ben-e-bike TWENTY E-POWER 2020 User manual

User manual for the Model Year 2020
TWENTY E-POWER
TWENTYFOUR-SIX E-POWER
TWENTYFOUR E-POWER PRO
TWENTYSIX E-POWER PRO
TWENTYSEVEN5E-POWER PRO

2 BEN-E-BIKE INSTRUCTION MANUAL
AMPERUM GmbH
Stuttgarter Str. 72
D-78628 Rottweil
www.ben-e-bike.net
[email protected]m
Dear parents,
This part of the manual is primarily for you because it describes in detail the most important basics of using the
BEN-E-BIKE, which you should definitely explain to your child.
PLEASE NOTE!
Please read all warnings and cautions in this manual carefully before your child uses the BEN-E-BIKE for the first
time. Explain to your child the contents of this manual and do not allow it to use the BEN-E-BIKE until it has fully
understood all the safety-related aspects. Keep this user manual ready to hand so that it is always available. If you
pass on your BEN-E-BIKE to third parties, hand over this manual as well.
VALIDITY
This instruction manual is valid for BEN-E-BIKE's of model year 2020. The safety instructions for proper battery use
are explained at the end of this manual.
MARKING OF SAFETEY ADVICE
The purpose of warnings is to draw your attention to possible dangers. These warnings require your full attention
and understanding of the statements. Failure to follow a warning may result in injury to your child or others. The
warnings alone do not prevent hazards. You and your child should follow all warnings to avoid risks when using the
BEN-E-BIKE.
There are warnings in these instructions in the following classifications::
WARNING
The word "WARNING" indicates a hazard with a medium or high degree of risk, which, if not avoided, may result
in death or serious injury..
The Word „CAUTION“ indicates a hazard with a low level of risk which, if not avoided, may result in minor or
moderate injury.

3 BEN-E-BIKE INSTRUCTION MANUAL
AMPERUM GmbH
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www.ben-e-bike.net
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The word „NOTE“ warns of possible material damage.
NOMENCLATURE
The following figure shows an example of the most important components of a BEN-E-BIKE:
This is just a schematic illustration - the respective model may differ slightly!

4 BEN-E-BIKE INSTRUCTION MANUAL
AMPERUM GmbH
Stuttgarter Str. 72
D-78628 Rottweil
www.ben-e-bike.net
[email protected]m
Your child is exposed to great danger, if it does not know the rules of road traffic.
•Explain the traffic rules to your child (see chapter "Notes >> Road Traffic").
•Explain to your child the necessity of defensive behaviour on the road.
•Do not leave your child on the road with the BEN-E-BIKE until he or she has understood the traffic rules.
Your child is exposed to danger if he or she does not know how to handle a BEN-E-BIKE.
•Explain to your child how to operate this bike.
•Do not leave your child on the road with the BEN-E-BIKE until he or she is able to handle it properly.
Danger for children and for people with insufficient knowledge or skills! Incorrect use of a BEN-E-BIKE may
result in an accident or injury.
•Do not allow a BEN-E-BIKE to be used by persons with reduced physical, sensory or mental abilities or
lack of experience and knowledge.
•Do not allow cleaning, care and maintenance to be carried out by children under the age of 8 years.
Read these instructions thoroughly and explain all contents to your child.
Practice driving on the road with your child and do not let him or her drive alone unless you can answer for it.
Check your child's seating position regularly and have the settings adjusted by your specialist dealer..

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AMPERUM GmbH
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SAFETY ADVICE FOR USE
The braking distance may be prolonged or the BEN-E-BIKE could slip away in corners, e.g. in the wet or if the
track is covered by leaves, dirt or snow.
•Explain to your child that he or she has to adapt his or her driving style and speed to the weather and
road conditions.
Clothes can catch in rotating or moving parts. If your child wears the wrong footwear, it may slip off the pedals.
•Let your child use the BEN-E-BIKE only when wearing tight-fitting clothing.
•Let your child use the BEN-E-BIKE only when wearing non-slip shoes with a stable sole.
The BEN-E-BIKE may be damaged if is used the wrong way.
•Do not allow your child to jump over ramps and mounds larger than 15 cm.
•Prevent your child from driving through deep water holes.
•Prevent your child from performing "wheelies" (riding on the rear wheel only) or "stoppies" (riding on
the front wheel only).

