BURCHDA Electric Bicycle User Manual

Attention

• 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 you need to replace them, 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 will cause line failure.
• Do not contact the metal point of the battery, otherwise it will produce a large short-circuit current and cause an accident 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 the foyer, stairs, walkways, and safety exits of buildings.
• Due to continuous product improvement, there may be differences between physical objects and instructions. Please take the physical objects as the standard.

Special Tips

• Do not park electric bicycles in the foyer, stairs, walkways, and safety exits of buildings.
• Electric bicycles should not be charged and parked in residential buildings. When charging, they should stay 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 help with pedals when climbing, which can prolong the service life of batteries and motors.
• The bicycle controller is equipped with overload protection function, which will automatically cut off the power supply when overload occurs. When it returns to normal, the power supply of the electric bicycle will be automatically turned on.
• The maximum load capacity of this bicycle is 180kg (including the weight of riders). Do not overload driving. When driving on complex roads, try to ride and turn on the shock absorption function.

Parking Precautions

• When parking, turn off the power switch to prevent accidents caused by sudden start of the bicycle 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, please maintain it regularly.

Battery Storage

• Please store the battery at an ambient temperature of 20 ~ 25°C. Do not store the battery in an environment higher than 50°C, otherwise it will lead to irreversible capacity attenuation of the battery.
• If the bicycle is not used for a long time (e.g., winter, summer, or other special circumstances), the battery must be taken out and stored separately, maintained, and charged regularly. Otherwise, the battery may run out and cause irreversible damage.
• The most suitable storage capacity of the battery is 50%. Long-term storage of less than 10% or more than 90% will lead to irreversible capacity attenuation of the battery.

Bicycle Installation

Since 95% of the bicycles have been installed, the rest can be installed directly after receiving.

Step 1: As shown in the figure, the front wheels of the bicycle you receive are separated from the bicycle body.

Step 2: Install handlebar riser.

Step 3: Attach the front fork to the quick release.

Step 4: Adjust the center position of the tire so that the positions on both sides are the same.

Step 5: Tighten the left and right nuts as shown.

Step 6: Install the lights and fenders, and connect the light wires (note that the arrows at both ends of the wiring correspond).

Step 7: Install the fender bracket screws.

*The installation method of RX50 and RX80 is the same. The installation pictures are for reference only; please refer to the actual product.

Fork Description

Turn the switch on the left side to switch the front fork damping system, and adjust the damping softness and hardness on the right side.

Pedal Instructions

Install the left and right pedals separately.

Handlebar Control Unit Description

Controls include Lamp, Horn, and Switch Handle.

Description of Variable Speed Finger Dial

Eight-level speed change finger dial.

• Please use the speed-changing finger dial when pedaling. (Note: Do not use it when the bicycle is stationary).
• When changing speed, it needs to be adjusted step by step (note: do not directly adjust from level 1 to level 8).

Effect Drawing of Bicycle Installation

Diagram showing bicycle components: Motor, Transmission, Boost sensor, Pedals, Seat, Battery, Instrument, Headlights, Front fork, Brake, Tyres.

Instrument Description

The instrument panel displays various information including USB display, Numerical display, Speed loop, Gear display, Brake Fault display, Power display, Speed display, Speed mode, and Mileage mode.

Control Operations

Switch, Add, Reduce, Model Controls

• Switch: Press to power on/off.
• Add: Short press the "+" key to increase gear.
• Reduce: Short press the "-" key to downshift.
• Model: Short press the "M" key to toggle function.

Mileage Mode Switch

In the starting state, short pressing the display mode button cycles through running time (Time), accumulated mileage (ODO), and single mileage (Trip).

Speed Mode Switch

In the power-on state, short pressing the M key switches the speed display mode cyclically: real-time speed (RT SPEED) → average speed (AVG SPEED) → maximum speed (MAX SPEED).

Backlight Switch

Long press the "+" key (1 second) to decrease backlight brightness and turn on lights (requires controller support). Long press again to restore original brightness.

Walking Mode

Long press the "-" key (1 second) to enter assisted walking state. Speed displays real-time speed, gear position displays 'P'. Release the "-" key to exit walking mode.

