SiFly eFoil User manual

●USER MANUAL
Version from: 04.07.2022
●Introduction
Congratulations on the purchase of your new SiFly eFoil! The eFoil is an innovative battery-
powered electric surfboard that allows users to fly above water virtually silently and emissions-
free. Like all watercraft, the SiFly eFoil requires riders to take specific precautions while using it.
For this reason, we urge you to read through the User Manual carefully – in particular, the
safety information and the instructions for assembly, set up and use before operating.
It is important to note that SiFly AI Ltd. shall not bear any legal responsibility and liability
against damage to the user, their property or third parties due to use of its products. By
handling a SiFly product, you agree you are doing so at your own risk.
So get ready to fly into a fascinating new world! We wish you many hours of fun with SiFly!

●Table of Contents
●USER MANUAL 1
●Introduction 1
●Table of Contents 2
1. Safety and Disclaimer 4
1.1 Warning 4
1.2 Proper Use 4
1.3 Riding Safely 4
1.4 SiFly PowerCell LR 5
1.4.1 Charging 6
1.4.2 Storage 6
1.4.3 Transportation 6
1.4.4 Disposal 6
2Warranty Conditions 7
2.1 Warranty coverage period 7
2.2 14-day Free Return policy 8
2.3 NOT covered by the SiFly warranty policy 8
2.4 How will SiFly honor your warranty? 9
3Service 9
4Included in delivery 10
5Getting Started 11
5.1 Unpacking the battery 11
5.2 Charging the Battery 11
5.3 How to Assemble your eFoil 12
5.3.1 Inserting the mast 12
5.3.2 Installing the wings 12
5.3.3 Installing the battery 13
6How to use the Remote controller 14
6.1 Charging 14
6.2 Operation of the Remote controller 14
6.3 Pairing 15
6.4 Riding 16
6.5 Backlight 18

6.6 Calibration 18
7Mobile app 19
oCreating an account 19
oAdding your device 21
oSessions 24
oTimed sessions for boards in business accounts 26
7.1 My SiFly Cloud WebApp 26
8How to еFoil 30
8.1 Get to know your board 30
8.2 Foiling on all fours 31
8.3 Foiling upright on your knees 31
8.4 Stand up on the board 32
8.5 Foiling upright 32
9Maintenance and Storage 33
10 Troubleshooting 33
11 Technical specifications 34
11.1 Boards 34
11.2 Hydrofoils 35
11.3 Battery 35
12 EC - Declaration of Conformity 35
13 Imprint 36

1.Safety and Disclaimer
All information within this guide is subject to change at the discretion of SiFly. For the latest
product details and our complete USER MANUAL visit our website www.sifly. global.
1.1 Warning
All SiFly products conform with the current safety standards and are especially designed to
operate safely.
Nevertheless, always wear an impact vest and helmet and ride far away from swimmers and
other watercraft. Never ride further away from shore than you can swim back and always let
somebody know of your plans.
Children under 12 years of age should ride under adult supervision.
Do not use incompatible components or alter this product in any way different from the
instructions and documents provided by SiFly.
Use of the SiFly eFoil by pregnant women is not permitted.
Never use the SiFly eFoil while under the influence of alcohol, medication or drugs.
Use the SiFly eFoil only if you are completely healthy.
It may be necessary to obtain a license to use a SiFly eFoil or register it in certain areas. Get
informed about the local regulations and legislations in your region before using it.
1.2 Proper Use
Generally, the eFoil can be used in areas where the use of watercraft powered by combustion
engines is not permitted. However, you should not ride wherever the use of watercraft or
electric-powered watercraft is prohibited by local laws, community regulations, nature
conservation laws or other provisions.
Before using the board, always inquire about the local regulations which may be in force in the
area where you wish to ride. SiFly does not assume any responsibility for obtaining such
information.
1.3 Riding Safely
Take your time to learn how to use the SiFly eFoil properly. We recommend learning to eFoil
with an instructor or at an authorized SiFly school. If you don’t have access to any of those,
please, follow the steps in our How to eFoil video to ensure you learn the basics safely.