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SAFETY INSTRUCTINS FOR ROAD TRAFFIC
Incorrect or improper use of the BEN-E-BIKE may lead to accidents.
•Only use the BEN-E-BIKE on public roads if the equipment complies with the country-specific regulations
for road traffic (see chapter "Notes> = Road Traffic") and has been retrofitted accordingly by you or your
specialist dealer.
•Only use the BEN-E-BIKE in compliance with the country-specific road traffic regulations.
•Explain to your child the country-specific and regional regulations for using bicycle lanes and roads.
With hardly visible clothing, other road users can poorly recognize your child, thereby reacting too late in
dangerous situations.
•Only allow your child to drive on the street with bright and eye-catching clothing, e.g. sportswear with
reflective elements.
If your child does not wear a helmet, severe head injuries may occur in the case of an accident.
•Only allow your child to use the BEN-E-BIKE when wearing a bicycle helmet (see chapter "Notes >> Road
Traffic >> Bicycle Helmets").
If your child does not pay attention to the road traffic, it endangers himself/herself and other road users.
•Explain to your child that he / she should not be distracted by other activities while driving.
•Prevent your child from using mobile devices while driving, e.g. smartphones.
•Prevent your child from using consumer electronics while driving, e.g. MP3 players.

7 BEN-E-BIKE INSTRUCTION MANUAL
AMPERUM GmbH
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SAFETY INSTRUCTIONS FOR MODIFICATIONS OF A BEN-E-BIKE
Modifying the BEN-E-BIKE with improper accessories endangers the safety of your child. The use of unapproved
accessories may cause severe malfunction of the BEN-E-BIKE.
•no parts such as frame, fork, handlebars, stem, brakes or other fittings may be replaced by other
components not approved by AMPERUM GmbH! On our website you will find among the menu item
"SERVICE ->" DOWNLOADS "the guidelines for the component exchange on Ben-E-Bikes.
•bar ends must not be used under no circumstances. Carbon handlebars are not released for the use in
combination with bar ends!
•defective parts must be replaced with original spare parts from AMPERUM GmbH!
•Only have accessories installed, which corresponds to the country-specific regulations for road traffic
(see chapter "Notes >> Road Traffic")..
•Only install accessories that meet the specifications and quality of the original equipment.
RESIDUAL RISKS
The use of a BEN-E-BIKE is subject to the following unpredictable residual risks despite the observance of all
warnings:
Risk of accidents and injury
•Due to curiosity your child may become distracted and lose focus on the road traffic.
•Dangerous situations may occur due to misbehaviour of other road users.
•Due to the unpredictable road conditions, accidents and injuries are possible, e.g. in case of icy conditions.
•Unpredictable material defects or material fatigue may lead to component failures.
•Unpredictable manufacturing defects of components may cause components to fail or break.

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AMPERUM GmbH
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INTENDED USE
Neither the manufacturer nor the retailer warrant for damages caused by improper or incorrect use.
The BEN-E-BIKE is intended for transporting a single person primarily on paved roads and paths. The BEN-E-BIKE
can also be used on gravel and unpaved roads. Jumps and drops up to a height of max. 15cm are allowed.
Make sure that the maximum weight of the rider including baggage does not exceed the indicated weight on the
top tube and seat tube. This maximum weight must be maintained under all circumstances!
Keep in mind that driving manoeuvres as shown on images on our website may look
simple, but actually require a lot of training and experience.
Not all images on our website show a BEN-E-BIKE during intended use. We test our bikes in a controlled manner
even in case of overloading, thereby accepting premature material fatigue. Under no circumstances should this
lead to the same driving manoeuvres with your own BEN-E-BIKE!
•the warranty expires in the event of improper use of the BEN-E-BIKE (see chapter "Warranty“).
•a BEN-E-BIKE is intended for the exclusive use of children whose body size is set to the correct sitting
position..
•a BEN-E-BIKE is intended for private use only. For commercial use, a reduced warranty period of 12
months applies.
•a BEN-E-BIKE is not intended for "abnormal" use, e.g. for racing and competition events (see chapter
"Warranty").
•a BEN-E-BIKE is not intended for use in combination with a child seat.
•a BEN-E-BIKE is not intended for the installation of an optional luggage rack.
•bar ends must not be used under no circumstances. Carbon handlebars are not released for the use in
combination with bar ends!
•the assembly of a child trailer or other trailer is not allowed.
•a BEN-E-BIKE may only be used for free rolling. Do not clamp the BEN-E-BIKE in an exercise machine or
similar device.
For the intended use of a BEN-E-BIKE on the road, your child needs to know and understand the country-specific
regulations. For the intended use of a BEN-E-BIKE in road traffic, it must comply with the country-specific
regulations (see chapter "Notes >> Road Traffic"). Your child may only use the BEN-E-BIKE as described in this user
manual. Any other use is considered as improper use and may cause accidents, personal injury or property
damage.
Keep in mind: a BEN-E-BIKE is not a toy for children.

