A2b | Octave | Owner`s manual | a2b Octave Owner`s manual

Owner’s Manual
owner's manual
1.0 Introduction
.0 Important Information
.0 Your A2B
4.0 Unpacking and adjustment
.0 Understand your A2B
6.0 Battery use, storage and disposal
7.0 Important Pre-ride Safety Information
8 .0 Maintenance 9.0 Cleaning
10.0 Trouble Shooting
11.0 Technical Information
12.0 Warranty & Security Details
Owner registration
1.0 Introduction
Welcome and congratulations on buying your new A2B Octave*, the electric bike that’s taking transport in a whole new direction.
Your bike will give you the freedom to go your own way.
It’s the revolutionary way to get to work, pop to the shops or just get some fresh air.
Compared to jumping in the car, it’s a lot more fun, easier to park and will reduce your fuel costs as
well as your impact on the environment... as you’ll soon find out!
Hero Eco
Hero Eco Ltd
80 Coleman Street
London EC2R 5BJ
*’ A2B Octave is termed as’A2B throughout the rest of this manual.
owner's manual
2.0 Important information
This owner manual contains important safety, performance and service information.
Please ensure you read this thoroughly before your first ride.
Your A2B should be fully assembled and the battery charged by your A2B dealer at the time of delivery.
If not contact us immediately as this will void your warranty.
Please ensure that all users of your A2B read and understand the following important information.
• The A2B is designed for public road use. Don‘t ride off-road,
in water and don‘t use the A2B to jump in bumby terrain or
for competition events.
• We recommend that you always wear an approved
cycle helmet at all times and light or fluorescent
clothing at night when riding the A2B.
• Make sure you know and practice the rules of safe and
responsible riding. There is always a risk of serious / fatal
injury or damage as a result of an accident while riding
an A2B. By choosing to ride the A2B you assume
responsibility for that risk.
• Your existing insurance policies may not provide
accident cover for your A2B. Contact your insurance
company or agent for information.
• This owner’s manual makes no representation about the
safe use of the A2B under all conditions.
Important symbols
This indicates a potentially hazardous situation which, if not avoided, could result in a serious injury,
property damage or damage to equipment or inadvertent system failure.
Provides helpful or other important related information.
3.0 Your A2B
3.1 Components
*NOTE: When we refer to the 'right side' and the 'left side' of the A2B. For clarification, 'left' and 'right' are
relative to your position when sitting on the A2B in the normal riding position.
owner's manual
Saddle (seat)
Seat post
Seat post clamp
Key switch
Rear view mirror
Head light
Front mud guard
Front wheel/tire
Front disk brake and rotor
Crank arm and chain ring
Chain tensioner
Drive chain
Rear wheel/tire
7-speed derailleur and freewheel
Hub motor
Rear mud guard
Swing arm
Rear shock absorber
Down tube battery
Rear rack
Battery connector
Rack battery (option)
Tail light
License plate holder
Quick release
On/ Off switch rack battery
Front fork
31.Left brake lever
(operates front brake)
32.Right brake lever
(operates rear brake)
33.7-speed twist shifter
34.Throttle grip
35.Left pedal
36.Right pedal
owner's manual
4.0 Unpacking
NOTE: Your A2B weighs 37.2 kg (82 lb).
LIFT WITH CARE. Two people are recommended.
4.1 Tools and equipment
• Pliers
• Side cutters (for cutting cable ties used to pack the A2B)
• Blanket or tarpaulin (to avoid scratching unprotected surfaces on the A2B whilst unpacking)
4.2 Delivered fully assembled and battery
Your A2B should be fully assembled and the battery
charged by your A2B dealer at the time of delivery. If not
contact us immediately as this will void your warranty.
However, if you need to unpack your A2B, follow these
1. Carefully open the flaps at the top of the carton.
Remove all staples (with pliers if necessary), to avoid the
possibility of scratching yourself or your A2B.
2. Carefully lift the A2B out of the carton. Two people are
3. Lay the A2B on a tarpaulin or blanket to avoid scratching
any unprotected surface whilst you remove the packing
4. Remove the accessory boxes from the carton.
5. Using the side cutters, clip the cable ties that hold various
components to the frame. ONLY clip those cable ties that
are used to attach components to the frame or prevent
movement during shipment (and NOT those trimmed of
excess length).
The A2B has cable ties that manage electrical and
control cable routing (and ARE trimmed of excess length).
DO NOT clip these cable ties as they are necessary for the
safe operation of the vehicle.
6. Remove all of the protective wrapping from the A2B and
dispose of the packaging responsibly.
The battery and charger should be tested when received.
If the battery or charger is damaged in any way, a claim
should be filed with the carrier. A full report of the damage
should be obtained by the claim agent, and this report
should be forwarded to Hero Eco. Hero Eco will advise the
action required and arrange for repair or replacement.
Charge the battery for at least 12 hours before using
the A2B for the first time. See 6.2 & 6.3.
4.3 Installing the handlebar and display

1. Using a 4 mm allen key,
unscrew the three bolts that
hold the handlebar clamp
to the handlebar stem (pic
a). Remove the cap from
the handlebar stem.
