a2b Hybrid/24 User manual

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Owner´s manual Hybrid/24

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Contents
1.0 Introduction
2.0 Important information
3.0 Your A2B
4.0 Understanding your A2B
5.0 Battery use, storage and disposal
6.0 Important pre-ride safety information
7.0 Maintenance
8.0 Cleaning your A2B
9.0 Troubleshooting
10.0 Technical information
11.0 Warranty and security details
12.0 Disposal
13.0 Maintenance schedule
14.0 Owner registration
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Owner`s manual
1.0 Introduction
Welcome and congratulations on buying your new A2B Hybrid/24*, the electric bike that’s taking transport in a whole new direction. It’s the
new revolutionary way to get to work, pop to the shops or just get some fresh air. Compared to jumping in the car, an ebike is 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
www.wearea2b.com
*A2B Hybrid/24 is termed as ‘A2B’ throughout the rest of this manual.
A2B Global Head Office
Hero Eco Ltd
80 Coleman Street
London EC2R 5BJ
Germany
Hero Eco Ltd
Reichenberger Strasse 124
10999 Berlin
USA
Hero Eco Inc.
207 9th St.
San Francisco, CA 94103

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2.0 Important information
This owner`s 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.
• According to national rules a bicycle has to be equipped with two
independently working brakes, a bell, head light, tail light, side
reflectors on the wheels or integrated reflection stripes on the
tyres and front and rear reflectors.
• The A2B is designed for public road use. Don‘t ride off-road,
in water and don‘t use the A2B to jump in bumpy 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.
This indicates a potentially hazardous situation, which if not avoided, may result in serious injury, property or equipment
damage or inadvertent system failure.
Refers to useful or other important relevant information.
If you have questions or do not completely understand any of the instructions in this owner's manual, please ask your A2B specialist dealer.
Important symbols

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Owner`s manual
3.0 Your A2B
3.1 Components
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2
3
6
8
9
12
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14
13
17
16
18
15
20
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21
23
24
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4
10
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1. Saddle (seat)
2. Seat post
3. Seat post quick release
4. Frame
5. Display
6. Headlight
7. Quick release
8. Front wheel tyre
9. Front wheel rim
10. Front disc brake and rotor
11. Front mud guard
12. Pedal, crank arm and chain ring
13. Drive chain
14. Motor
15. Kickstand
16. Rear wheel rim
17. Rear wheel tyre
18. Derailleur and freewheel
19. Rear light
20. Rear mud guard
21. Reflector on battery
22. Battery
23. Rear rack
24. Battery plug

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A. Right brake lever
(operates rear brake)*
B. Left brake lever
(operates front brake)*
C. Gear shifter
D. Right pedal
E. Left pedal
A
B
C
E
D
* Please note that braking system is
opposite, to what is stated in this manual
in some countries please check with your
local dealer.

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Owner`s manual
3.2 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.
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 maintenance components or accessories can result
in serious or fatal injury.
Using non-genuine components or replacement parts may
compromise the safety of your A2B and void the warranty.
If you change components or add accessories, you do so at
your own risk because A2B may not have tested that component or
accessory for compatibility, reliability or safety on your A2B.
3.3 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.

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3.4 Adjustment of the seat height
The seat height may have to be adjusted. Please ask your A2B
specialist dealer to adjust the seat height before your first tour.
You may also adjust the seat height on your own as indicated below:
Determination of the correct driver's seat height
There are several ways of determining the correct seat height; the
method which can be carried out without any further auxiliary means
is described in the following: Sit on the saddle and stretch one leg.
Put your foot's heel on the pedal which is on the lowest point of the
crank turn. Your knee should now be almost straightened.
If you are sitting straight on the saddle while having this position,
the saddle's height is correct.
Of course, you then do not drive with legs stretched. If you put your
foot on the pedal while having the correct driving position (ball of
foot and metatarsophalangeal joint above the pedal axle), the knee
will remain slightly angled also on the lowest point of crank turn if
the saddle height has been adjusted correctly.
A short test ride is recommended to find out if the saddle is too high.
If the pelvis tilts to the right and the left in the rhythm of pedalling, the
saddle is too high. If the saddle is too low, you will usually find it out
only after many kilometres through pain in the knees.

