Engwe L20 3.0 Pro Electric Bike User Manual

Safety Instructions

This manual provides common sense and maintenance methods for electric assist bicycles. For an optimal riding experience, please read and understand the product's performance, features, precautions, and maintenance advice. For problems, please contact the official after-sales service team or an authorized local service station promptly for a solution.

Safety Precautions:

1. Understand and respect the safety instructions in this manual to significantly reduce risks. In public spaces, comply with all national and local laws and regulations. Stay vigilant while riding and maintain a safe distance from others and vehicles.
2. The electric bicycle must be used according to the manual's directives. The user is responsible for any loss resulting from non-compliance.
3. According to CE15194 standard, this product is an electric assist cycle. You must pedal to get electric assistance. Below 6 km/h, you can use the push mode without pedaling; above 6 km/h, you must pedal to get motor assistance.
4. This product is not designed for professional off-road riding. Do not use it for all-terrain mountain biking to avoid the risk of falls due to insufficient performance for off-road riding.
5. For your first ride, choose a private area without traffic. Once comfortable, you can venture onto public roads.
6. Before each ride, check that all fastenings are tight and parts are not damaged. If the product emits abnormal noises, stop riding immediately and seek assistance from official after-sales service for diagnosis.
7. Avoid exceeding the speed limit. Never ride in areas with motor vehicles, regardless of circumstances.
8. For safety reasons, users under 16 years of age are strictly prohibited from using this product. Use is prohibited in the following situations:
   • Persons under the influence of alcohol or drugs.
   • Persons unable to participate in intense physical activities due to illness.
   • Persons unable to maintain balance or who have difficulty maintaining balance due to underdeveloped motor skills.
   • Persons whose weight exceeds the limit (see section 2.1.1 for weight limit).
   • Pregnant women.
9. Be cautious when using this product in adverse weather conditions such as snow, rain, slippery roads, or ice, as braking distance may increase.
10. Do not attempt to charge this product if the charger or power supply is wet. When charging in public spaces, respect local safety laws and regulations.
11. To effectively protect and use your electric bicycle easily, always use officially specified parts. Otherwise, unpredictable dangerous situations may occur due to incompatibility, especially with electronic parts like batteries and motors.
12. If you wish to modify your electric bicycle, consult the official after-sales team and proceed with caution, ensuring compliance with local laws and regulations. The manufacturer assumes no responsibility for injuries or damage caused to the bicycle resulting from unauthorized modifications. (Changing any unofficial electrical component or non-standard mechanical parts like chains/brakes, etc., will be considered unauthorized).
13. To minimize the risk of injury, ensure you read and follow all prompts, including "Attention", "Danger", and "Warning" in the owner's manual.

Danger: Ignoring this warning may result in bodily injury. To minimize risks to yourself and others, this notice specifies measures to take or avoid!

Warning: Ignoring this warning may result in damage to the bicycle and its components. This notice specifies measures to take or avoid!

Attention: Ignoring this warning may result in minor damage to the bicycle or alter its normal operation. This notice specifies measures to take and not to take.

1. Introduction des produits

1.1 Liste de colisage

The product package typically includes:

• User Manual
• 8A Charger
• Wrenches (e.g., 8-10, 13-15, 14-15 sizes)
• Screwdrivers (e.g., M4, M5, M6 sizes)
• Air Pump
• Spare Parts Pack
• 2 Pedals
• Saddle
• Handlebar (folding stem and vertical tube)
• Fender
• Kickstand
• Main frame body
• Front wheel

1.2 Description des composants

The Engwe L20 3.0 Pro electric bike consists of the following main components:

• Handlebar
• Vertical tube
• Quick release clamp for handlebar tube
• Folding handlebar tube
• Saddle
• Seat tube
• Quick release seat tube
• Rear light
• Rear fender
• Rear rack
• Rear brake
• Electric motor
• Reflector
• Wheel
• Rear derailleur
• Chain
• IOT Module
• Front headlight
• Front fender
• Front wheel
• Battery compartment
• Suspension fork
• Folding stem
• Chainring
• Crank
• Pedal

1.3 Description des fonctions

The handlebar controls and display are designed for easy operation:

• Handlebar Controls: Front brake lever, rear brake lever, horn button, power switch, cycling data button (i), assist mode buttons (+/-), speed indicator, speed handle.
• Display Screen: Shows lights status, location indicator, battery level, speed, push mode status, and cycling data (trip, odometer, etc.).

