SDREAM X 750S User manual

Thanks for your love of SDREAM electric bicycles (e-bike). To ensure safe riding,
please read the owner’s manual carefully. Before knowing the product's
performance, it's recommended not to ride your bike directly on the road.
Please keep the owner’s manual properly.
Electric Bicycle Owner’s Manual

2
1. Loosen the handlebar clamp and fold the handlebar.󵿎
2. Hold the knob under the frame while loosening the folding clamp in the middle of
the frame, then fold the bike frame in half.
3. Press the pedals inward and then push them up to 90°.
4. Confirm the above steps, then the folding is completed.
Before turning on the display, ensure battery power is on by pressing the button on
the battery on the left side of the bike.
Folding Method
Operating the display
1
Drawings of Complete Bicycle and Its Parts
Display
Shifting Controller Removable Li-ion Battery Tires
Rear Suspension Disc Brake
Integral Wheel Derailleur Motor
Foldable Pedals
Frame Adjustable Stem Saddle Frame Folding Stem Folding Headlight
Battery Button(left side) Adjustable Seat Post
Walk Assist indication Service tool connection
Light indication
Power output
indication
Speed info.
Other display info.
Error code
Battery indication
Adjust up
& down
Power-on
button
M button
PAS levels

3 4
Using the display
Start to ride the bike
Error codes
1. Long press power button to turn on/off.
Note: the display will turn off automatically after 5 minutes of inactivity.
2.Assist level switch：Short press 、 buttons to switch pedal assist level. There are
0-6 PAS levels , When PAS level is empty, it means there is no pedal assist power
output which is PAS off state.
3. Information switch：In a power-on state, short press M button to switch in cycles
among TRIP, ODO and RANGE: TRIP/AVG -> ODO/MAX -> RANGE/AVG.
4. Light control function：To change light state manually under auto light function, long
press .
The auto light function is disabled, once the light on/off is operated manually.
Shutdown and turn on the display again, to activate the auto light function.
5. Speed info indication：The display provides speed info indication. Under standard
condition, the basic interface displays real-time speed, and switchable indication of
average speed AVG and maximum speed MAX.
6. Walk assist function：When speed is below 6 km/h, long press and hold button
to enter walk assist mode. Motor outputs power according to the set speed and
controls the actual walk speed, display shows the walk assist icon and the real-time
speed while PAS level shows empty. Release button or any other button to exit
walk assist mode, the motor will be turned off, and the display gets back to the basic
interface.
1. Turn on the battery, turn on the display and confirm it is nothing unusual, confirm
battery is full.
2. Engage first or higher gear, start to pedal a few times to get pedal assist, then
engage the throttle.
3. How the throttle works: The throttle is located on the right side of the handlebar. The
rider can use it with a twist of the throttle grip to propel the bike forward without
pedaling. To engage the throttle while riding, slowly and carefully rotate it toward
yourself. The more you twist, the more powerfully the motor will propel the bike
forward. Once you release the throttle or apply the brakes, the throttle will no longer
propel the bike forward. Always keep one hand on the brake lever and be prepared
to squeeze the lever to disengage the throttle if needed, or turn off the bike to
prevent accidentally engaging the throttle.
NOTICE: Throttle and motor use may not be allowed in all areas. It is your responsibility
to know and follow local ebike regulations, rules, and traffic laws where you ride.
If the bike detects a fault, an error code will be shown on the display.
Contact [email protected] for additional information.

How to check the power of the battery?
Press the battery status button to see the current remaining battery power by the color
of the battery status indicator: Green: 100%-80%, yellow: 80%-20%, red: less than 20%.
1. Fold the middle part of the bike, use the battery lock key to release the fixing device
between the battery and the body, and carefully pull out the lithium battery.
2. Connect the power plug of charger to the socket with specified voltage.
3. Insert the charging plug of the charger into the charging jack of the battery, and then
start charging. At this time, the charger indicator is displaying in “Red” .
4. When the charger indicator turns to “Green”, the battery is fully charged.
1. Open the dust cover on the left side of the e-bike.
2. Plug in the charging plug into the battery's charging jack.
3. Connect the charger power plug to the socket of the specified voltage.
4. Start charging, the charger indicator is displaying in “Red”.
5. When the charger’s indicator turns to “Green”, it means that the battery has been fully
charged. It takes about 3-8 hours to fully charge the battery.
Attention:
65
Battery󵿎And Charger
Battery Appearance
Charger Appearance
Charging Without Disassembling Of The Battery
Charging With Disassembling Of The Battery
Power Plug
Charger Shell
Indicator
Charging Plug
Battery Case Charging Jack
Battery Status Button Battery Status Indicator
Battery Keyhole

