SDREAM X 750S Electric Bicycle Owner’s Manual

: June 5, 2024
: SDREAM

Table of Contents

Overview of the e-bike and components
Operating the folding mechanism
Operating the display
Battery and charging
Limited one year warranty
- Warranty Limitations
Frequently asked questions
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

SDREAM X 750S Electric Bicycle

SDREAM-X-750S-Electric-Bicycle-Owner's-Manual-SDREAM-X-750S-Electric-
Bicycle

Thank you for your purchase of the SDREAM X electric bicycle. This manual covers the setup, operation, and maintenance of your e-bike. For the safety of yourself and others, please read and understand it in its entirety before operating the bicycle and retain it for your records.

Because it is impossible to anticipate every situation or condition that can occur while riding, this manual makes no representations about the safe use of bikes. There are risks associated with the use of any bike that cannot be predicted or avoided and are the sole responsibility of the rider. Until you are familiar with the performance of the e-bike, it is recommended not to ride your bike on the road.

Overview of the e-bike and components

Display
Shifter
Removable Li-ion Battery
Tires
Rear Suspension
Disc Brake
Wheel
Derailleur
Motor
Foldable Pedals
Frame
Adjustable Stem
Saddle
Frame Hinge
Stem Hinge
Headlight
Battery Controls (left side)
Adjustable Seat Post

Operating the folding mechanism

Loosen the clamp by the handlebar hinge and fold the handlebar.
Hold the knob under the frame, loosen the clamp by the frame hinge, and fold the
bike frame in half.
Press the pedals inward and then push them up 90° to fold.

Operating the display

Value increase key (“+”)
Value decrease key (“-”)
Power on/off key
Function key (“i”)
Electric assist level
Battery level
Headlight indicator
Current speed
Trip odometer display
Customizable function display
Motor power indicator

Before turning on the display, ensure battery power is on by pressing the button on the battery on the left side of the bike.

Using the display

Turn the display on/off: press power on/off key to turn on. Long press power on/off key to turn off. Note: the display will turn off automatically after 10 minutes of inactivity.
Switch electric assist level: press “+”and “-”keys to cycle electric assist levels.
Switch display mode: press “i” key to cycle display modes between odometer (ODO), maximum speed (MAX), average speed (AVG), and trip time (TIME).
Walking mode: press and hold “-” key. Release to exit walking mode. (Note: walking mode activates the bike’s motor at a steady 3.7mph (6km/h) so that you can walk alongside it).
Turn on the headlight: long press “+” key for 2 seconds. Long press again to turn the headlight off. (Note: turning on the headlight also puts the display into nighttime mode with reduced screen brightness).

Changing display settings

Long-press “ + ” and “ – ” keys simultaneously to enter the settings interface. Note: the settings interface will time out after 1 minute of inactivity and return to the normal display mode.

While in the settings interface, use the “+” and “-” keys to navigate and the “i” key to select the highlighted option. When finished, follow the prompts to save the updated settings and exit the settings interface.

SETT I NG

Display Setting
Advanced Settings
EXIT

Display Setting

BACK

Advanced Settings

BACK

Power-on Password

The power-on password is a 4-digit code that can be required when powering on the e-bike for additional security. Please note that a password does not replace other security measures such as a bike lock.

The password is OFF by default. To turn on the password, access the Password Settings page by selecting “Password” in the Advanced Settings menu. From here, you can toggle the power-on password ON or OFF.

To enable a power-on password, choose ON and press the “ i ” button to confirm. Then, enter the current password by using the “ + ” and “ – ”buttons to change the number and pressing the “ i ” button to confirm digits one by one. Note: the default password is “1212”.

To change the password, select “Reset Password” from the Password Settings page. You will be prompted to enter the current password (note: the default password is “1212”), and then enter and re-enter your new password.

Error codes

If the bike detects a fault, an error code will be shown on the display. Contact support@sdream.bike for additional information.

Error codes	Fault Description	Trouble Shooting
Display “21”	Current Abnormality	Check the controller
Display “22”	Throttle Abnormality	Check the throttle
Display “23”	Motor Phase Abnormality	Check the motor module
Display “24”	Motor Hall Signal Abnormality	Check the motor module
Display “25”	Brake Abnormality	Check the brakes
Display “30”	Communication Abnormality	Check the controller

Battery and charging

Checking battery power

There are two ways to check battery power:

Press the battery status button. The color of the battery status indicator displays the remaining battery life as follows: Green: 100%-80%, yellow: 80%-20%, red: less than 20%.
Use the battery level indicator on the LCD display.

The battery can be charged on the bike or removed for charging.

Charging the battery without removing it

Open the charging port dust cover on the left side of the e-bike.
Connect the charging plug to the battery’s charging port.
Connect the power plug to a power socket of the specified voltage.
The indicator light on the charger will remain Red while charging.
When the indicator on the charger turns Green, the battery has been fully charged.
It takes ~3-8 hours to fully charge the battery.
After the battery is fully charged, unplug the charger from the socket first, then disconnect from the battery charging port.

Removing the battery to charge

Fold the bike frame and use the battery lock key to release the battery between the battery and the body, and carefully pull out the lithium battery.
Connect the charging plug to the battery’s charging port.
Connect the power plug to a power socket of the specified voltage.
The indicator light on the charger will remain Red while charging.
When the indicator on the charger turns Green, the battery has been fully charged.
It takes ~3-8 hours to fully charge the battery.
After the battery is fully charged, unplug the charger from the socket first, then disconnect from the battery charging port.