9 BEN-E-BIKE INSTRUCTION MANUAL
AMPERUM GmbH
Stuttgarter Str. 72
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www.ben-e-bike.net
[email protected]m
ADVICE FOR USE IN ROAD TRAFFIC
For the use of bicycles in general and pedelecs in particular special regulations apply in many countries. Please
refer to the applicable traffic regulations of your country or region, e.g. in bicycle associations or the Ministry of
Transport. Inform yourself constantly about changed contents of the valid regulations.
•Always explain to your child new contents of the current regulations.
•Only let your child drive alone in public road traffic, if it is permitted by the legal regulations and if you are
convinced that your child can participate in the traffic.
•Explain to your child which lane it is allowed to use with a BEN-E-BIKE. In many countries this is the
sidewalk for young children.
•Teach your child to drive defensively or cautiously and to consider other road users.
•Teach your child to drive so that nobody is harmed, endangered or unnecessarily disabled or harassed.
Many regions offer courses for children. Here, your child can playfully learn driving and correct behaviour in
traffic.
Regulations for lighting
To ride on the road, bicycles must be equipped with headlamps, taillights, cat eyes on pedals and wheels, a white
front reflector and a red rear reflector. All these lighting components must meet the country-specific
requirements and be marked with an appropriate test mark.
We explicitly point out that all BEN-E-BIKES ex works are not equipped with the above-mentioned, required
components and may not be used in public road traffic without prior retrofitting.
Further regulations
To ride on the road bicycles must be equipped with two independent brakes and a bell.
Bicycle helmet
•Have your child ride only with an appropriate bicycle helmet that has been tested in accordance with DIN
EN 1078 and comes with a CE mark.
ADVICE FOR OFFROAD USE
Has your child ever ridden a mountain bike? Off-road driving requires special concentration, fitness and exercise.
Your child should gradually familiarize himself with a BEN-E-BIKE in an inanimate place. In some regions special
technical courses for children are offered, in which off-road driving can be practiced.

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FURTHER ADVICE FOR PROPER USE
1 WEAR
Excessive wear and material fatigue as well as loosened screw joints increase the risk of accidents and injuries.
•Regularly check the condition of all components (see chapter "Maintenance").
•If you detect any parts with cracks or colour changes you should contact your specialized dealer
immediately
•Have your BEN-E-BIKE inspected regularly by your dealer, especially during heavy use.
•Do not let your child use the BEN-E-BIKE if you notice excessive wear or loosened screw joints.
Like all mechanical components, bicycle components are wearing parts. High stress and incorrect use significantly
increases wear. Different materials have individual characteristics in terms of wear.
•consult your dealer if you have any questions regarding wear parts of a BEN-E-BIKE.
•check the condition of all wear parts regularly (see chapter "Before every ride" and "Maintenance").
•Maintain wear parts regularly (see chapter "Cleaning and care").
Typical wear parts
The following wear parts wear out due to the intended use and are therefore excluded from warranty (see chapter
"Warranty"):
•wheels, tubes and tyres
•chain drive (chain, chain sprocket, cassette, derailleur, etc.)
•bottom bracket
•head set
•gear shift cable and liner
•brake pads
•handlebar grips
Operational wear
The following wear parts can wear out due to aging or intensive stress:
•frame
•handlebar and stem
•fork
•the seat post may be scratched when being inserted or extracted, but this does not have any impact
neither on functionality nor longevity