1. The official charger should be used only. The charger port should be well connected to
the battery connector. The non-standard or unqualified charger may cause a battery
fault and reduce battery life.
2. During charging, the charger should be placed in a ventilated environment; it’s strictly
prohibited to charge under a burning sun, in a closed space or high-temperature
environment.
3. The charging time should be at least 3 hours. In order to have 100% charged, please
continue charging for 1~2 hours after the charger indicator turns to green. The battery
must be charged within 24 hours after it’s entirely run out. The battery needs to be
charged for 3 to 10 hours before use.
4. Please do not drain the battery entirely during riding. Please charge the battery as soon
as possible when the last bar of the display’s battery indicator is on. It will affect battery
life if the battery entirely runs out.
5. It is forbidden to place the battery for a long time if the battery already runs out. If the
battery still has not been charged for more than a month, the battery capacity will be
reduced by 5%. It is recommended to charge the battery before use. If the e-bike won’t
be used for a long time, it’s recommended to charge the battery once a month to
prolong the battery life and prevent the battery from losing electricity.
6. Put the charger and battery in a stable, dry, inflammable, and explosive-free place.
Keep them away from children. During charging, the temperature of the charger might
go high; it’s normal as long as the temperature does not exceed 55°C/140°F.
7. Prevent metal from short-circuiting the charging port.
8. After the battery is fully charged, unplug the charger from the socket first, then
disconnect the charging port from the battery.
9. Waste batteries can’t be discarded randomly or disassembled arbitrarily.
SDU SDREAM 750S’s warranty time is ONE year. During the warranty time, we provide
free warranty parts (besides spare parts such as tires, etc) and free technical support.
Out-of-warranty or non-warranty service will be charged independently.
1. Faults caused by usage, maintenance, and adjustment of the user without complying
with the “Owner’s Manual.”
2. Faults caused by user’s random disassemble, repair, refit, and non-compliance of
instructions.
3. Faults caused by improper storage of the user, accidents, and disaster caused by force
majeure, such as floods and fires.
4. This warranty does not cover the normal wear and tear of the bike or its components
(for example, tires, inner tubes, brake pads, chains, etc).
5. Parts damaged during random disassemble beyond the scope specified in the
instructions.
1. How to check the battery status from the display?
The five battery bars represent the capacity of the battery. The five battery bars are
bright when the battery is in high voltage. When percentage is 0%, the battery needs to
be recharged immediately.
2. How long should I charge?
The charging time should be at least 3 hours. In order to have 100% charged, please
continue charging for 1~2 hours after the charger’s indicator turns to green. The
battery must be charged within 24 hours after it’s entirely run out. The battery needs
to be charged for 3 to 10 hours before use.
3. How should I deal with the battery when the electric bicycle is not used for a long time?
It is forbidden to place the battery for a long time if the battery already runs out. If the
battery still has not been charged for more than a month, the battery capacity will be
reduced by 5%. It is recommended to charge the battery before using. If the e-bike
won’t be used for a long time, it’s recommended to charge the battery once a month
to prolong the battery life and prevent the battery from losing electricity.
Attention TERMS OF WARRANTY
Limited One Year Warranty
No Warranty
SDREAM E-bike User FAQ
87

Welcome to send your advice and suggestions to us
through [email protected]
4. Is it normal for the charger to heat up during charging?
It’s normal as long as the temperature does not exceed 55 °C/140°F.
5. Is the battery fixed or can it be removed?
The battery is removable.
6. How to activate the electric assist mode?
Set the assisted level to more than 1, step the pedal for more than half a circle, then
trigger the sensor to boost. Models equipped with throttle: you can use the throttle to
assist riding.
7. What if the battery runs out? Can I still ride the bike?
Yes. You can ride it like a regular bike.
8. What are the shifting gears?
The e-bike is equipped with 7-speed Shimano shifting gears, by which you could adjust
the speed during riding to fit in different terrains and weather conditions. Low-speed
gear is suitable for starting and uphill, high-speed gear is suitable for medium and
high-speed riding.
9. Is there a brake power off system?
Yes. When the brake lever is held, the power assist system will be forcibly powered off.
When the brake lever is released, the power assist system will resume work.
10. What’s the maximum mileage?
The maximum mileage should be about 24-50miles/40-80 kilometers according to
different bike models. The actual mileage will be affected by different riding modes
and other factors like the weight of biker, riding conditions, tire pressure, and wind
resistance.
11. Why does the cassette get rusted? Is there any way to deal with it?
The cassette is made of steel and may get rusted when it’s soaked with water. Rust
remover can clean rust efficiently.
12. What’s the warranty policy?
SDREAM 750S’s warranty time is ONE year. During the warranty time, we provide free
warranty parts and free technical support. Out-of-warranty or non-warranty service
will be charged independently.
109