HC26 Electric Bicycle User Manual

Precautions

Please carefully check whether all parts are in good condition before use. If there is any problem, please contact the dealer in time.

Abide by the city traffic laws and regulations when using.

Slow down when encountering rain, snow, and slippery roads. Increase braking distance when braking, and avoid traveling as much as possible to ensure safety.

Do not disassemble parts without authorization. If replacement is needed, please purchase standard parts from distributors.

Wading is prohibited during riding or when riding in rainy days. When accumulated water floods the lowest position of the motor hub, it can cause line failure.

Do not contact the metal points of the battery, as this can cause a large short-circuit current, leading to accidents and fire. Please pay attention!

Wear a helmet when riding an electric bicycle and carry articles according to the law.

Do not park electric bicycles in foyers, stairs, walkways, and safety exits of buildings.

Due to continuous technological improvement of products, there may be differences between the physical objects and the instructions. Please refer to the physical object for accuracy.

Special Tips:

Do not park electric bicycles in the foyer, stairs, walkways, and safety exits of buildings.

Electric bicycles should not be charged or parked in residential buildings. When charging, keep them away from combustibles and flammable materials and avoid charging for a long time.

Waste batteries cannot be disassembled without authorization.

Riding Precautions

• Accelerate slowly when starting and assist with pedals when climbing to prolong the service life of batteries and motors.
• The bicycle controller is equipped with overload protection that automatically cuts off power during overload. Power is restored when conditions normalize.
• The maximum load capacity of this bicycle is 120kg (including rider weight). Do not overload. When riding on complex roads, utilize the shock absorption function.

Parking Precautions

• Turn off the power switch before operation to prevent accidents caused by sudden starts due to unintentional rotation of the speed regulating handle.
• When parking, turn off the power supply, lock the battery, and remove the key.
• For your driving safety and to keep your bike in the best condition, perform regular maintenance.

Battery Storage

• Store the battery at an ambient temperature of 20-25°C. Do not store the battery in environments above 50°C, as this can lead to irreversible capacity attenuation.
• If the bicycle is not used for a long time (e.g., winter, summer, or other special circumstances), remove and store the battery separately. Maintain and charge it regularly to prevent damage from complete discharge.
• The optimal storage capacity for the battery is 50%. Long-term storage below 10% or above 90% can lead to irreversible capacity attenuation.

Bicycle Installation

Since 95% of the bicycles are pre-assembled, the remaining parts can be installed directly upon receipt.

1. Adjust the top and side screws to rotate the adjustable riser 180 degrees and secure it.
2. Install the handlebar riser.
3. Remove the screws and nuts.
4. After removing the screws, proceed as shown in the figure.
5. Install the front fork and tighten the screws and nuts.
6. Connect the motor wire, ensuring the arrows on both connector ends align. Install the motor wire holder.
7. Install the fender bracket screws.
8. Install the lights.
9. Proceed as shown in the picture.
10. Install the gasket as shown.
11. Connect the light cable, ensuring the arrow direction aligns.
12. Take out the pedals marked 'R' and 'L', align them with the crank holes, and lock them with a wrench.

Electric Bike Charging

Connect the charger first to the electric bike battery, then connect the other end to the power source.

Electric bicycles are equipped with special batteries that must be charged with the company-provided charger. Before charging, disconnect the electric bicycle from the power supply. During charging, connect the charger's output end to the electric bicycle and the other end to the power supply. The charger's red indicator light signifies that charging is in progress.

If you notice a peculiar smell during charging, stop immediately and send the unit for maintenance.

Do not touch the battery or charger during charging. Children are strictly prohibited from touching the charger.

Keep the charger or battery away from flammable materials. Do not charge near infants and children. Do not leave the device charging unattended for extended periods. For your safety and your family's, it is recommended not to charge in the early morning.

Do not use chargers from other brands. Chargers are high-voltage circuits; do not disassemble them without authorization.

Battery Disassembly and Assembly

Open the battery lock.

Turn the knob clockwise to pop out the battery.

Remove the battery.

Precautions for Battery Use

• Charging the battery takes approximately 9-10 hours. A green indicator signifies a full charge. Turn off the power connected to the charger first, then remove the charger. Avoid prolonged charging (over 12 hours).
• Do not cover the charger or battery during charging to prevent overheating. It is recommended to start charging when the battery level is below 20%. For long-term parking, store the battery at 50% charge and recharge it every two months.