2. Install the steering stopper.
Ensure the stopper that the
stopper will not touch the steering tube. Tighten the bolts to
6 Nm (pic b).
3. Nest the handlebar into the handlebar stem, ensuring that
it is centred and properly oriented. Replace the cap, reinstall
the bolts holding the cap to the stem and tighten securely
the bolts to 6 Nm per bolt (pic c).
It is essential to tighten
all three bolts evenly to
ensure proper installation.
The bolt located on the
top of the stem should be
tightened to no more than
1 Nm. The left side bolt
on the bar stem must be
tightened to 10-12 Nm.
4. Install the display and
tighten the bolts to 6 Nm
per bolt (pic d).
5. Install the key lock and
tighten the bolt to 3 Nm (pic
The 'Nm' measurements
refer to the torque value
that should be applied
to the tightening of bolts,
please use an appropriate
spanner to apply the
correct torque values as
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4.4 Installing the pedals
1. Lightly coat the threads of the pedal axle with light
grease. This will make screwing the pedal into the crank
arm easier, and will help prevent corrosion in the future.
2. Two pedals (a left pedal and a right pedal) are supplied.
Each pedal is DIFFERENT. There is an 'R' stamped on the
spindle of the right-hand pedal, and there is an 'L' stamped
on the spindle of the left-hand pedal.
3. Install the right pedal on the right-hand side, and the left
pedal on the left-hand side. It is very important that each
pedal is installed on the correct side.
7. Using a 15 mm open end spanner, securely tighten
the pedals.
8. Ensure the pedals are installed with a torque value
of 30 Nm.
An improperly installed pedal may fall off your A2B
whilst in use. This may cause an accident resulting in serious
injury or death and property damage. Ensure that your
pedals are properly installed and tight before each ride.
CAUTION: Attempting to screw the left pedal into the right
crank arm (or vice versa) will damage the internal threads
of the crank arm. This damage is not ‘fixable’ and the
crank arm will have to be replaced.
4. When installing the right pedal, screw the threaded
section of the pedal spindle into the crank arm turning the
spindle in a CLOCKWISE direction.
5. When installing the left pedal, screw the threaded
section of the pedal spindle into the crank arm turning the
spindle in a ANTI-CLOCKWISE direction.
6. Screw each pedal as far as you can into the crank arm
with your fingers.
4.5 Changing components or adding accessories
Before installing any component or accessory, including a
different tyre, make sure that it is compatible with your A2B
by checking with your A2B dealer.
Read, understand and follow the instructions that
accompany the component or accessory you purchase
for your A2B. Follow the component manufacturer’s
instructions if they conflict with these instructions.
As with all mechanical components, the bicycle is
subjected to wear and high stresses. Different materials
and components may react in different ways to wear or
stress fatigue. If the design life of a component has been
exceeded, it may suddenly fail possibly causing serious
or fatal injuries to the rider. Any form of crack, scratches
or change of colouring in highly stressed areas, such as
frame, fork and handle bar, indicates that the life of the
component has been reached and it should be replaced
immediately by an A2B dealer.
Failure to confirm with compatibility, proper installation,
operation and maintainance components or accessorys
can result in serious or fatal injury.
Using non-genuine components or replacement parts
may compromise the safety of your A2B and void the
If you change components or add accessories, you do
so at your own risk because Hero Eco may not have tested
that component or accessory for compatibility,
reliability or safety on your A2B.
4.6 Brake lever adjustment
Can you comfortably operate the brakes? If not, take your
A2B to an A2B dealer and ask them to adjust the angle of
the brake levers.
Alternatively, follow the instructions below to adjust the
brake lever angle:
1. Loosen the bolt underneath the brake lever with an
appropriate allen key.
2. Adjust the angle to suit.
3. Tighten up the bolt underneath, ensuring the brake lever
is firmly fixed in place.
Should you need to adjust the brakes themselves,
please take your A2B to an A2B dealer to make the required adjustments.
Inside Leg Height
1 inch / 2.5 cm
Frame Height
Frame Height
Inside Leg Height
Frame Height
owner's manual
4.7 Seat height adjustment
The seat height may require adjustment.
Ask your A2B dealer to adjust it before you ride.

To determine the correct height of the seat for the rider
1. Straddle the assembled A2B with your feet shoulder
width apart and flat on the ground.
2. There must be at least 25 mm (1 inch) clearance (1) between the intersection of the main tube and the seat post
and (2) the crotch of the rider.
3. The minimum inside leg height is measured from the
intersection of the top tube and seat post plus 25 mm and
the floor. The minimum inside leg height for the A2B is 68.5
cm (27 inches)
Height adjustmen
1. The seat height can be adjusted with a 5 mm allen key
by loosening the seat
post fastening bolt.
2. After adjustment,
check to ensure the
bolt is tightly fastened
and ensure there is no
movement in the seat
position in any direction.
3. The seat post clamp
should be secured at
10-12 Nm.
Failure to correctly secure the seat can result in serious
injury or death.
DO NOT raise the seat beyond the 'minimum insertion'
mark on the seat pillar.
Ensure the seat clamp bolt (seat pillar - seat post) is
tightened to 27 Nm.
