level 0 –No assistance
At this level, there will be no power
assistance coming from the motor. Use
this level to save battery capacity while
descending.
Level 1 –Minimum assistance
Compensates for the power assist
system’s own weight without reaching
high speed. Use on flat surface with low
wind resistance. Operating range is at its
highest.
Mode 2 –Low assistance
Helps to reach a steady, slightly higher
speed than normal. Use on flat surface
with low to medium wind resistance. High
operating range.
Level 3 –Intermediate assistance
Maintains a steady speed on variable
incline surfaces with medium wind
resistance. Optimal balance between
power assistance and operating range.
Level 4 –High assistance
Reach greater speeds. Use on long inclines
and against strong wind resistance. Expect
a reduced operating range if riding with
this assistance level for a long period.
Level 5 –Maximum assistance
Reach the highest speeds or get maximum
help to climb steeper inclines. Keep a
close watch at your battery capacity if
using this mode for a long trip.
Walk Mode
Use Walk Mode when walking beside your
bicycle and you’re in need of power
assistance. For example, when walking
your bike up on an incline or carrying a
heavy luggage. As soon as Walk mode is
activated, the motor will propel the bike
at a steady speed of 6 Km/h until the
button is released.
To activate Walk mode:
Press and hold Down button for 2
seconds (from any mode). Walk mode will
instantly shut down once you release the
button.
Switching to Walk mode will instantly
ignite the motor and propel the bicycle
to a steady speed of 6 km/h. Before
activating Walk mode, make sure you are properly
holding on to your handlebar and that the path in
front of you is clear. For safety reasons, the Walk
mode will automatically shut down once the
button is released.

15
The operating range (battery
autonomy) of your bicycle is
significantly influenced by the
power assistance level you choose and
how you manage it during your ride. For
more details on how to extend your ride
time, refer to the section Operating
Range.
Charging the battery
It is recommended to take the battery
off its support base and to place it in a
room at a tempered temperature and
humidity before proceeding to the
charge.
It is possible to charge the battery
while its on the bike but in this
situation, you should make sure the
bike is resting in a stable position so it
can’t move or fall during the charging
process or
If the battery is not fully charged after
7 hours, unplug the battery and
contact a qualified dealer to have the
battery checked.
A battery will wear out with age.
Following the best charging and
storing practices will help preserve its
life span to a maximum. However,
when an abnormally short battery
capacity after a full charge is noticed, it
is likely that it needs to be replaced.
To charge the battery:
▪Connect the AC power plug into the
charger block.
▪Plug the AC power plug into an electrical
outlet. Check that the LED indicator on
the charger lights up to confirm that
power is going through.
▪Lift the rubber protector and connect
the charging plug into the socket on the
battery.
▪Check that the LED indicators on the
battery lights up to confirm that
charging is underway.
▪Let the battery charge until it is fully
charged.
▪Pull the charging plug from the charging
port and replace the rubber protector
cap.
Battery capacity level indicator
▪Capacity 70% or more
▪Capacity less than 15%
▪Voltage shortage –
shutting down

16
Using the LCD controller
Positioning the LCD controller
Position the LCD controller on the left-
hand side of your handlebar, facing up,
slightly at angle so it’s easy to look at, and
close to your hand so you can easily reach
it while holding on to the grip.
LCD controller buttons description
1. UP button
2. POWER button
3. DOWN button
LCD screen icons description
1. Battery charge level status
2. LCD screen backlight status
3. Time display
4. Current time / Trip time displayed
5. Average speed / Maximum speed displayed
6. Walk mode activated icon
7. Current speed unit displayed
8. Current distance unit displayed
9. Distance display
10. Current trip distance / Odometer displayed
11. System voltage status
12. Speed display
13. Current power assist level
LCD controller commands
Turning the system ON or OFF:
Press and hold the Power button for 2
seconds to turn the system On or Off
(The battery power must have been
turned on before)
Switch to a higher Power Assist level:
Press the Up button to switch to a
higher Power Assist level
Switch to a lower Power Assist level:
Press the Down button to switch to a
lower Power Assist level
Activate Walk mode:
Press and hold the Down button for 2
seconds from any level to activate Walk
mode. Maintain the button pressed for
the time you need the Walk assistance.
Walk mode will instantly shut down once
you release the button.
Switching to Walk mode will instantly
ignite the motor and propel the bicycle
to a steady speed of 6 km/h even with
no pressure on the pedals. Make sure
you are holding your bicycle steadily and that the
path in front of your bicycle is clear. Walk mode
will automatically shut down once you release the
button.