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Owner`s manual
Frame Height Frame Height
Inside Leg Height
Frame Height
1 inch / 2,5 cm
Clearance
Inside Leg Height
Height adjustment
1. The seat height can be adjusted by loosening the quick release
for the saddle post.
2. Position the saddle at the desired height. Do NOT position the
saddle higher than the minimum insertion mark located on the
saddle post BY NO MEANS.
3. Push the lever of the quick release towards the frame, until it will
be closed again. The lever must not stick out to avoid danger
of injuries. The lever is safely attached if you must use efforts
to push it into the closed position. The efforts are appropriate if
the lever leaves a mark on the palm of your hand when pressing.
A properly closed quick-release cannot be moved anymore
unless it is reopened as specified above. If you can move the
mechanism slightly, open the lever of the quick release, turn the
adjusting nut by another 180° and try again.
4. After height adjustment, check if the saddle cannot be moved in
any direction.
An improperly attached saddle may lead to severe or even
fatal injuries. Ensure that the saddle clamp screw (saddle
post - saddle) has been tightened using 27 Nm.
• This user manual does not express any guarantee as to the
safe use of the A2B under all conditions.

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3.5 Handle bar adjustment
1. Loosen the bolts (A) using an
appropriate allen key.
2. Position the handle bar
symmetrical to the bar stem.
3. Turn the handle bar to the
desired angle.
4. Tighten the bolts consistently
to 5 Nm.
3.6 Bar stem alignment
1. Loosen the bolts (B) using an
appropriate allen key.
2. Once loose, align the stem
with the front wheel.
3. Once aligned, tighten the bolts
consistently to 15 Nm.
A
B
C
D
Bar stem angle adjustment
1. Loosen bolt (C) using an
appropriate allen key.
2. Position the stem to the
desired angle.
3. Tighten bolt (C) to 18.5 Nm
ensuring the stem is aligned to
the front wheel.
Caution: this is an A-head
stem, the top screw (D) is preloaded with 1-2 Nm and does not
adjust the handlebar stem. Trying to tighten bolt (D) can damage
the head set bearings.
Failure to correctly secure the bar stem can result in serious or
fatal injury. Ensure there is no play in the steering and that the
steering is working smoothly. Should you need further advice to
adjust the headset, please contact your A2B dealer.

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Owner`s manual
3.7 Display adjustment
1. Loosen bolt (E) on the rear side of the display using an
appropriate allen key.
2. Position the display to the desired angle.
3. Tighten the bolt (E) to 6 Nm.
E

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4.0 Understanding 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.
4.1 A2B Overview
The A2B has a ’true pedal assist’ function, this means the motor
engages only when the rider is pedalling. So you can get places
under your own steam yet have the comfort of the electric motor
giving you that extra boost along the way.
The A2B is equipped with a Torque Sensor, which means as soon
as you start to pedal, you’ll feel the motor kick in to complement
your pedalling – making riding an effortless pleasure.
4.2 Starting and stopping
1. Wear your helmet and select a quiet area away from cars, other
cyclists, obstacles or other hazards
2. Make sure that the battery is fully recharged.
3. Power ON the electronic system by using the E-key
(see section 4.3).
4. Raise the kickstand into the riding position. DO NOT sit on the
A2B while it is supported by the kickstand, you will damage the
kickstand and, possibly the frame.
5. Mount your A2B and get comfortable.
6. Apply motor power by pedalling the A2B.
7. Test the brakes at slow speed. The right brake lever actuates the
rear brake and the left brake lever actuates the front brake.
Applying brakes too hard can lock up a wheel, which could
cause you to lose control and fall.
Remember that there is a power cut-off switch embedded into
the right brake lever. When you apply the right brake, power to the
motor will turn OFF. Therefore, do not hold the right brake lever
when you want the motor to run.
8. Check out the handling and response of your A2B. Familiarise
yourself with how the suspension responds to application of the
brakes and shifts in rider weight.

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Owner`s manual
4.3 Display and electronic key
Turning ON/OFF the electrical system with the electronic key.
Your A2B is protected by an electronic key (E-key).
The system needs to be activated before your ride.
1. Hold the E-Key directly above the display.
2. The display will light up. Remove the E-key as soon as the A2B
logo appears.
3. At the end of your trip: to deactivate the system hold the E-key
above the display until it turns off. Remove the E-key now. The
system is deactivated.
By switching on the system with the E-Key display, battery and
controller will wake up from sleep mode. In rare cases not all
components will wake up the first time (e.g. no motor support), turn
off the system and try again.
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4.4 Display - functions
Functions and menu description
A. Knob button (turn and push function)
B. Battery state of charge indicator
C. Speed indicator
D. Assist level indicator
E. Speed unit (km/h or mph) indicator
Consider the E-key as you would a car or door key.
We recommend that you attach the E-key to your other
keys you carry with you.
B
D
C
A
E