4.8 Pre-load adjustment rear shock absorber
Adjust the pre-load
of the rear shock
absorber according
to your weight. To increase the pre-load
turn the lower part of
the shock absorber
clockwise. To decrease the pre-load
turn the lower part of
the shock absorber
A not correct adjusted pre-loed may result in interference between the rack battery and the rear fender.
4.9 Rear view mirror adjustment
Mount your A2B and align the
the front wheel to straight direction. Look at the rear mirror
and adjust the mirror, so that
you can see what is behind
A correct adjusted rear
view mirror is essential to watch
the traffic behind of you. A
not correct adjusted mirror is
potentially resulting in serious injury or death and property
owner's manual
5.0 Understand your A2B
After having read this section, if you are still unsure, please ask an A2B dealer to explain any functions or features that
you do not understand before your first ride.
5.1 Overview
3. Mount your A2B and get comfortable.
The A2B has a 'power on demand' function, this means the
motor engages only when the rider twist the throttle.
4. Turn the key to position 'A'
or 'B' if an optional battery is
attached to turn the battery
power ON.
5.2 Starting and stopping
1. Put your helmet on and select a quiet area away from
cars, other cyclists, obstacles or other hazards.
2. Ensure that the power is OFF and raise the kickstand into
the riding position.
Mounting the A2B with the power ON may result in the
inadvertent actuation of the throttle and the A2B will lurch,
potentially resulting in serious injury or death and property
damage. For the same reason, turn the power OFF before
dismounting .
DO NOT sit on the A2B whilst it is supported by the
kickstand, you will damage the kickstand, possibly the
The throttle must be in
zero position while turning
the power ON and will be
activated after 2 seconds.
5. To apply motor
power twist the
throttle on the right
hand side of the
handlebar gently
toward you.
6. Test the brakes at
slow speed. Left lever actuates the rear brake and the right
lever actuates the front brake. Put your weight toward the
rear and gently apply the brakes, rear brake first. Sudden
or excessive application of the front brake could throw you
over the handlebars. Applying brakes too hard can lock
up a wheel, which could cause you to lose control and fall.
Remember that there are power cut-off switches
embedded in the brake levers. When you apply the
brakes, power to the motor will turn OFF. Therefore, do not
hold the brake lever(s) when you want the motor to run.
5.3 Display
Your A2B will provide instantaneous power whether you
are pedalling or not. Therefore, there is no need to pedal
as you start-up. However, the motor consumes more power
during a start from a standing stop than at any other time,
even more than climbing a hill. To conserve battery power,
and increase your range, pedal during a start from a
standing stop to relieve some of the load from the battery.
C – Battery State-of-Charge
7. Check out the handling and response of your A2B.
Familiarize yourself with how the suspension responds to
brake application and rider weight shifts.
A – Reset button
B – Mode button
D – Speedometer - displays
in steps of 0.1 km/h or 0.1
E – Odometer / Tripometer - displays km or miles pedalled,
this could be your total or your trip distance measured
to 10 meter or 0.01 mile.
- Switching between Odometer and Tripmeter - Press the
Mode button B
- Reset Tripmeter - Switch to TRIP and press the Reset button
A for 2 seconds.
- Setting km/h / mph - Press the Reset button A and Mode
button B for more than 2 seconds to get in the setting
mode. Press the Reset button to switch between km/h
and mph. Press the Mode button for 2 seconds to return
to the normal mode.
owner's manual
5.4 Gears and Shifting
Your A2B has a 7-speed rear derailleur controlled by the
twist gear shifter on the left side of the handlebar.
To shift gears, pedal
at a steady pace and
rotate the shift grip until
you find the gear most
comfortable for you
and the current conditions. To make pedalling easier (when
encountering a hill), rotate the grip toward you to downshift, this will also make you pedal faster to achieve any
given speed.
motor. Using the derailleur control, adjust the gear setting
to find a gear that makes pedalling comfortable while
assisting the motor
5.5 Lights
To switch the light on
and off twist the switch
on the head light to on
or off position.
To ride faster (on a flat section or a downhill), rotate the
grip away from you to up-shift, allowing you to pedal more
slowly for a given speed, but with more effort required.
Never pedal backward while shifting gears. The chain
could derail and you could lose control, resulting in an
accident that could cause serious or fatal injury and/or
property damage. Always pedal forward at a steady pace
when shifting gears.
The 7-speed rear derailleur operates independently of the
5.6 Luggage Carrier
Your A2B equipped with a durable luggage carrier. In case
you need to carry luggage or any goods with your A2B,
please carefully read the enclosed instructions before using
the luggage carrier.
1. The luggage carrier is attached to the rack tube of your
A2B by 4 x T25x18 torx flat head screws. If you are frequently
using the luggage carrier, always check that the screws are
secured tightly at torque value 6-8 Nm.
2. The maximum weight that could be carried is 10 Kg.
3. Please ensure that the luggage is fastened securely, so
that it can not fall off while riding. Take care that loose
straps or other itmes can not get cought by the spokes or
wheels while riding.
4. The luggage carrier is not designed for carrying a second
rider or an attachment of a child seat. It can also not being
used to pull a trailer.
5. The permissible load of your A2B should not be exceeded,
please refer to the specification section in the owner’s
6. Do not modify the luggage carrier in any case of usage.
7. You need to distribute the weight of your luggage or
goods evenly between the two sides of the luggage carrier.