Motor Description

When the electric bicycle starts, the drive motor draws significant current, producing a noticeable noise as it overcomes resistance to reach speed. This is a normal phenomenon caused by the friction between current torque and magnetic force. Increased starting current in the electric bicycle will result in more pronounced noise, which is normal and does not affect usability. Note: Accelerate slowly when starting the electric bicycle to reduce initial current and noise, which also benefits battery life.

Pattern Description

• Electric drive: The electric bicycle is powered by electricity.
• Pedal assist mode: The key is turned on, and the instrument is activated. The electric assist mode begins, powered by both manpower and electricity.
• Riding an electric bicycle: The electric bicycle is powered by manpower.

In pedal assist mode, assistance is engaged when the pedal is pressed forward and stops when the pedal stops. Braking automatically disengages the power assist system, slowing the e-bike. When the e-bike reaches the maximum speed for the selected gear, the power assist deactivates.

Energy Consumption Description

• Fully charge the battery before long-distance travel. Rough road conditions and hilly terrain consume more energy.
• Carrying more weight on an electric bicycle consumes more energy.
• Operating an electric bicycle at low temperatures reduces its range.
• When the battery is turned off, the electric bicycle functions as a regular bicycle.

Warning

• Do not put the battery in fire or overheat it.
• Do not use chargers from other manufacturers; use the specified charger.
• Do not disassemble or modify the battery.
• Do not connect positive and negative electrodes or touch terminals with metal objects.
• Do not subject the charger to shocks, such as dropping. Keep the charger away from water.
• Avoid prolonged skin contact with the charger during charging, as it may cause burns due to temperatures reaching 40°C-60°C (104°F-140°F).
• Do not cover the charger with objects or place objects on it to prevent overheating and fire.
• Do not pedal while the battery is installed for charging. Avoid winding the power cord around the pedal or crank, as this can damage the plug, cause electric shock, or fire.

After-Sales Service

Not Covered By Warranty

• Warranty period has expired.
• Commercial rental is not covered.
• Consumable parts are covered by the warranty.
• Damage caused by unauthorized modification, disassembly, or accessory replacement.
• No warranty for parts damaged due to improper use, crashes, injuries, water ingress, or user overload.
• Changes in factory batches or upgraded parts may occur without prior notice.

KD926 E-bike Display User Manual

Product Name and Model

Intelligent LCD display for E-bike; model: KD926.

Specifications

• 36V/48V Power Supply
• Rated working current: 25mA
• Maximum working current: 30mA
• Off leakage current: <1uA
• Controller working current: 50mA
• Operating temperature: -20~60°C
• Storage temperature: -30~70°C

Appearance

[Image of the KD926 display]

Function Summary

The KD926 provides various functions to meet your needs. The displayed contents include:

• Battery capacity indicator
• Motor power indicator
• PAS level adjustment and indicator
• Speed indicator (real speed, Max. speed, Avg. speed)
• Distance (Trip and ODO)
• 6km/h push assistance
• Trip time
• Backlight
• Error code
• USB connection
• Various Parameter Settings (wheel size, speed limit, battery capacity, assistance level, power-on password, controller current limit, etc.)
• Default parameter recovery function

Definition of Buttons

The KD926 display corresponds to the K5 button. The K5 button has 5 buttons: ON/OFF, 'i', UP, Headlight, DOWN/Boost. In this manual, 'ON/OFF' key is referred to as 'ON/OFF', 'i' button as 'i', plus button as 'UP', and minus/boost button as 'DOWN'.

General Operation

Power On/Off

Long press the 'ON/OFF' button for 2 seconds to turn on the display and power the controller. To turn off the e-bike, press and hold the 'ON/OFF' button for 2 seconds. When off, the display consumes less than 1uA of leakage current.

The e-bike system automatically shuts down if it remains idle for more than 5 minutes.

Display Interface

After powering on, the display shows real-time speed (km/h) and Trip (km) by default. Short press the 'i' button to cycle through TRIP (km), ODO (km), TIME (min), MAX speed (km/h), AVG speed (km/h).

[Images showing display interface switching]

6km/h Push-Assistance

Press and hold the 'DOWN' button. After 2 seconds, the e-bike enters electric power-assisted mode, traveling at a constant 6km/h. The screen displays ' ' [push-assistance icon]. Release the 'DOWN' button to immediately stop power output and return to the previous state. This function is only enabled at PAS level 0.

[Image of push-assistance mode]

The push-assistance function can only be used when pushing the e-bike, not while riding.

Turn On/Off Backlight

Click the 'Headlight' button to turn on the display backlight and signal the controller to turn on the headlights. This is useful in low light conditions or at night. Click the 'Headlight' button again to turn off the backlight and headlights.