Cruise Control

Twist the handle to accelerate, then long press the "-" key to enter cruise control mode. The brake will immediately exit cruise control. The meter displays "P" and keeps flashing.

USB Function

Long press the "M" button (1 second) to turn on the USB function. Press the M button again for more than 1 second to turn off the USB function. The charging parameter will be DC 5V 500mA.

Data Clear

Press the "+" and "-" keys simultaneously for 1 second to clear temporary data, including maximum speed, average speed, single mileage, and riding time.

Correct Use of Charger

Electric bicycles are equipped with special batteries that must be charged by the special charger provided. Before charging, turn off the power supply. Connect the charger's output end to the electric bicycle, and the other end to the power supply. The red indicator on the charger lights up during charging.

Diagram description: Shows the charging port on the bicycle and the charger connection.

Battery Disassembly and Assembly

Step 1: Turn the key counterclockwise to open the battery lock.

Step 2: Turn the knob on the bottom of the battery; the lock will retract into the battery.

Step 3: Remove the battery.

Precautions for Battery Use

• It takes about 6 hours to charge the battery. The green indicator signifies a full charge. Turn off the power connected to the charger first, remove the charger, and avoid charging for extended periods (over 12 hours).
• When charging, do not cover the charger or battery with anything to avoid danger caused by overheating. It is recommended to start charging when the battery charge is less than 20%. For long-term parking, store the battery at 50% charge and recharge it once every other month.
• If you smell a peculiar odor during charging, stop charging immediately and send it for maintenance.
• When charging, do not touch the battery or charger. Children are strictly forbidden to touch the charger.
• Keep the charger or battery away from flammable materials. Do not charge near babies and children. Do not charge unattended for extended periods. For safety, it is recommended not to charge in the early morning.
• Do not use other brands of chargers. The charger is a high-voltage circuit; do not disassemble it without authorization.

Warning

• Do not put the battery into fire ?. Do not overheat the battery.
• Do not use other brand chargers to charge the battery. 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 ?.
• Do not let your skin touch the charger for a long time during charging. May cause skin burns because the temperature of the charger may become 40°C~60°C (104°F ~140°F) during external charging. ✋?️
• Do not cover the charger with objects or place objects on the charger to avoid overheating and fire. ??
• Please do not turn the pedal when the battery is installed on the bicycle for charging. Avoid winding the power cord on the pedal or crank, which may cause plug damage, electric shock, or fire. ⚙️❌

Energy Consumption Description

• The battery should be fully charged before long-distance travel. Rugged road conditions and hilly terrain will consume more energy.
• Carrying more weight on an electric bicycle will consume more energy.
• When an electric bicycle runs at low temperature, its cruising range will be reduced.
• When the battery is turned off, your electric bike will be used as an ordinary bike.

Pattern Description

Describes three riding patterns:

• Electric Drive: Key opened, instrument opened, switch twisted. The electric bicycle is driven by electricity.
• Pedal Assist: Key turned on, instrument turned on. The electric auxiliary mode is started, driven by manpower and electric power.
• Manual Power: Riding an electric bicycle, the electric bicycle is driven by manpower.

In pedal assist mode, assist is triggered when the pedal is pressed forward and stops when the pedal stops. When you brake, the power assist system will automatically stop, allowing the e-bike to slow down and stop. When the e-bike reaches the maximum speed of the selected gear, the power assist will turn itself off.

Motor Description

When the electric bicycle starts, the input current of the drive motor is large, and the motor will have a certain noise to overcome resistance and reach speed. This is the friction sound of current torque and magnetic force, which is a normal phenomenon. If the starting current increases, the noises will be more obvious. This is normal and does not affect use. (Note: When starting, accelerate slowly; the starting current and noise will be smaller, which is also beneficial to battery life).

After-Sales Service

Not Covered by Warranty

• The warranty period has expired.
• Commercial rental is not warranted.
• Gifts are not covered by the warranty.
• Damage caused by unauthorized modification, disassembly, and replacement of accessories.
• No warranty for parts damage caused by improper use, crash, injury, water inflow, or overload use by users.
• Due to changes in factory batches or upgraded parts of electric bicycles, there is no prior notice.