8. Please be aware when the luggage carrier is loaded,
your A2B may behave differently, especially when steering
or braking the bike.
9. Once you attached your luggage on the luggage
carrier, please be aware that rear light and reflector may
be obscured by your luggage.
Failure to observe these instructions can result in serious
or fatal injury.
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5.7 At the end of your ride
If you have any questions, or if you feel anything about
your A2B is not as it should be, ask your A2B dealer before
you ride again.
5.8 Recharge your discharged battery
Fully recharge your battery within 3 days if the battery is
completely discharged because a lithium ion battery left
in a discharged condition deteriorates much faster than a
fully charged battery. See 6.2 & 6.3.
5.9 Your range
Factors affecting range:
• Battery state-of-charge
• Tire inflation pressure
• Front wheel bearings and both brakes (tight bearings
or a dragging brake shoe reduces range)
• Lots of starts and stops (full power from a standing start
draws the most amperage from the battery)
Maximize your range
• Fully charge your battery before each ride
• Check tire pressure regularly and inflate to 2.8 bar (40 psi)
(printed on the tire sidewall)
• Have your A2B serviced periodically to ensure that the
front bearings turn freely and both brake discs do not rub
the brake shoes when they are not applied
• Minimize the weight that you carry
• Ride at slower speeds
• Accelerate more slowly and pedal as you accelerate to
your cruising speed
• Keep the chain and derailleur lubricated with bicycle
recommended chain spray
• Rider weight (it takes more energy to accelerate a
heavier person)
• Your speed and local wind conditions (range is reduced
when travelling fast against a high wind)
• Terrain (travelling on a soft surface or climbing a hill uses
more power)
6.0 Battery use, storage and disposal
6.1 The battery & charger
1. Rack battery
2. Down tube battery
3. Battery charger
Use only the battery
supplied with your
A2B or a battery
provided by Hero Eco
as a replacement for
the battery supplied
with your A2B. Use of
any battery not supplied with your A2B WILL void the warranty and may cause damage to the electrical system and
the hub motor.
Improper use and poor storage of this battery will void the
warranty and may cause serious or fatal injury or other hazardous situation including fire and property damage.
Improper use includes: using this battery with any other
vehicle or appliance, subjecting the battery to intense
physical shock or severe vibration, creating a short circuit
of the discharge terminals of the battery.
Poor storage includes: storing near excessive heat and/or
open flames, long term exposure to sunlight.
Use only the battery charger supplied with this battery. Use
of any other battery charger will void the warranty and
may cause damage to the battery, serious or fatal injury
and/or other hazardous situation.
Improper use of this battery charger battery will void the
warranty and may cause serious or fatal injury or other
hazardous situation including fire and property damage.
Improper use includes: blocking the fan vent on the
charger while the battery is charging as this will cause overheating, subjecting it to intense physical shock or severe
This battery charger supplied with this battery is for INDOOR
use only.
Avoid any contact with water or other fluids. If the battery,
charger or any connections become wet, immediately
unplug the charger and thoroughly dry all components
prior to charging the battery.
owner's manual
6.2 Charging the battery
Your A2B dealer should provide a fully charged
battery upon delivery of your A2B, should this not be the
case, please ensure that prior to its first use, you charge the
battery supplied with your A2B for at least 12 hours.
1. Check the Voltage Selector
switch on the charger to ensure that
it is set to your local voltage (115 V
2. Plug the charger into the wall
outlet, ensuring the charger is turned
3. Ensure that the battery Power
Switch is switched OFF before connecting the charger to the battery.
4. Rotate the charger port cover to
expose the charger socket.
5. Carefully align
the connector
pins and connect
the charger to
the battery by
plugging the connector into the
charger socket.
6. Turn ON the charger using the
ON/OFF switch on the charger.
7. LED Indications:
• The Power LED will illuminate
RED when the charger is
plugged into a wall outlet and
the ON/OFF switch is in the ON
• The Indicator LED will illuminate AMBER while the
charger is charging the battery.
• The Indicator LED will change to GREEN when the
battery is fully charged.
8. When charging is complete (the Indicator LED is GREEN),
turn OFF the charger using the ON/OFF switch on the
9. Unplug the charger from the wall outlet then carefully
unplug the charger from the battery pack by pulling the
connector out of the charger socket.
10. Rotate the charger port cover clockwise or counter
clockwise to cover the charger socket.
11. Your battery is now ready for use.
NOTE: The battery will not take a charge if you connect
the battery when the charger is switched on.
6.3 Battery charging
Charging times
Before using battery for first time
Fully discharged
To maximize battery life, recharge as soon as possible after
every use.
Avoid leaving the battery charger ON and plugged
into your battery for more than 12 hours at a time. Once
the battery is fully charged, turn OFF the charger and
unplug it from the pack.
Avoid charging the battery at a temperature lower than
0 °C or over 40 °C. If possible charge the battery at room
owner's manual
6.4 Low battery charge
The motor controller and battery management system
(BMS) are designed to turn off the power to the motor
when the voltage of the battery drops to a predetermined
point. This is to protect the battery from the harmful effects
of over-discharge.