Always climb on the board from the side and make sure you keep your hands and feet away
from the sharp edges of the wings.
Only attempt difficult manoeuvres such as high speed turns after you have mastered the basics.
Limit your speed so that you are in complete control of the SiFly eFoil at all times. Gradually
increase the power while operating the craft so that you can familiarise yourself with the
handling of the SiFly eFoil. It is important that you are in control of the board at all times.
The SiFly eFoil is not equipped with lights and, for this reason, is not suitable for riding at night.
Do not ride the craft after sunset or before sunrise.
Do not operate the SiFly eFoil in bad weather or impaired visibility. Never use the SiFly eFoil
during a thunderstorm!
The SiFly eFoil should be used in sheltered waters such as bays, lakes, rivers and canals.
Make sure you are accompanied by others or under the constant supervision of another person
who can provide immediate assistance in case of emergency. Arrange to have a boat
accompany you if you wish to operate the craft further away from shore.
Do not ride in shallow waters with depth of less than 1 m, crowded areas, rocky banks and in
extreme weather conditions. Be very careful of rocky bottoms, reefs and stones. Stay away
from the immediate shore, and never attempt to steer the SiFly eFoil onto the beach, shore or
onto land of any kind.
Stay away from aquatic plants and floating objects such as pieces of string, rope, plastic or
wood to prevent the motor, propellor, wing and stabiliser from being damaged or their function
inhibited.
Make sure that no sand, dirt, stones, rope or other foreign objects get into the propellor and
duct. Never remove foreign objects from the propellor and/or duct while the board is switched
on.
Always supervise children to ensure that they do not attempt to reach into the duct. The
rotating propellor may cause injury!
1.4 SiFly PowerCell LR
The battery casing of the PowerCell is durable and completely watertight. Despite that, never
submerge the battery in water. If you have subjected it to salty water or debris, turn it off by
removing the magnet key, wait for the LED to switch off and gently clean it with a damp cloth.
Never open the battery casing. Never drop or puncture.Never burn the battery.

1.4.1 Charging
Always charge the SiFly PowerCell LR under supervision and follow the instructions contained in
this User Manual.
Only use chargers supplied by SiFly. Third party chargers may not be compatible with your
battery and could damage it.
Never use the charger if the connectors are damaged.
Ensure that there is no dried salt, water or debris on the contacts of the connection port or
connector. Salt deposits can inhibit the flow of electricity during charging and cause electrical
contacts to overheat, resulting in irreparable damage to the contacts or even fires affecting the
contacts or cable.
While charging, do not place any objects on the battery or charger to ensure that heat created
during the charging process is dissipated properly. Ensure that air can circulate freely.
Carry out charging in a place in the shade that is dry, cool and well ventilated.
Caution! The charger and connector may get hot while charging. Let the charger and
connectors cool down before you attempt to touch them.
Always disconnect the mains plug from the mains before you touch the charger or connector
after charging.
1.4.2 Storage
Never expose the SiFly PowerCell LR to high temperatures (max. 60 °C / 140 °F) caused by
external heat sources, direct sunlight or by storage inside a closed motor vehicle.
Store the SiFly PowerCell LR in a place that is cool, dry, well ventilated and frostproof, and
ensure that it is protected from irreparable total discharge.
Never store the battery at temperatures below 0 °C / 32 °F. Failure to do so may damage the
cells and reduce the battery life.
1.4.3 Transportation
Never transport a fully charged SiFly PowerCell LR by aircraft or over long distances. The battery
should only be partially charged during transport (maximum 30% capacity).
The PowerCell LR is UN 3480 certified and is considered a dangerous good. Always revert to a
shipping specialist when transporting a SiFly battery. You will be required to present a Material
Safety Data Sheet (MSDS) prior to transportation. For further information, please contact SiFly
or your local distributor.
1.4.4 Disposal
Never discard the battery or battery cells as household waste or into a fire or water.
Used batteries (batteries which are damaged or no longer provide adequate power) are to be
disposed of in accordance with statutory regulations in order to protect the environment and
health.
End users are obliged by law to return used batteries.