PAS Level

Short press the 'UP' or 'DOWN' button to change the e-bike assist level and motor power. PAS levels range from 0 (unassisted) to 5 (highest power). Pressing 'UP' at level 5 or 'DOWN' at level 0 will maintain the current level.

[Images showing PAS level interface]

Motor Selection

Long press the 'i' button to switch between front, rear, and dual motors, and adjust motor output mode. Options include front-drive, rear-drive, dual-drive, and dual-drive with low current. The default is rear-drive.

[Images showing motor selection interface]

Battery Capacity

Battery power is displayed in 10 grids, indicating undervoltage (flashing grid), 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100% power.

[Image of battery capacity interface]

USB Connection

When the display is connected to an external USB device, the interface shown in the figure below will appear.

[Image of USB connection interface]

Brake Display

When the e-bike brakes, the display shows the mode illustrated in the following figure.

[Image of brake interface]

Cruise Control Display

Press and hold the minus key (in non-PAS level 0) to activate cruise control. The display will then show as illustrated below.

[Image of cruise control interface]

Error Code

If the electronic control system fails, an error code will be displayed automatically. Refer to Attached List 1 for detailed error code messages.

[Image of error code interface]

If an error code is displayed, please address the fault promptly, as the e-bike may not operate normally after an error occurs.

General Setting

Long press the 'ON/OFF' button to turn on the device. When the e-bike is stationary, press and hold the 'UP' and 'DOWN' buttons for over 2 seconds to enter the normal setting state. All settings must be made while the e-bike is stationary.

Trip Reset

TC stands for Clear Single Mileage. Select Y/N by pressing 'UP' or 'DOWN'. 'Y' resets the trip; 'N' does not. Short press the 'i' button.

[Image of trip reset interface]

ODO Reset

OC stands for ODO reset. Select Y/N by pressing 'UP' or 'DOWN'. 'Y' resets ODO; 'N' does not. Short press the 'i' button.

[Image of ODO reset interface]

Light Sensitivity

AL represents light sensitivity. Press 'UP' or 'DOWN' to cycle through sensitivity levels (OFF, 1-5). The default is level 3. 'OFF' disables the light sensor function. Short press 'i' to confirm and proceed to the next setting.

[Image of light sensitivity setting interface]

Backlight Brightness

bL represents backlight brightness. Parameters 1, 2, and 3 set the brightness (1=darkest, 2=standard, 3=brightest). The default is 3. Use 'UP' or 'DOWN' to change brightness. Short press 'i' to confirm, long press 'i' to save and exit settings.

[Image of backlight brightness interface]

Toggle Unit

U represents the unit system: 1 for imperial, 2 for metric. Use 'UP' or 'DOWN' to switch between speed and mileage units. Short press 'i' to confirm, long press 'i' to save and exit general settings. The default unit is metric (2).

[Image of toggle unit interface]

Automatic Shutdown Time Settings

ATF indicates automatic shutdown time. Set the time to 1, 5 (default), or 10 minutes. Press 'UP' or 'DOWN' to adjust parameters. Long press 'i' to confirm and exit general settings.

[Image of automatic shutdown time settings interface]

Restore Default Settings

dEF restores default parameters. Two methods: 1. Press 'UP'/'DOWN' to select Y/N. 'Y' restores defaults; 'N' does not. Confirm 'Y' by holding 'i' for over 2 seconds. 2. On the startup password screen, hold 'i' for at least 2 seconds. The instrument will automatically restore defaults (displaying dEF-00) and return to the normal display.

[Image of restore default settings interface]

Parameter for Wheel Diameter and Speed Limit Setting

Press and hold 'UP' and 'DOWN' for over 2 seconds to enter regular setting mode. Then, press and hold 'i' and 'DOWN' simultaneously for over 2 seconds to enter the wheel diameter and speed limit setting interface.

Wheel Diameter Setting

LD indicates wheel diameter setting, ranging from 18 to 29 inches. The default is 28 inches. Press 'i' to save and proceed.

[Image of wheel diameter setting interface]

Speed Limited Setting

LS indicates the speed limit setting, ranging from 12-99 km/h. The default limit is 45 km/h. Press 'i' to save and proceed.

[Image of speed limited setting interface]

Exit Setup

In setting mode, press 'i' (within 2 seconds) to confirm and save the current setting. Long press 'i' (over 2 seconds) to save and exit settings. Long press 'DOWN' (over 2 seconds) to cancel and exit without saving. If no operation occurs within one minute, the device automatically exits the setting state.