The low battery charge
symbol will turn on if the
remaining capacity is
lower than 10%.
When the power turns
off due to a low battery,
plug the battery into the
charger supplied with
your A2B to recharge
the battery within 3
days. It will take 4 - 6
hours to fully recharge a completely discharged battery.
If you have any questions about this battery or its usage,
contact our Customer Services Department.
Never attempt to use remaining power once the BMS
has switched off the battery. You will damage your battery.
Fully recharge your battery within 3 days if the battery
is completely discharged because a lithium ion battery left
in a discharged condition deteriorates much faster than a
fully charged battery. See 6.2 & 6.3.
6.5 Battery storage
Disconnect the battery from the bike and store the battery
in a cool (50º-70ºF, 10º-21ºC), dry place. Avoiding exposure
to direct sunlight.
The Battery Management System (BMS) is always on,
consuming a small amount of power from the battery.
Make sure that the power switch on the battery is switched
off when not in use including when the A2B is parked. If the
battery pack is not used for an extended period of time,
this will eventually drain the battery resulting in permanent
Charging instructions for storage
Before storing battery – half charge 2
Half re-charge at least every 30 days of storage
Failure to follow these battery storage charging instructions
will void the warranty.
Ensure the battery is switched off before storage.
You may recharge the battery at any time, regardless
of its state-of-charge. As your battery ages, it will gradually
lose capacity. With proper care and maintenance, your
battery will retain up to 80% of its capacity over at least 500
discharge/recharge cycles. As capacity diminishes, you will
notice a gradual drop-off in maximum range capability.
When range falls to an unacceptable level, contact your
A2B dealer for a replacement battery.
6.6 Battery disposal
DO NOT dispose of the battery as household waste.
Dispose of, or recycle according to local authority
guidelines or contact our Customer Services Department
for guidance.
6.7 Attaching and connecting the rack battery to
your A2B
Prior to its first use, charge the battery supplied with your
A2B for at least 12 hours.
1. Insert the key and unlock
the fastener.
2. Raise the fastener.
3. With the fastener in the
open position, align the
battery with the mounting
rails and slide into position.
4. Press the fastener down then secure the battery by
locking the fastener into position. Remove the key.
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7.0 Important Pre-ride Safety Information
5. Connect the battery to
the A2B via the large 6 pin
connector. Carefully align
the tab and pins of the connector to the socket on the
battery and plug in. Tighten
onto the thread.
6. To use the battery ensure
that the battery is switched
on. The switch is on the back
of the battery.
Ensure that you and your A2B are both ready for safe and
enjoyable use.
ALWAYS wear an approved bicycle helmet. If you lend
your A2B to someone else – make sure you also lend them
an approved helmet.
NEVER carry a passenger. Overloading your A2B with a
second rider can lead to severe injury or death.
OBEY all traffic laws. Always ride on the correct side of the
road, with and not against the flow of traffic.
Watch out for car doors. Be aware of the possibility of car
doors opening into your path.
Be extra careful in wet conditions. In wet conditions it might
take double or triple the distance you need to stop your
A2B. Ride slower, anticipate your stops and apply the brakes
earlier. Wet roads are slippery – take corners carefully.
Make sure you are seen. In poor light conditions and at
night, wear light coloured clothing, preferably with
reflective strips.
Ride attentively. Watch out for both moving and stationary
Check your A2B before every ride.
Do a ‘walk around’ of your A2B before every ride checking
brakes, tires and the tightness of all the important fasteners.
Have your A2B checked by an A2B dealer at LEAST once
a year. Your safety depends on the roadworthiness of your
Reflectors. Your A2B has side
and rear reflectors to make
you more visible at night.
Ensure they are in place,
properly positioned and clean
before each ride.
Lights. Your A2B has a front light
and rear tail light to make you
more visible at night. Ensure they
are functional and clean before
each ride.
Brakes. Check your
brakes before each
ride. Left brake lever
actuates the rear
brake and the right
brake lever actuates
the front brake.
Brake Pads. When checking your brakes, it is important
to check the full brake system. Brake Pads are subject to
normal wear and tear and over time wear down. Brake
pads should never be worn down to their limit. Ask your A2B
dealer to check and replace brake pads.
Pedals. Ensure that your
pedals are properly installed
and tight before each ride.
Saddle. Ensure that your
saddle is properly adjusted
and tight before each ride
(see 4.7).
Handle bar and bar stem.
Ensure that your handle bar and bar stem is properly
adjusted and tight before each ride (see 4.3).
owner's manual
Tire pressure. Your A2B
features heavy duty inner tubes
to help avoid flat tires. However, tires normally lose pressure
over time. An under inflated
tire can cause premature tire
failure, and will require
significantly more energy
(electric and human) to propel
your A2B. Low tire pressure will
significantly reduce the range under electric power. The
recommended tire pressure for the front and rear wheel is
2.8 bar (40 psi).
Quick release. Make
sure that your front wheel
quick release is properly
adjusted and tight. Failure
to properly adjust and
lock your front wheel
quick release may result
in the wheel falling off
while you are riding which
could result in serious or
fatal injury and/or property damage. If you are uncertain
about any aspect of the assembly and adjustment of your
A2B, ask your A2B dealer.