Powercell LR batteries which are used up or damaged may be returned free of charge to SiFly
for proper disposal and recycling or at other battery recycling sites.
For further information on Disposal, please see the battery MSDS
2Warranty Conditions
Sifly or any authorized reseller warrants that the products sold are free from manufacturing
defects and damages for the coverage period stated below.
To file a claim, you should contact our support team at [email protected].
SiFly might request pictures, videos or any other files that would help process the warranty
claim. You will have to present the original invoice for the purchase of the product.
SiFly will cover the reasonable costs for shipping а defect product to and from the nearest
service center. If after evaluation of the claim a fault is found due to misuse, SiFly will ask you to
pay the shipping cost towards the service center and back as well as the repair costs, if they are
accepted.
You can make a Warranty claim if you are the original or secondary owner of the product. The
warranty is transferable. Even if you are not the original owner and have not purchased directly
from us or from an authorized SiFly reseller you are entitled to make use of the SiFly Warranty,
if you are in possession of the original invoice for the purchase.
2.1 Warranty coverage period
Within EU
The warranty of the SiFly board is valid for 2 years in case of а manufacturing defect.
The warranty of the battery is valid for 2 years or 300 battery cycles – whichever event occurs
first.
The warranty of the SiFly eFoil is valid for 2 years or 300 hours of motor function – whichever
event occurs first.
The wings, remote controller and charger are warranted for the period of 2 years.
Outside of EU
The warranty of the SiFly board is valid for 1 year in case of а manufacturing defect.
The warranty of the battery is valid for 1 year or 300 battery cycles* – whichever event occurs
first.
The warranty service of the SiFly eFoil is valid for 1 year or 300 hours of motor function –
whichever event occurs first.
The wings, remote controller and charger are warranted for the period of 1 year.
Note: A battery cycle involves consecutive or multiple partial discharges of a total of 100%
capacity.

2.2 14-day Free Return policy
If you have purchased a Sifly product in the EU for non-commercial use, you have the right to
return it within 14 days of delivery, provided that the product is in the original package and is in
near perfect condition as expected. The shipping costs are covered by the customer. Sifly will
reimburse the purchase within 30 days.
2.3 NOT covered by the SiFly warranty policy
The following events are not covered by the warranty:
Damage caused by normal wear and tear
Punctures and/or previously repaired damage to the board
Damage due to excessive heat exposure including direct sunlight or extended amount of time
left in a car on a hot day
Damage due to improper care, usage, storage, or operation in unsafe locations, and/or use in
any other unsafe conditions not in accordance with the user manual
Damage due to abuse, misuse, accidents, or collisions of the eFoil against hard objects or in
shallow waters
Damages due to climbing on and off the eFoil while it is not floating and is sitting on the bottom
in shallow waters or on solid ground
Damage due to failure to properly maintain the SiFly eFoil and its components in accordance
with the instructions found within the User manual
Damages due to disassembling the motor, ESC, Board controller units, the remote controller,
charger or battery
Damages due to unauthorized modifications in the eFoil or use of 3rd party components,
including, but not limited to, modification of its internal circuitry, components, battery, battery
cells, connectors, connector cables, etc.
Damages due to unauthorized repairs and maintenance
Damage or defects caused by usage of the SiFly eFoil after a warranty issue is reported, or when
a customer should have reasonably made a warranty claim
Personal injury or death, property damage or financial loss, however caused
Damage caused by anything other than manufacturing defects
Damage caused by failure to install a critical firmware update, when prompted to do so by the
mobile app, and using the product
Damage in the battery casing or internal components due to sustained physical impact, drop or
puncture
Exposure to abnormal conditions, including prolonged storage at temperatures beyond the
recommended range. For additional information see Maintenance and Storage
Usage of unauthorized 3rd party parts and modifications, including 3rd party chargers,
connectors, and connector cables.
Usage of the battery for unauthorized purposes and with unauthorized devices
Unauthorized disassembly of the battery