Common Functions:

1. Power On/Off: Press and hold the power button for 2 seconds to turn on, and press and hold for 2 seconds to turn off.
2. Assist Speed Adjustment: Press the +/- buttons to adjust the assist speed level.
3. Assist Mode (Push Mode): Press and hold the assist button to activate the push assist mode (6 km/h). Releasing the button stops the assist mode. The display shows an assist mode icon.
4. Horn: Press the horn button to sound the alert.
5. Headlight Switch: Press the '+' button for approximately 2 seconds to turn on the lights. Pressing '+' again turns off the lights. This action also affects the instrument's brightness.
6. Riding Data Switch: When the instrument screen is on, it displays real-time speed and the trip meter by default. Press the 'i' button to cycle through display information such as trip meter, odometer, maximum speed, and average speed.
7. Error Code Indication: If the electric bicycle's electronic control system fails, the instrument will automatically display an error code. Refer to section 3.3 Error Codes for definitions.

2. Prise en main

2.1 Guide d'installation

2.1.1 Installation Warnings

Warning: Two people are required for disassembly and installation. Before installation, ensure the system is turned off and will not be accidentally activated.

Maximum Load: The maximum load capacity is 150KG. This is illustrated by a diagram showing a backpack + trailer + person being less than or equal to 150KG.

2.1.2 Unpacking Guide

The unpacking process involves carefully opening the box, lifting the product, and removing it from the packaging. It is important to hold the product to prevent it from tipping over during removal.

2.1.3 Installation du cockpit (Handlebar Installation)

Warning: Clockwise rotation tightens, counter-clockwise rotation loosens.

Steps involve inserting the stem into the head tube, securing it with M5 screws (tightening to 12-15 Nm), ensuring the handlebar is centered and perpendicular to the top tube, and checking that the safety line on the seatpost is not exposed.

2.1.4 Installation du pare-boue avant et de la béquille (Front Fender and Kickstand Installation)

Steps include protecting the instrument screen, removing screws (M4, 10) and nuts for reserve, attaching the front fender using M4 screws, and securing the kickstand and fender bracket with M5 screws (tightening to 5-8 Nm and 12-15 Nm respectively).

2.1.5 Installation des roues (Wheel Installation)

Steps involve removing components, checking tire pressure, and attaching the wheels using 15mm nuts, tightened to 25-30 Nm. A warning about the direction of tightening is provided.

2.1.6 Installation et réglage de la selle (Saddle Installation and Adjustment)

Ensure the safety line on the seatpost is not exposed. The seat height scale is indicated (0 for highest, 10 for lowest). To adjust, sit on the saddle with hips level, turn pedals to perpendicular, and place heels on pedals. If knees are straight, the saddle height is correct. The saddle can also be adjusted forward-backward and by angle.

2.1.7 Installation de phares (Headlight Installation)

Steps involve attaching the headlight bracket using an M5 screw and then securing the headlight itself with another M5 screw (6-10 Nm tightening torque). A warning about the direction of tightening is provided.

2.1.8 Installation pédale (Pedal Installation)

Distinguish left (L) and right (R) pedals. Install pedals using M6 screws and tighten to 35-40 Nm.

2.1.9 Gonflage des pneus (Tire Inflation)

The tires are deflated for transport. Remove the valve cap, inflate the tires to the recommended pressure before riding, and then reinstall the valve cap. The final step shows the fully assembled bike.

2.1.10 Résultats finaux (Final Results)

Congratulations! Your bike is equipped and ready.

2.2 Pliage (Folding)

The folding process involves unlocking the handlebar stem, folding it, unlocking and inserting the seatpost to lock it, unlocking the frame latch, and then folding the frame.

2.3 Retirer la batterie (Battery Removal)

Remove the dust cap. Remove the battery key. Ensure the battery is installed correctly. When removing the battery, do not drop it or cause collisions. The battery contains composite materials; in case of severe shock (e.g., car accident), return it for inspection or disposal/replacement (paid).

2.4 Charge

Two charging methods are available:

1. Charge the battery directly on the frame.
2. Remove the battery for charging (refer to section 2.3).

Note: The battery has a minimal charge from the factory. Charge it fully before first use. Use only the original manufacturer's charger. Non-original chargers may damage the battery.

Steps:

1. Before Charging: Ensure a dry, well-ventilated charging environment. Check that the charger plug and socket are dry and free of foreign objects. Avoid charging in direct sunlight. Ensure the charging environment temperature is between 5°C and 30°C, and there are no flammable materials nearby.
2. Start Charging: Insert the charger connector fully into the battery's charging port, then plug the charger into the power outlet.
3. Indicator Status: A red light on the charger indicates charging is in progress. A green light indicates the battery is fully charged. Blinking green means the battery is ready to charge but not outputting power. Blinking red indicates a fault.
4. Charging Time: Approximately 2 hours.
5. End of Charge: First, unplug the power adapter, then remove the charger connector from the battery. If charging on the frame, close the battery's dust cap. If charging the removed battery, reinsert and secure it in the frame, then close the dust cap.