Rear view mirror. Your A2B has
a a rear view mirror to enable you to watch the traffic
behind you. Ensure the mirror is
adjusted correctly and clean
before each ride.
Battery. Check the display prior
to setting off on your journey to
ensure the battery has enough
charge to easily last your
If you don’t understand
any aspect of the use and
care of your A2B, ask your A2B
8.0 Maintenance
Have your A2B checked by an A2B dealer at least once a
8.1 Wheels
The front and rear wheels should
be centred in the fork and frame.
Wheels should be checked regularly
for proper spoke tension and rim
alignment. DO NOT ride your A2B if it
has broken or missing spokes. Wheels
should rotate smoothly without
wobbling from side-to-side or up-anddown.
8.2 Hub bearings
Check the hub bearing
adjustment periodically by
lifting the wheel off the ground
and spinning it and try to
move the rim from side-to-side
between the fork or frame.
No lateral movement should
occur. If you detect lateral
movement in either wheel, the
hub bearings must be adjusted
or replaced.
8.3 Wheel rims
The rims must be smooth,
without cracks, bulges or
flat spots. Take your A2B to
an A2B dealer or qualified
bicycle mechanic to repair
and/or adjust your wheels if
8.4 Drive chain
Your A2B has a high
quality chain that
needs to be cleaned
and lubricated
regularly with bicycle
industry approved
synthetic lubricant.
owner's manual
8.5 Brakes
operation under any condition, ask your A2B dealer.
Check cables or oil pipes for signs of wear and fraying. If
your A2B is equipped with hydraulic disc brakes additionaly
check for signs of oil leakage.
Brake disks and brake linings must be free of oil and
Squeeze the brake lever firmly and check for proper
brake function.
Ensure rotors are free of foreign substances and oils.
Brake pads should never be worn down to their limit,
replace as necessary.
Should your brake pads appear to be worn down or your
brakes are not as responsive as they used to be, ask your
A2B dealer to check and replace brake pads.Brakes lose
effectiveness when wet.
Avoid riding in wet weather. If it is unavoidable, remember
that stopping your A2B will require extra distance.
Ride more slowly, keep a greater interval between yourself
and other traffic, and begin braking sooner than normal.
Failure to take these precautions could lead to an accident
causing serious or fatal injury and/or property damage.
If you are uncertain about any aspect of the brake
8.6 Tires
Check tiress for any damage, cracking, unusual or
excessive wear. The tire should be properly seated in
the rim and the fit of the tire bead in the rim should be
periodically checked. Check for foreign objects in the tire
tread and that the valve stem is straight in the rim.
Damaged or worn tires should be replaced immediately.
Take your A2B to an A2B dealer or a qualified bicycle
mechanic to repair and/or replace your tires if necessary.
In the unlikely event of having a flat tire you need to know
the correct procedure for removing and re-installing the
front or rear wheel.
The tire must have at minimum a positiv profil of 1 mm
by law.
8.7 Removing and re-installing wheels
Removing front wheel
1. Release the front hub
quick release by rotating
the quick
release lever away from
the hub until it is fully open.
2. Turn the adjusting nut on
the opposite side of the
hub from the quick release
lever ANTI-CLOCKWISE until
the nut and quick release
lever body clears the
safety protrusions on the
fork tip.
3. The front wheel can
now be removed form the
Re-installing front wheel
1. Position the wheel in the
front fork so that the quick
release lever is located on
the left side of the front
2. Move the quick release
lever to the OPEN position
(lever curves away from
the hub) and position the
wheel in the front fork so
that the axle is located in
the fork drop-outs.
owner's manual
3. Turn the adjusting nut on
the right side of the hub
clockwise such that you
feel resistance to closing
the lever when the lever is
parallel to the centreline of
the hub.
4. Firmly grip the fork with
your left hand, and push
the lever until it is at a 90º
angle to the centreline
of the hub. The lever is
securely tightened when it
takes a significant amount
of force to position it in
the closed position. The
appropriate amount of
force necessary to close
the lever when it is properly adjusted will result in an imprint
of the lever in the palm of your hand. Once closed, the
OPEN designation on the lever will no longer be visible.
When properly closed, it is impossible to move unless you
open it again by reversing the steps above. If you can
easily move it, open the quick release lever and tighten the
adjusting nut another 180º and try again.
Please follow the instructions provided for the quick
release mechanism to ensure proper use. Failure to
properly install this quick release front hub may result in
the front wheel falling off while you are riding. This could
result in serious or fatal injury and/or property damage. If
you are uncertain about any aspect of the assembly and
adjustment of your A2B, ask your A2B dealer.
5. Ensure that the brake disc is correctly inserted into the
brake calipers and is correctly adjusted.
If you are unsure about this brake set-up and
adjustment procedure, please take your A2B to your A2B
dealer or any qualified bicycle mechanic, and ask for
assistance in adjusting the brakes. Improperly adjusted
brakes may cause reduced braking performance, leading
to an accident that could result in serious injury or death
and property damage. DO NOT ride your vehicle if you are
not confident that the brakes are working properly.
Removing rear wheel
1. Ensure that the power is
turned OFF and remove
the key.
2. Remove the cable ties
holding the power cable
to the frame located on
left hand chain stay.