Seals leading to ingression of water in the battery compartment are not a major concern and
are not a reason for a warranty claim.
Note: Firmware updates can be critical or recommended. Critical updates must be installed
when pushed to the eFoil for the warranty to be valid.
2.4 How will SiFly honor your warranty?
When a Warranty claim for a defect part is accepted, SiFly will take one of the following actions
within 60 days:
1. Send you a replacement part;
2. Repair the defective part; or
3. Pay for the cost of repairing the part or supplying the replacement part by the customer.
All information within this guide is subject to change at the discretion of SiFly. For the latest
product details and our complete Warranty Conditions visit our website www.sifly.global
3Service
For service or repairs, please contact SiFly:
●by e-mail at [email protected]
(Mon-Fri, 9:00 a.m. to 6:00 p.m. CET, except on public holidays) or your local dealer.
Please have the following information ready:
●Model name
●Board serial number
●Hydrofoil serial number
●SiFly PowerCell LR serial number
●Service / error messages (if present)
●Exact description of the malfunction or damage
A specialist will assist you in identifying the cause of the error and take further action if
necessary.
Never open the electronics box or motor by yourself. Repairs and maintenance work on the
SiFly that go beyond the procedures described in this User Guide may only be carried out by an
authorised technician.
Never alter or modify any part of the SiFly eFoil, PowerCell LR battery, Remote control or
charger. If you detect any damage to the SiFly eFoil, immediately stop operating the device and
remove the board from water to prevent further damage. Contact SiFly or your local distributor
immediately.
Only use replacement parts and accessories supplied by SiFly.
If subjected to damage, the composite construction boards can be repaired by your local
surfboard repair specialist. The inflatable models may be repaired using the included repair kit.

4Included in delivery
The following equipment is included in the standard delivery of the SiFly eFoil:
Box 1: SiFly Board
●SiFly Easy/Free/Pro Rider Board Bag
●SiFly Easy/Free/Pro Rider board
or
●SiFly Easy Rider Inflatable Board Bag
●SiFly Easy Rider Inflatable board
●Air Pump
●Hard Central Unit
or
●SiFly Free Rider Softtop Board Bag
●SiFly Free Rider Softtop board
Box 2: SiFly PowerCell LR rechargeable battery
●SiFly Powercell LR Transportation Bag
●SiFly Powercell LR battery
Box 3: Hydrofoil, Wings, RC set and Charger
●Hydrofoil Transportation Bag
●Hydrofoil Unit: 55 cm or 75 cm depending on your choice
●Smart charger for charging the PowerCell LR
●Wing(s): Cruiser 1900 or Cruiser 1300
●Stabiliser(s): CR 340 or CR300
●Prop guard cap
●RC set
●Remote Controller
●RC Wireless Charger
●Charging cable and adapter for charger
●Screws
Wing
Front Screw
Rear screw
Cruiser 1900
1x M6x40
2x M6x35
Cruiser 1300
1x M6x35
2x M6x30
Cr340 & Cr300
1x M6x25
1x M6x20
Foil
Screw
Mast plate
4x M6x25
●Hex Key
●Battery magnetic key
●TefGel
●Dielectric Gel

●Plastic shims for stabiliser
●Front wing plastic pad
●User Manual
Check to make sure that all components have been included in delivery. Should this not be the
case, please contact SiFly AI Ltd. immediately.
5Getting Started
5.1 Unpacking the battery
Take the PowerCell LR rechargeable battery and the battery charger out of the packaging, and
place them on a dry surface. Do not throw away the packaging. It can be used later (for
example, when sending the device in for service).
The PowerCell LR is delivered in a partially charged state. To avoid total discharge, you should
charge the battery immediately after delivery. Use only the charger supplied by SiFly. Charge
the battery after each use and during longer periods of storage.
5.2 Charging the Battery
To charge the PowerCell LR, proceed in the following steps:
1. Place the battery and charger on a flat dry surface that will not damage it.
2. Dry the area around the connection port using a soft, clean cloth.
3. Check that the insides of the connection ports are perfectly clean and dry.
4. Check that each of the two connectors of the battery charger are perfectly clean and
dry.
5. Attach the black power cable by pushing the plug connector onto the black socket
connector of the battery until you hear a click. The positive (red) connector has a unique
key so that it can’t be attached to the wrong terminal. Align it sideways to the battery
with its top pointing outwards and push it in until you hear a click.
Note: To remove the connector plug, push the little button on its side and pull it out gently.
6. Plug in the charger in the network and place the magnet key on the magnetic key pad.
The battery will start charging, indicated by the LED light flashing every second. The
following table illustrates the colour – state of charge relationship:
Capacity range
0%-15%
16%-30%
31%-99%
100%
Colour
flashing RED
flashing YELLOW
flashing GREEN
solid GREEN
Once the capacity is full, the LED light will show solid green, blinking only once in 5
seconds.
7. To complete the charging process, first remove the magnet key from the battery, then
unplug the charger from the socket and finally pull the connectors from the connection
ports on the battery. Never attempt to remove the connectors by twisting or pulling on
the cable. Always hold on to the base of the connectors in hand.