17
Switch to a different LCD screen mode:
Press the Power button briefly to switch
between different LCD screen modes (1 >
2 > 3) displaying information about your
speed, travelled distance and power assist
system status.
LCD screen Mode 1 (default) displays:
▪Battery charge level
▪Current power assist level
▪Current speed
▪Current trip timer
▪Current trip distance
LCD screen Mode 2 displays:
▪Battery charge level
▪Current power assist level
▪Average speed
▪Total trip timer
▪Odometer
LCD screen Mode 3 displays:
▪Battery charge level
▪Current power assist level
▪Maximum speed
▪Current system voltage
Reset the latest trip data:
(Wait at least 5 seconds after the LCD
controller has been turned On)
Press and hold both the Up and Down
buttons for 2 seconds until the current trip
timer and trip distance values are flicking.
Then, while they are still flicking, briefly
press the Power button to reset the
values to zero.
Turn the LCD screen backlight On / Off:
With the LCD controller On, Press and
hold the Up button for 2 seconds until
the backlight is lit.
Press and hold the Up button for 2
seconds again to turn it Off.

18
Adjusting the system parameters
To access Parameters Adjustment Menu:
(Within 5 seconds after turning the LCD
controller On)
Press and hold both the Up and Down
buttons for 2 seconds to access the first
parameter menu: Maximum speed
1. Maximum speed
This is the system’s cut-off speed limit.
When this speed value is reached when
riding, the motor will stop providing
power assistance.
The maximum speed value has been
set at the factory according to the
Country, State or Province your bike
has been distributed.
Press the Power button to proceed to
the next parameter (Wheel diameter)
2. Wheel diameter
The wheel diameter value has been set
at the factory according to your bike’s
specific configuration. Do not modify
the default value of this parameter. Proceed to the
next parameter.
Press the Power button to proceed to
the next parameter (Speed/Distance unit)
3. Speed / Distance unit
The unit used to measure and display
speed and distance on the LCD screen can
be adjusted to the user’s preference in
between Metric (KM/H –KM) and
Imperial (MPH –Mil) standards.
To set the speed / distance unit:
Use the Up or Down button to set the
desired value while it is flicking.
Press and hold the Power button for 2
seconds to exit the Parameters
Adjustment Menu.
Parameters adjustment mode quits
automatically when there is no input
given to the controller for 1 minute.

19
Maintenance & storage
Besides your bicycle’s regular mechanical
maintenance, for which the requirements
are well described in the generic bike user
manual that was provided with your
bicycle at the moment of purchase, and
the minimum battery care described in
this section, there is no specific
maintenance related to the Power assist
system required by the user. Do not
attempt to open any of the Power assist
system components.
Always remove the battery before
proceeding to regular bicycle
inspection, maintenance, or repair so
there is no risk of injury from an
electrical shock or sudden motor
ignition.
Servicing, maintenance or repairs must
be carried out only by a qualified
technician.
Minimum battery care
As for every battery powered product, it is
good to discharge and charge the battery
at regular intervals. When possible, run
down the battery capacity completely
before putting it to a complete charge.
It is normal for a battery to heat up under
normal use. It is recommended to let it
cool down before putting it to charge.
Do not expose your bike to extreme heat
(more than 40C) or cold (less than -10C)
Never leave the charger cord connected
to the battery’s charging port for a
prolonged period. It should be
disconnected after a complete charge
period, or at least after a maximum of 24
hours.
Make sure to follow the instructions and
to respect the minimum charge periods
described in the section Storing your
power assisted bike when storing your
bike for a prolonged period such as the
off season.
Washing your power assisted bicycle
The bicycle user manual that was
provided to you separately contains a
more detailed bicycle washing
procedure and recommendations. It is
suggested to refer to it.
Never submerge any of the components
of the Power assist system in water.
Always wait for the battery to cool down
before washing your bike. A sudden
change of temperature can damage your
battery.
Wash your bicycle with water and mild
soap. Do not use a high-pressure washer
to prevent water from making its way
inside the sealed components. Make sure
that the plastic protector cap is closed on
the battery charging port.
Keep the battery port and power cord
coupler’s contact prongs and holders
clean. Use a damp cloth to remove grit,
dust, mud, etc.
Disposal
Check with your local waste management
services for the proper way to dispose of
the components of the Power assist
system. Do not dispose of electronical or
battery components with other
household waste.