4. Using a 19 mm spanner, loosen and remove the hub
axle nuts.
5. Loosen and remove the
torque arms retention bolt
from the right and left drop
6. Remove the torque arms
from the A2B by sliding
them off the axle.
7. Remove the rear wheel by sliding it out of the frame
while disengaging the chain from the freewheel.
3. Disconnect the motor
power connector by
unscrewing the cap nut.
Re-installing rear wheel
Reverse the removal instructions (7 -1) opposite.
Re-install the torque arm. Failure to do so will result in
damage to the frame.
Ensure that the rear wheel is properly centred in the
frame before securely tightening the axle nuts to 60 Nm.
owner's manual
Ensure that the brake disk is
correctly inserted in the brake
calliper, and the wheel rotates
freely without
interference from the brake
Ensure correct replacement of
the chain on the front and rear
chain rings.
Reconnect the motor power
Cable tie both motor cables to
the frame.
If you are unsure about this brake set-up and
adjustment procedure, please take your A2B to your A2B
dealer and ask for assistance in adjusting the brakes.
Improperly adjusted brakes may cause reduced braking
performance, leading to an accident that could result in
serious or fatal injury and/or property damage. DO NOT
ride your A2B if you are not confident that the brakes are
working properly.
9.0 Cleaning
Rubber and plastic parts will
be damaged by caustic or
penetrating cleaning agents
or solvents.
Always carry out a brake test
after cleaning and before
starting a ride!
Never use paint-polishing
agents on plastic parts.
- After a longish ride,
thoroughly clean the A2B
and preserve it with a
commercially available
anti-corrosion agent.
Do not use steam or highpressure jet devices!
Such devices can damage
seals, the battery and electrical system.
Protect the environment by using only environmentally
friendly preservation agents,and use them frugally.
- To wash the A2B, use a soft
sponge and clean water.
- Afterwards, dry off with a
polishing cloth or chamois.
- Do not wipe off dust or dirt
with a dry cloth, to avoid
scratching the paint or
Do not use hot water, which would in crease the effect of
the salt.
- At the end of each ride, wash the A2B with cold water.
- Thoroughly dry the A2B.
- Treat parts liable to corrosion with wax borne anticorrosion agents.
Use of the A2B in the winter can cause considerable damage due to the presence of salt on the roads.
owner's manual
10.0 Trouble Shooting
No power? Here are some solutions. If they do not solve your problem ask an A2B dealer for help.
Possible cause(s)
A2B does not turn on
1. Dead battery
Recharge battery. See 6.2 and 6.3
2. Key switch is not in power on position
Switch on the key switch / battery
A2B turns on, but motor
does not run (display
illuminates and
state-of-charge indicator
shows a charged battery)
1. A brake lever is applied
Do not apply the brakes when starting
the vehicle. Make sure brake levers are
fully forward
2. The motor power connector is unplugged
Ensure motor power connector is
securely connected
A2B turns on, but if turning
the throttle the motor does
not turn on
1. System is not yet activated
Wait 2 seconds before twisting the
Motor power is decreasing
while climbing uphill
1. Motor temperature is getting too high
Support the motor by pedaling and let
the motor cool down
11.0 Technical Information
General performance specification
• Overall dimensions: 1790 mm x 695 mm x 1105 mm
• Tyre size: 3.0" x 20"
• Frame size: unisex 49 cm (19")
• Curb weight without battery: 33.9 kg (74.7 lb)
• Curb weight with battery: 37.2 kg (82.0 lb)
• Maximum permitted load: 140 kg (310 lb)
• Maximum permitted load on rear carrier: 10 kg (22 lb)
• Maximum speed in "on road mode", flat level ground,
motor power only: 32 km/h (20 mph) NOTE: regulated
• Maximum range, flat level ground, motor power only,
no starts/stops: approx. 32 km (20 miles)
• Hill climbing capability, motor power only, 75 kg (165 lb)
rider, 37.2 kg (82.0 lb) bike, total 112.2 kg (247.4 lb): 5°
• Operation conditions: Temperature +23 °F to 104 °F
(-5 to 40 °C), maximum humidity 80%
Electrical specification, battery
• Battery chemistry: lithium ion
• Configuration: 10S6P
• Nominal voltage: 36V
• Normal voltage operating range: 31 to 41V
• Nominal capacity: 11.4 Ah (410 Wh)
• Maximum discharge: 30 A
• Charging method: CC/CV (Constant current/
Constant voltage)
• Weight: 5,9kg
Battery management system (BMS)
• Controls and stops over-charging
• Controls maximum charge current
• Controls over-discharge amperage (30 A max)
• Controls over-discharge voltage
• Over temperature shut-off
• Provides cell-to-cell balancing function
Electrical specification, battery charger
• Input voltage: AC 115/230V, 50/60Hz
• Output voltage: 42 ± 0.5 VDC
• Output amperage: 4.0 ± 0.4A
• AC line fuse rating: 10 A
Electrical specification, motor
• Motor type: brushless, gearless
• Motor voltage rating: 36-volts
• Maximum power output: 800 W
• Continuous power output: 500 W
• Maximum torque: 50 Nm
Electrical specification, motor controller
• Control function: current, voltage, temperature,
recuperation, speed, torque, dynamofunction motor
• Power supply light: 6 V, 7 W
• Position: end of down tube
owner's manual
12.0 Warranty & Security Details
A2B Warranty (the “Warranty”)
The following definitions in this clause apply in the Warranty:
Goods means:
In relation to the A2B: the frame; the motor
system (motor and controller); the lithium ion
battery; and all other components of the A2B
except for the tires, tubes and brake pads.