Caution! The charger and connectors may heat up while charging. After you have finished
charging, let the charger and connectors cool down before you touch them.
Note: Charging of the battery is controlled by the internal battery management system (BMS).
If the temperature of the battery exceeds 44°C / 111 °F, the BMS temporarily stops the charging
process of the PowerCell LR. The charging process will continue as soon as the temperature of
the battery falls below 42 °C / 108 °F.
5.3 How to Assemble your eFoil
For your safety and in order to maximize your eFoiling experience, make sure you watch our
step by step guide to correctly assemble your eFoil.
5.3.1 Inserting the mast
1. Lay the board upside down on its board bag or a soft surface. Make sure that there are no
debris or sand on its bottom and in the cable tube.
2. Use the provided teflon gel and apply it in the stainless steel inserts in the board to prevent
oxidation.
3. Lubricate the O-ring at the mast plate with the provided electrolyte gel.
4. Carefully run the connectors through the cable hole one by one, ensuring that no cable is
stuck and compressed in the process.
5. Gently push the hydrofoil in its place with a slight twisting motion.
6. Tighten it diagonally with the provided screws: 4x M6x25.
5.3.2 Installing the wings
1. Apply some teflon gel to the 5 threaded inserts holding the wings in place.
2. Tighten the wings with the corresponding screws.
Wing
Front Screw
Rear screw
Cruiser 1900
1x M6x40
2x M6x35
Cruiser 1300
1x M6x35
2x M6x30
Cr340 & Cr300
1x M6x25
1x M6x20

Note: To adjust the riding balance of the foil, you can use the provided plastic shims. Positive
numbers will increase the front foot pressure and will generally make the foil more stable.
Negative numbers will have an opposite effect and allow for greater speed and
manoeuvrability.
If you want to remove the propellor guard, you have to remove the propellor first.
1. Unscrew the safety nut (M8), gently pull the propellor out of the shaft and remove the
pin.
2. Unscrew the screws (M4х25) holding the propellor guard and replace it with the
alternative cap.
3. Install the propellor by following the steps in reverse order.
Note: It is a good idea to carry the eFoil and battery apart closer to the water before assembling
them. If you are alone, you can grab the handle on the board’s rail with one hand and hold the
mast or fuselage with the other. Alternatively, you can hold the top of the hydrofoil at the mast
with one hand over your shoulder.
DO NOT hold or carry the eFoil by the stabiliser rod!
5.3.3 Installing the battery
1. Turn the eFoil upright, making sure that you don’t put pressure on the tips of the wings
while doing so.
2. Open the lid of the battery compartment.
Note: Make sure that the compartment and the battery are both clean and dry. The rubber
gasket and lid surface should be free from sand and debris to prevent water ingression.
3. Lubricate all connectors with the provided dielectric gel to avoid oxidation.
4. Locate the communication connectors. Align the arrows on both ends and push them
together. You will hear a clicking sound when the connectors are locked. To detach
them, rotate the grey ring in the shown direction and pull them apart.
Note: If you are not going to disassemble the efoil between sessions, do not detach the
communication connector to prevent water ingression. If you ever get the pins wet, wait until
they are completely dry before connecting them to prevent pin oxidation.
5. Carefully place the battery into its compartment and lock it by rotating the knob 90 deg.
6. Attach the black power cable by pushing the plug connector onto the black socket
connector of the battery until you hear a click.
The positive (red) connector has a unique key so that it can’t be attached to the wrong
terminal. Align it sideways to the battery with its top pointing outwards and push it in.
Note: To remove the connector plug, push the little button on its side and pull it out gently.
7. Close the lid and lock it in place with the latches. The magnet incorporated in the lid will
activate the battery and that will turn on the system. Once you hear the beeping tone
from the motor, your eFoil is ready to ride.
Caution! Never spin the propellor for more than approx. 2 seconds out of the water! The seals
of the motor and the hard-coated motor shaft are designed exclusively for use in the water. The
generated heat can cause irreparable damage to the water seals and compromise the motor.