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Brake wear
The brake pads are subject to constant wear. Maintain and check the brakes regularly (see chapter "Before each
trip >> Inspection instructions" and "Maintenance >> Brakes").
Wear of spokes and gear shift cable
Spokes and gear shift cables expand with use and must be adjusted or replaced when worn.
•check the spokes regularly (see chapter „Maintenance ›› Rims and spokes“).
•check the gear shift regularly (see chapter „Maintenance ›› Gear shift“).
2 MAXIMUM DRIVER WEIGHT
The driver weight specified on the frame of the BEN-E-BIKES may under no circumstances be exceeded (not even
briefly). See note on the seat tube and the top tube! The maximum allowed weight is based on the weight of the
rider including clothing, protective clothing and possibly a backpack.
3 LUGGAGE RACK
All Ben-E-Bikes of the model year 2020 have mounts for a luggage rack on the rear dropouts and on the seat stays.
Please note that luggage on the luggage rack moves the centre of gravity of the bicycle upwards and can therefore
have a significant impact on driving behaviour.
The maximum permissible load on a retrofitted luggage rack must not exceed 5 kg!

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4 LUGGAGE
Incorrectly transported luggage can get into the spokes while driving and lead to falls. Incorrectly secured luggage
can fall and endanger your child and other road users..
•Explain to your child that there are no objects to hang on the handlebar, e.g. shopping bags
•Explain to your child that it is not allowed to attach objects to the frame.
•Have your child only transport items in a suitable backpack
•Explain to your child that it is necessary to adapt the driving style while riding with luggage.
5 THEFT PROTECTION
•Explain to your child how a BEN-E-BIKE can be effectively protected against theft.
•Give your child a sturdy chain- or U-lock that allows the BEN-E-BIKE to be fastened to a fixed object, such
as a bicycle stand.
6 TRANSPORT
If you cannot safely transport the BEN-E-BIKE in the boot of your car, please use a suitable bicycle carrier.
Incorrect mounting or the use of unsuitable bicycle carriers may damage the BEN-E-BIKE.
•Only use approved bicycle carriers that allow the BEN-E-BIKE to be transported upright.
•Inform yourself about the use of bicycle carriers, e.g. contact your dealer.
•Secure the BEN-E-BIKE carefully so that it cannot slip.

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7 DISPOSAL
•Read the explanation of the symbols printed on the BEN-E-BIKE.
•If you have any questions about disposal, please contact your specialist dealer.
Packaging
•Dispose of the packaging according to type.
Lubricants and care products
Lubricants and care products must not be disposed together with household waste or in the sewage water system
or in nature.
•Dispose of lubricants, cleaning agents and care products via a collection point for special waste.
•Read the instructions printed on the packaging of the products used.
Tires and tubes
Tires and tubes are no household waste. Dispose them at a collection station in your city or community.
Bike
•Dispose the BEN-E-BIKE as electronic waste at a collection station in your city or community.
Battery
•Never dispose a no longer usable battery in the household waste. Batteries in general and lithium-ion
batteries in particular must be disposed separately. The battery can be easily returned to your dealer, who
then takes care of the disposal for you free of charge.

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NOTES ABOUT THE BRAKES
Each BEN-E-BIKE is equipped with independent brakes on the front and rear wheels. All BEN-E-BIKE models are
exclusively equipped with disc brakes.
Disc brake:
The braking force is transferred by pulling the brake lever via a hydraulic hose to the callipers. When air enters the
system, the braking force can be reduced or lost completely.
• Check the disc brakes regularly for wear and function (see chapter "Before every ride" and "Maintenance").
Worn brake pads can lead to fusing of the brake pad and brake rotor during heavy braking. The wheel can
thereby block and cause an accident. Have the disc brakes checked by your dealer at least once a year.
•Wetness changes the braking behaviour of the disc brake. Let your child practice braking in wet conditions
apart from road traffic. Explain to your child that it has to drive slowly when wet.
NOTES ON CHAIN DRIVE
The chain drive consists of a chainring on the crank and a cassette with ten sprockets on the rear wheel. The gears
are switched via a trigger switch on the right side of the handlebar (see chapter "Operation >> Gearshift"). The
smaller the sprocket on the rear wheel, the higher the gear you choose and your child will experience a low
cadence. The larger the sprocket on the rear wheel, the smaller the gear you choose and your child will pedal at a
higher cadence. Explain to your child that on ascents, he / she needs to shift to a larger sprocket to be able to
pedal more easily and choose a smaller sprocket in the plane or on descents.
•If you are unsure about operating the gear shift, consult your dealer.
•Explain to your child the correct operation.
•Try to get your child accustomed to high cadences (90 - 100 rpm). A high cadence tires muscles much less
than a low cadence. Additionally the risk of "muscle soreness" decreases significantly.
In some gears, the inevitable skew of the chain leads to increased wear on the chainring, sprockets and chain. It
is likely possible that in 1st gear the chain touches the chain guard ring on the front chainring.