A2B means:
Light electric vehicle manufactured and
distributed by Hero Eco.
Time Periods means: For the frame, five year on the A2B;
For the motor system (motor and controller),
two years from the date of delivery of the A2B
to you;
For the lithium ion battery, one year from the
date of delivery of the A2B to you;
For the charger, 90 days from date of sale
For all other components of the A2B except for
the tires, tubes, brake pads and grips, one year
from the date of delivery of the A2B to you.
Hero Eco means:
Hero Eco Ltd.
You, Your means:
The original purchaser of the A2B from an
authorized A2B dealer.
2.1.1 conform in all material respects with their description
subject to any qualification or representation contained in
the brochures, advertisements or other documentation;
2.1.2 be of satisfactory quality;
2.1.3 be fit for any purpose Hero Eco says the Goods are fit for or
for any reasonable purpose for which You use the Goods;
2.1.4 be free from material defects in design, material and
workmanship; and
2.1.5 comply with all applicable statutory and regulatory
requirements for selling the Goods in Europe.
2.2 This Warranty is in addition to Your legal rights in relation to Goods
which are faulty or which otherwise do not conform with the terms
of the Warranty.
2.3 This Warranty does not apply to any defect in the Goods arising
2.3.1 fair wear and tear;
2.3.2 wilful damage, accident or negligence by You or any third
2.3.3 Your A2B having been assembled by someone other than
Hero Eco or an authorised A2B dealer;
2.3.4 if You use the Goods in a way that Hero Eco does not
recommend, including, but not limited to, using the A2B for
commercial activities or in competitive events or training for
such activities or events;
2.3.5 Your failure to follow our instructions, including, but not
limited to, the owner’s manual; or
2.1 Hero Eco warrants that on delivery of the A2B to You and for the
Time Periods, the Goods shall:
2.3.6 any modification, alteration or repair You carry out without
Hero Eco’s prior written approval.
2.4 The Warranty applies to any repaired or replacement Goods that
Hero Eco supply to You in the unlikely event that the original Goods
are faulty or do not otherwise conform with the Warranty.
3.1 In the unlikely event that the Goods do not conform with the
Warranty, please let Hero Eco know as soon as possible after delivery
by contacting an authorised A2B dealer or Hero Eco via our website
3.2 Hero Eco will ask You to return the A2B together with proof of
purchase to an authorised A2B dealer and once Hero Eco has
checked that the Goods are faulty, Hero Eco will at its sole discretion:
3.2.1 provide You with a full or partial refund in relation to the faulty
Goods; or
3.2.2 replace the faulty Goods; or
3.2.3 repair the faulty Goods.
not limited to, losses that fall into the following categories:
4.2.1 loss of income or revenue;
4.2.2 loss of business;
4.2.3 loss of anticipated savings;
4.2.4 loss of data; or
4.2.5 any waste of time.
4.3 However, clause 4.2 shall not prevent claims for foreseeable
loss of, or damage to, Your physical property.
4.4 This clause does not include or limit in any way Hero Eco’s
liability for:
4.4.1 death or personal injury caused by Hero Eco’s
negligence; or
4.4.2 fraud or fraudulent misrepresentation; or
4.4.3 any other matter for which it would be illegal or unlawful for
Hero Eco to exclude or attempt to exclude Hero Eco’s liability.
4.1 Subject to clause 4.2, if either You fail or Hero Eco fails to comply with
this Warranty, neither shall be responsible for any losses that the other
suffers as a result, except for those losses which are a foreseeable
consequence of the failure to comply with this Warranty.
4.2 Neither You nor Hero Eco shall be responsible for losses that result from
Hero Eco’s failure to comply with this Warranty including, but
13.0 Disposal
We at A2B support the proper disposal and recycling of our products. Please dispose of your vehicle and associated components at your local recycling facility. A2B will arrange for the proper disposal, when requested.
owner's manual
Owner registration
Fill out and return your owner registration card
immediately so that you may receive
important product information in the future.
Thank you.
Your A2B and certain key components have unique serial numbers.
Record these serial numbers for warranty purposes or in case your
vehicle is ever lost or stolen.
Vehicle serial number is located on the right side of the steering tube:
Vehicle serial number:
Motor serial number is engraved to the left side of the motor hub:
Motor serial number:
Battery number is located on the end cover of the battery.
Record this other important information:
Date of purchase:
Selling dealer:
Street address:
City / State / Zip:
Sales person:
Please keep this information in a safe place for future reference.
Battery serial number:
To fully protect your A2B against theft, buy a high quality bicycle lock and chain. Secure your A2B to a stationary object every time it is left
unattended and also lock your front and rear wheel and motor to the frame.
Hero Eco
Hero Eco Ltd
80 Coleman Street
London EC2R 5BJ
© Hero Eco Ltd. All rights reserved, October 2012
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