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Owner`s manual
4.5 Assist level pre-selection
You have the choice between 3 different assist level modes. Which
assist level mode is actually selected is shown on the display at the
right upper side.
Select the assist level:
Push the knob button to enter the menu.
Turn the knob (counter clockwise) to change between the different
assist modes.
Once you have reached the correct assist level, push the knob to
confirm your selection.
The display switches back to the standard screen with the new
assist level set.
Standard display
1. Mode 0 – No power assistance, all display functions will work.
2. Mode 1 – Minimal power assistance, ideal for saving battery
power, maximum range.
3. Mode 2 - Standard power assistance, normal power, average
range.
4. Mode 3 - Extra power assistance, maximum power, reduced
range.
1
2
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4.6 Setup (change between km & miles).
Push the knob button to enter the menu.
Turn the knob untill setup (6) appears. Now push the knob
for 2 seconds to enter the setup menu. You can now change
between km and miles by pushing the knob (7) again for
2 seconds. Please wait, the system confirms your selection
automatically.
You enter the ts-value screen (8) by turning the knob in the
setup menu. This submenu is for servicing and allows dealer
and service technicians to measure the correct function of
your torque-sensor. To exit the setup menu from here Turn the
knob untill it shows back (9) and confirm with a push to return
to the standard screen again (1).
4.7 Switching between Odo & Trip
Push the knob button to enter the menu.
Turn the knob untill odo or trip (10/11) appears. Please wait,
the system confirms your selection automatically. To reset trip:
push the knob for two seconds once you are on the trip screen
(11).
ts-value
8
back
9
odo
231
10
setup
6
km
7
miles
trip
0.0
11
trip
5.1

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Owner`s manual
If you leave your A2B inactive for 10 minutes, the system will
switch off (including lights) and will go into sleep-mode.
4.8 Error Codes
If an error occurs, the warning sign (!) will indicate that an error has
occurred and one of the following error codes will be shown on the
display:
01 HARDWARE_Brake_SET: Over current hardware
02 RECUPERATION: Error regenerative braking
03 FAST_OVER_VOLTAGE: Fast overvoltage
04 FAST_UNDER_VOLTAGE: Fast undervoltage
05 SLOW_OVER_VOLTAGE: Slow overvoltage
06 SLOW_UNDER_VOLTAGE: Slow undervoltage
07 OVER_TEMP_135: Motor temperature over 135 °C
08 OVER_TEMP_INT: Over temperature controller
09 CORRUPT_HALL_VALUE: Error motor signals
10 WRONG_HALL_ORDER: Error motor rotatating direction
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11 Not applicable
12 RECOVER_WHILE_DRIVE: Reset while riding
13 I_OFFSET_OVER_LIMIT: Current offset is over limit
14 I_OFFSET_UNDER_LIMIT: Current offset is under limit
15 TORQUE_OFFSET_OVER_LIMIT: Torque offset is over limit
16 TORQUE_OFFSET_UNDER_LIMIT: Torque offset is under limit
(See graphic below)
Error messages will automatically be reset if the error ceases to
occur. Please contact your A2B dealer in the case of a permanently
displayed error message.

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4.9 Gears
Your A2B has a rear
derailleur controlled by the
gear shifter on the right hand
side of the handlebar.
To shift gears, pedal at a
steady pace and push the
shift lever (A) or (B) until you
find the gear most comfortable
for you and the current
conditions.
To make pedalling easier
(when encountering a hill),
push up lever (A) in riding
direction to down-shift, this
will also make you pedal faster
to achieve any given speed.
Push up lever (A) against stop
to down-shift two gears at
once.
To ride faster (on a flat section or a downhill), push up lever (B)
towards you to up-shift, allowing you to pedal more slowly for a
given speed, but with more effort required.
1
8
A
B
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 rear derailleur operates independently of the motor. Using the
derailleur control, adjust the gear setting to find a gear that makes
pedalling comfortable while assisting the motor.
4.10 Light
To switch the light on and off twist the switch on the headlight to on
or off position.
You can ride your A2B without attaching the battery. The motor
will generate power for the lights.

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Owner`s manual
4.11 Luggage carrier
Your A2B is 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
items can not get caught by the spokes or wheels while riding.
4. The luggage carrier is not designed for carrying a second rider
or the attachment of a child seat. It should also not be 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 manual.
6. Do not modify the luggage carrier in any case of usage.
7. 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 have attached your luggage to 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.