Note: The charger contains high voltage. Unauthorized repairs are strictly prohibited due to the risk of danger. Store the battery and charger in a safe, well-ventilated, dry place, out of reach of children and away from flammable, explosive, or dangerous objects. Do not charge outdoors to prevent accidents like short circuits or fires caused by rain.

Warning: If you detect an unusual odor or if the battery or charger becomes excessively hot during charging, stop charging immediately and contact the after-sales team.

2.5 Activation De La Batterie

Activate the battery before first use:

1. Charge according to section 2.4.
2. Once the green light blinks and the red light remains solid, wait approximately 10 seconds for battery activation to complete.

For the first use, it is recommended to charge for about 30 minutes for a longer initial ride.

Why Activate the Battery:

The bike uses an advanced BMS (Battery Management System) to protect battery cells and prolong its lifespan. The BMS automatically enters battery sleep mode during transport or periods of non-use. Sleep conditions are based on battery capacity thresholds and time elapsed.

If the bike cannot be turned on after a long period of non-use, connect the charger first to activate the battery.

2.6 Utilisation Rapide

Before using the product, follow the installation guide, check component fastenings, ensure sufficient energy, and take appropriate protective measures.

Step 1: Adjust Handlebar and Saddle

Adjust the handlebar and saddle to a suitable height based on your size, ensuring quick-release clamps are securely fastened. It is recommended to adjust the handlebar for comfortable riding posture and the saddle to hip level, ensuring the height does not exceed the safety line.

Step 2: Power On and Front Light Adjustment

1. Turn on the battery.
2. Press the power button for 2 seconds; the screen will light up.
3. Press the '+' button for approximately 2 seconds to turn on the headlight. Adjust the headlight to illuminate the area up to 10 meters ahead.

Step 3: Mode Adjustment

Select the riding mode based on road conditions and personal needs. The bike has 5 assist modes. Press the mode button (+/-) to switch between levels. Level 1 is suitable for relatively flat roads; higher levels are for steeper inclines. When the bike is in PAS 0 mode, assist is not active, and it functions as a normal bicycle.

Step 4: Riding on the Road

Please wear a helmet before riding on the road.

Step 5: Braking Instructions

The left brake lever controls the front wheel, and the right lever controls the rear wheel. Use the rear brake first, then the front brake, to slow down the bicycle until it stops. Attention: Avoid applying the front brake suddenly alone, as this can easily destabilize the bike's center of gravity and lead to a fall.

Noise Declaration: The weighted A emission sound pressure level at the rider's ear is less than 70 dB(A).

2.7 Réglages de l'instrument

If the default settings do not meet your needs, follow these steps to personalize your settings:

1. Enter Custom Settings: With the bike powered on, press and hold the '+' and '-' buttons simultaneously for more than 2 seconds, or press and hold the 'i' button for 2 seconds (refer to schema 1).
2. Select a Parameter: Press the +/- buttons to choose different setting options.
3. Adjust Option: Press the 'i' button to enter a selected parameter, then use the +/- buttons to adjust the choice, and press 'i' again to confirm.
4. Parameter Descriptions:
   • a. Toggle Unit: Change the mileage unit (e.g., km/miles).
   • b. Brightness: Adjust the screen brightness.
   • c. Password Enable:
     • i. Select 'yes' to enable a password. Press +/- to choose numbers, then press 'i' to confirm. After confirming 4 digits, re-enter the password. The correct password must be entered to access the main interface and adjust assist settings (refer to schema 2).
     • ii. To reset your password, change the password activation setting from 'yes' to 'no', then set a new password as described in 4.c.i.
   • d. Factory Reset: Click 'i' to access the reset interface. Select 'yes' to erase all personal settings.
5. Exit Settings:
   • Method 1: Press the '+' and '-' buttons for 2 seconds.
   • Method 2: Press the 'i' button for more than 2 seconds to save settings and exit.
   • Method 3: Select 'Back' at the bottom of the interface and press 'i' to exit.
   • Method 4: The screen will automatically exit the configuration interface after 1 minute of inactivity.