Note: Use the mobile app for Android and iOS to pair the remote control with your board for
the first time. For further information, see Mobile app.
6How to use the Remote controller
6.1 Charging
The Remote controller is charged wirelessly.
To charge it, connect the supplied Wireless charging pad with the provided cable and adapter.
Simply place the Remote controller on the pad and it will start charging.
It will turn on automatically and the battery indicator on the top left corner of the display will
show the battery state.
Note: After 5 minutes of no user input or motion detection, the display will shut down to
preserve power, but the charging will continue
6.2 Operation of the Remote controller
1. To turn on the Remote controller (RC), press and hold the “-” and “F” buttons for 4
seconds.
2. To turn it off, press and hold the “-” and “F” buttons for 7 seconds.
Note: The SiFly RC is equipped with an auto-power-off feature that will turn it off if there is no
user input or motion detected for 5 minutes.
When on, the Remote controller is in disarmed mode (locked icon on the display). This feature
is a safety measure to prevent accidental propellor spinning while swimming and climbing on
the board.

3. To arm the motor, press the “X” button, followed by a press of the “F” button within 1
sec. That opens a 5-second window within which you can apply the throttle. If you
don’t, it will disarm again.
6.3 Pairing
The Remote controller can only be paired to one board at a time.
1. Go into the Menu and choose the Pair option. You can access the menu by holding the
“F” button while the RC is in disarmed mode. Use the “-” and “+” buttons to navigate up
and down the list, “X” to go back and “F” to confirm.
2. Open the Mobile app and select the board from the list of devices that you like to pair it
with.
Note: The board has to be added prior to pairing the remote see Mobile app
3. Click on the “Pair Remote” tab.
4. Click on the RC found on the list of devices in range. Now your RC is paired to the
desired board!

6.4 Riding
The Remote controller lets you adjust the RPM of the motor. With its patent pending
ergonomic design, it can be used as a handle to lean on, while climbing and standing up on the
board.
The status bar is positioned on the top side of the screen. The battery indicator of the RC is
positioned in the left corner.
The second icon in the row is a bluetooth sign. When blinking, the RC is looking for its paired
board. When solid, the RC is connected to its paired board.
The third icon in the row is a GPS sign. It indicates when the board has established a GPS fix.
The fourth icon in the row is either the letter “E” or “D”. It indicates the riding mode: “Easy” or
“Dynamic”.

The battery capacity percentage of the PowerCell is visualised in the top right corner of the
display.
Caution! Never go eFoiling with less than 2 bars of battery capacity of the RC!
After arming the motor, hold the trigger of the Remote controller and the motor will start
running. There are 20 virtual power limiting steps (gears) that will help you control the throttle
better.
Increase and decrease the gears by using the “-” and “+” buttons. Don’t increase the gears too
quickly! That will help you accelerate the board faster, without making your balance
uncomfortable.
You can choose 2 different Riding modes from the Menu of the RC:
Easy mode
In Easy mode the trigger acts like an “ON/OFF” switch. You won’t have fine control of the power
on your finger tip. Although limiting, this will help you learn how to control the hydrofoil with
your body faster.
Dynamic mode

In Dynamic mode you can adjust the power by moving the trigger between fully pressed and
fully depressed positions.
6.5 Backlight
If you are riding in low light conditions, make use of the backlight! Go into Backlight in the
Menu. Use the “-” and “+” buttons to adjust the brightness level and go back with “X”.
Note: In periods when no motion is detected in the RC, the backlight will shut off to save
energy.
6.6 Calibration
In rare situations, when the trigger is not responding in the expected way, you may need to
calibrate it.
To do that, choose the Calibrate option from the Menu and follow the instructions on the
screen.
1. In the first step, release the trigger and wait for a few seconds.
2. You will be notified when to squeeze and hold the trigger for another few seconds.
3. You will receive a confirmation sign.

7Mobile app
The Mobile App takes the eFoiling experience to a whole new level. You can use it to monitor in
real time the parameters of your eFoil and Battery, Set up and Update your Devices, Pair
remotes and review your GPS tracks from your rides.
To download the Mobile App for Apple or Android, scan the QR code:
oCreating an account
You will need to create an account with your details. You can either create a private account if
you are a private customer or a business account if you are a business owner or the manager of
a watersports center.
You will have to fill in your email in order to receive an authentication code. The code expires
after 4 hours.
Once you receive the authentication code, you can fill in your details. When you are all set, you
are ready to start using the app!

Sign in with your username and password.