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NOTES ON THE LIGHTING
The motor controller of the BEN-E-BIKE is equipped ex-factory with a 6 volt output, which can be used to power an
optional lighting system. So It is therefore not mandatory to use battery-powered headlamps or to install a
dynamo. The 6Volt output is switched on / off by pressing the rocker (arrow up) on the OLED display (see
"OPERATING THE OLED DISPLAY" in a later chapter of this manual).
A 2-pin connection cable with a length of 15cm is also included in the BEN-E-BIKE accessory pack. The "positive
pole" of the cable is the red cable.
BEN-E-BIKE also offers lighting kits, consisting of a front and a rear light which you can order together with the
bike.

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BEFORE EVERY RIDE
The BEN-E-BIKE is exposed to constant vibration during use. As a result, excessive wear can occur or it can
loosen screw joints.
•If in doubt, ask your dealer to show you how to test the BEN-E-BIKE.
•Check the BEN-E-BIKE before each ride according to the test instructions.
•Use the BEN-E-BIKE only if you do not notice any damage.
•Only use the BEN-E-BIKE if there is no excessive wear and all screw joints are fastened properly.
•Thoroughly check the BEN-E-BIKE for damage and excessive wear before your child uses the bike (see
chapter "Test Instructions").
•Explain to your child that the BEN-E-BIKE should not be used if it is damaged.
TEST INSTRUCTIONS
Check before every ride:
•that the quick release on the front wheel is closed and the front wheel is properly fixed.
•whether the tires are in good condition and sufficiently inflated. Let both wheels turn to check the
concentricity.
•the condition of the frame and components.
•look at all components and watch out for deformations, cracks and discoloration.
•Grasp the handlebar, pedals and saddle one at a time and check that all components are properly fixed.
•the function of the brakes by pulling the brake levers and making sure that the wheel cannot be spun if the
brake is applied. It should be impossible to pull the brake levers completely to the handlebars. Watch out
that there is neither any brake fluid on the brake levers nor callipers.
•the function of the lighting and bell (if retrofitted).
If the front quick release skewer is not properly tightened and thus the clamping force is too low, the front
wheel may come off. There is then acute danger of an accident!
The quick release skewer basically consists of the lever with eccentric for closing the quick release and the opposite
clamping nut, with which the preload is adjusted.

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PROCEDURE FOR SAFELY FASTENING THE FRONT WHEEL
•Open the quick release.
•Move the lever towards the final clamping position. At the beginning of the closing travel to about half of
the lever travel, you hardly need any force to move the lever.
•During the second half of the closing travel, the closing force has to increase significantly. For the "last
centimetre", you will need a lot of force to completely close the lever.
•The final position of the lever should be parallel to the wheel. The lever must rest against the fork so that it
cannot be opened unintentionally.
•Check the seat by trying to turn the closed lever.
•If the tension lever can be turned, the secure attachment of the front wheel is not ensured. You have to
open it again and increase the preload. To do this, turn the nut on the opposite side in a clockwise
direction.
•Repeat the above mentioned procedure and check the seat again. If the clamping lever can no longer be
turned, the tensioner clamps correctly.