Warnings

Ensure all connectors are fully plugged in prior to charging.
Use only the original charger supplied with your e-bike or a genuine SDREAM replacement. Use of an aftermarket charger may cause a battery fault and reduce battery life.
Keep the charger and battery in a cool, dry place away from direct sunlight and other sources of heat. Keep away from children.
During charging, make sure the charger is in a location with good airflow. The charger may feel warm during charging. This is normal as long as the temperature does not exceed 131°F/55°C.
Always charge the battery for at least 3 hours. Prior to first use, charge for 8-10 hours.
It is recommended not to drain the battery completely. If the battery runs out completely, charge it within 24 hours to preserve battery longevity.
It is recommended to charge the battery at least once a month even if the e-bike is not used in order to preserve battery longevity.
Prevent metal from touching the charging port of the battery.
Follow all local recycling laws when disposing of batteries.

Limited one year warranty

The SDREAM X is covered by a one year limited warranty. During the warranty term, we provide free parts and technical support. Out-of-warranty or non- warranty service is also available for a separate charge.

Warranty Limitations

Faults caused by usage, maintenance, and adjustment without complying with the Owner’s Manual recommendations.
Faults caused by disassembly, repair, and refitting not authorized in the Owner’s Manual or beyond the scope specified in the Manual.
Faults caused by improper storage, accidents, and disaster caused by force majeure, such as floods and fires.
This warranty does not cover normal wear and tear of the bike or its components (for example, tires, inner tubes, brake pads, chains, etc).

Frequently asked questions

What should I do before riding my e-bike?
A few quick checks will help make sure that you’re getting the best, safest ride possible, as follows:
a. All major bolts are tightened
b. The tires have adequate pressure
c. The front and rear brakes react as they should to the brake levers
d. There is no play in the derailleur, chain, or wheel spokes
e. The battery has a charge and is secured to the bike
f. All cable connections are correctly plugged in (Note: if cables have been disconnected, please note the two arrows on the connectors MUST be aligned when they are reconnected).
What is the maximum range of the e-bike?
The maximum range will be approximately 24-50 miles/40-80 kilometers, depending on a number of factors including pedal input and assist level, tire pressure, and environmental factors such as terrain and wind resistance.
How long should I charge the battery?
The first time you use the bike, charge the battery for 8-10 hours. For subsequent charges, the charging time should be at least 3 hours. To maximize battery capacity, continue charging 1~2 hours after the charger indicator turns to green. (Note: If the battery runs out completely, charge it within 24 hours to preserve battery longevity.)
Is it normal for the charger to heat up during charging?
It is normal, as long as the temperature does not exceed 131°F/55°C.
How do I check the battery status?
There are two ways to check battery power:
a. Press the battery status button. The color of the battery status indicator displays the remaining battery life as follows: Green: 100%-80%, yellow: 80%-20%, red: less than 20%.
b. Use the battery level indicator on the LCD display. Note: if the battery percentage is 0%, battery power is very low and the battery should be charged immediately.
What if the battery runs out? Can I still ride the bike?
Yes, when the battery runs out the bike can be ridden like a regular bicycle.
How can I ensure the longevity of my battery?
To preserve battery performance, follow the below recommendations:
a. Store your bike indoors if possible, away from direct sunlight and other sources of heat as well as moisture such as from rain.
b. Avoid charging the battery in extremely cold (under 32°F/0°C) or hot (above 122°F/50°C) environments as it may reduce the battery’s service life or even cause a fire.
c. It is recommended not to drain the battery completely, and to charge the battery after every ride if possible. If the battery runs out completely, charge it within 24 hours to preserve battery longevity.
d. It is recommended to charge the battery at least once a month even if the e-bike is not used in order to preserve battery longevity. If storing the battery for a long time, make sure the charge level stays above 40%.
e. Use only the original charger supplied with your e-bike or a genuine SDREAM replacement. Use of an aftermarket charger may cause a battery fault and reduce battery life. A lithium battery can be fully charged and discharged 300-500 times (cycles).
f. A full charge (0% -> 100%) and discharge (100% -> 0%) is considered one cycle. Discharging the battery 50% and then charging it back up from 50% -> 100% is 0.5 cycle. It is normal for the performance of the battery to reduce with time and charge cycles.
Is the battery fixed or can it be removed and replaced?
The battery is removable and replaceable.
How to activate the power assist mode?
Set the assist level to 1 or higher, then pedal for at least ½ of a pedal turn to trigger the power assist, or use the twist throttle.
What is the difference between a speed sensor and a torque sensor
A speed sensor measures pedaling speed while a torque sensor measures
pedaling power.
Is there a brake power cutoff 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.
What are the gears and shifter for?
The e-bike is equipped with a 7-speed Shimano cassette and shifter, which lets you adjust the speed and torque during riding to fit the terrain and weather
conditions. For instance, a lower gear is more suitable for pushing off and for going uphill, while a higher gear is more suitable for medium and high- speed riding.
What kind of maintenance do I need to perform on my e-bike?
Most of the mechanical parts of an e-bike are the same as a normal bike and require the same maintenance. Contact your local bike shop for parts such as tires and brakes. When performing maintenance, please follow the below recommendations:
a. In order to prevent brake malfunction, do not lubricate brake discs.
b. Do not disassemble the battery or the drive unit.
c. Do not touch the battery terminals. Terminals can be cleaned with a battery cleaner without the use of water.
d. Do not spray any lubricant into the wire ports.
Can I replace the brakes?
You can replace the brakes and most replacements on the market are compatible, but the bracket of the calliper must fit. Please contact your local bike shop to confirm and have a professional technician perform the installation
How do I clean my e-bike? Can I wash it?
Do not wash the e-bike with water. To clean, use a wet towel, keeping it away from the battery terminals
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 contacts water. It can be cleaned using any store-bought rust remover.
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 contacts water. It can be cleaned using any store-bought rust remover.