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PRIOR YOUR FIRST RIDE
In the event of unexpected behaviour of the BEN-E-BIKE, your child may not be able to concentrate on the road
traffic, e.g. when braking or shifting the gears. There is an increased risk of accidents and injury.
•Do not leave your child on the road with the BEN-E-BIKE unless he/she is familiar with the behaviour of the
bike and its operation.
After the first kilometres with a new bike, gear cables and spokes can extend or screw joints may loosen.
Therefore the function of individual components on the BEN-E-BIKE could be affected. Contact your dealer for a
short inspection after the first 200 km.
Your BEN-E-BIKE should have been fully assembled and adjusted by your dealer. If you have mounted the BEN-E-
BIKE by yourself and do not have the appropriate technical knowledge and tools, this may have an effect on the
warranty. BEN-E-BIKEs have been explicitly made ready for the final assembly by a specialist dealer.
The final assembly and adjustment by a specialized dealer is a precondition for full warranty (see chapter
"Warranty").
•If the BEN-E-BIKE has not been set up for your child, have it adjusted by your specialist dealer (see chapter
"Settings >> Seating position").
•Get yourself familiar with the BEN-E-BIKE before you drive together with your child for the first time and
explain all features of the bike to your child.
•Practice with your child away from road traffic so that he / she can get used to the driving characteristics of
the BEN-E-BIKE
•Have your child practice braking at low speed (see chapter "Notes >> Brake" and "Operation >> Brake").
All BEN-E-BIKES are delivered so that the front brake is operated with the left brake lever. This may be
differ from other children's bicycles. Your child may not have to get used to the new arrangement, as
careless operation of the front brake can lead to a fall (by blocking the front wheel or a rollover).
•Disc brakes need to be used several times before they deliver maximum brake force.
•Finally the brakes of the BEN-E-BIKES may deliver way stronger brake force than the brake of a previously
used children's bicycle. Your child may need some time to get used to this extra of brake power.

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•Have your child practice emergency braking.
•Practice with your child how to handle the gear shift until he / she can operate the gear shift so that its
attention is not affected (see chapter "Operation >> Gear Shift").
•Do not allow your child to drive alone unless you can answer for it..
AFTER A FALL
After a fall or accident it hidden damage to the BEN-E-BIKE may arise, e.g. hairline cracks. Components made of
carbon, which have suffered a shock impact, as well as bent parts made of aluminium can break suddenly. It is not
allowed to straighten bent parts because those are then prone to break or fail. This is especially true for the fork,
the handlebar, the brake levers, the crank, the seat post and the pedals. When in doubt, replacing these parts is
always a better choice because your child's safety is of paramount importance.
•Have the BEN-E-BIKE inspected by your specialist dealer for possible damage after a serious fall or
accident.
•Do not straighten bent components.
•Damaged or bent components should be immediately replaced for original replacement parts by your
specialized dealer.
•Don't use the BEN-E-BIKE if any defect can be detected
•After minor falls, check all components of the pedelec, e.g. when the BEN-E-BIKE has toppled
•Make sure the chain is still in proper position on the front chainring and the sprockets of the rear cassette.
If the wheel has toppled to the right side, you should check the functionality of the derailleur. A bent rear
derailleur or a bent hanger can cause the rear derailleur (or the chain) to get into the spokes. There is then
acute danger of falling!
•In case of any doubt, contact your specialized dealer!
SPECIAL FEATURES OF CARBON MATERIALS
The carbon material of the handlebar offers some special features compared to other lightweight materials. It is of
major importance to be aware of these characteristics so that you can always rely on it. Carbon - if treated
properly - allows for extremely strong and highly resilient components with very low weight. A very special
feature, however, is its brittleness. Components made from carbon typically do not deform under heavy load,
although the internal structure may already be damaged. The fibres can in extreme cases separate from one
another, means the so-called delamination occurs, whereby the strength of the component decreases significantly.
Any overstressing that has already damaged the internal fibres is not indicated by any residual bending as this
happens with steel or aluminium components. For this reason, a carbon part can fail after an overload in
subsequent use, which can lead to the fall with unpredictable consequences. Have the affected component
inspected by your specialized dealer after a heavy fall!

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•Pay attention while driving - if the carbon handlebar makes any crackling noises, this can be an indication
of an imminent material defect. Stop using the BEN-E-BIKE and contact your specialized dealer.
•For your child's safety - never have the carbon handlebar repaired!
•Immediately replace a damaged component.
•Carbon components must never come into contact with high temperatures (> 100 ° C), such as those are
required for powder coating or similar. The heat could destroy the component. Also avoid storage of the
BEN-E-BIKE near sources of heat.
•Never mount so-called "bar ends" on the carbon handlebar.
•Do not shorten the carbon handlebar.
•Always pay attention to the correct torque of all screws of the stem or the brake handles (max 3 Nm). Too
high torques can damage the handlebar. In combination with carbon mounting paste, even very low
clamping forces are sufficient for secure fastening.