3. Guide d'entretien

3.1 Précautions d'emploi

Safety in the use of electric assist bicycles:

1. Electric assist bicycles must not be parked in building entrances, escape stairs, walkways, or safety exits.
2. Do not charge or park your electric assist bicycle in a residential building. Keep it away from combustible materials when charging, and do not charge for excessively long periods, generally not more than 12 hours.
3. Avoid water penetration into electrical parts. When washing the bicycle, prevent water from contacting the charging port, harness connectors, and other electrical parts.
4. When adjusting the seat height and seatpost, ensure the safety lines marked on the seat and seatpost are not exposed.
5. Users and dealers are prohibited from modifying the bicycles privately. Modifications such as changing the battery configuration, altering wiring, increasing motor power, or adding audio systems are not permitted.
6. Do not touch live electrical components of the electric bicycle with wet hands or metal objects. Examples include the battery interface, battery charging port, and charger connector.
7. Do not disassemble electrical components without authorization to prevent liquid and metal chips from entering the components.
8. Do not expose the bicycle to prolonged sunlight or rain to prevent aging of parts.
9. If the bicycle needs cleaning, wipe the frame with water mixed with a neutral detergent. Do not rinse internal parts with water to avoid short circuits.
10. Do not touch hot surfaces after frequent use, such as disc brakes or the motor, to avoid burns.

Note: Non-professionals are strictly prohibited from performing maintenance. In case of a malfunction, contact customer service or visit a designated professional maintenance station.

Riding Safety: Respect national and local traffic rules and pay attention to riding safety.

1. It is strictly prohibited for persons under 16 years of age to ride electric assist bicycles on the road or to lend them to individuals who do not know how to operate them, to avoid danger.
2. Please use non-motorized lanes and do not exceed the maximum speed limit stipulated by local legislation.
3. Electric assist bicycles must carry persons or objects in accordance with the law.
4. Always wear an appropriate safety helmet and fasten your helmet's chin strap when riding.
5. In rainy or snowy weather, braking distance will increase; please slow down. Avoid riding in adverse weather conditions, such as heavy rain.
6. Strictly adhere to traffic rules. Do not ride while intoxicated, with one hand, or with both hands off the handlebars.
7. During riding, try to wear bright-colored clothing with non-flared sleeves that allow good freedom of movement, and preferably wear low-heeled or sports shoes.

On-Road Precautions:

1. For your safety and the safety of others, strictly adhere to traffic rules.
2. You must wear a safety helmet before riding and take other relevant safety measures.
3. When starting the vehicle for the first time, accelerate slowly to avoid losing control due to rapid acceleration.
4. In rainy or snowy weather, you must increase the braking distance appropriately and concentrate on cautious, slow riding to avoid skidding and falls.
5. Before stopping, please lower the push assist mode level for the next ride.

Pre-Ride Inspection:

1. Power on the device. Check that the instrument indicators are normal and that the power supply is sufficient.
2. Verify that the front and rear lights are functioning correctly and that the front light illuminates at a normal angle.
3. Check that the electric assist bicycle's horn is in good condition.
4. Verify that the handlebar and seatpost are adjusted to the correct position and that the fixing screws (or quick releases) are securely tightened.
5. Check the brake levers. Brake adjustment should ensure reliable braking and flexible return. The rear lights should illuminate when you brake.
6. Check the normal tire pressure, look for abnormal cracks or wear, and ensure no sharp objects like nails, stones, or glass are embedded.
7. Verify that the wheel screws are tightened and that the caliper reflectors are not missing, broken, or contaminated.

Pushing and Parking Precautions:

1. Turn off the switch when pushing the bicycle to avoid accidents caused by involuntary rotation of the accelerator while pushing.
2. When pushing uphill or with a heavy load, you can activate the push mode.
3. When parking the bicycle, place the footrests on a flat surface and turn off the power.
4. Please maintain and clean your bicycle regularly to keep it in perfect condition.

3.2 Entretien et auto-inspection

Bicycle and Self-Inspection:

1. The electric bicycle has been adjusted before leaving the factory. If you have any questions, please contact the manufacturer or supplier.
2. Always check tire pressure to maintain it within the normal range.
3. Regularly check and adjust main components such as the handlebar, folding stem, saddle, seatpost, front and rear axles, bottom bracket, pedals, chain, and front and rear wheels to ensure transmission parts are flexible and free of anomalies. Loose nuts or bolts should be tightened promptly.
4. It is recommended to lubricate parts such as the front axle bearing, bottom bracket bearing, rear axle bearing, fork headset, and pedal bearings with calcium-based grease (#3) every six months during use. Add #30 oil to the chain, derailleur cable, kickstand, and other parts approximately every two months.
5. If worn parts such as brake pads, chain, or tires are found to be damaged, they can be replaced with parts of the same model and specification at a nearby maintenance center.
6. Do not use high-pressure water jets or short-range steam jets to clean your electric bicycle. Do not wipe the battery and battery interface with a damp cloth or paper towel.

Motor Maintenance:

1. Do not open the motor base or end cover after it has been sealed.
2. The motor must be kept clean, free from foreign objects, corrosive liquids, or gases. The motor housing should not be struck or overheated to avoid damaging the motor.
3. The motor's waterproof rating is IPY5. Do not rinse the motor with a water gun or immerse it in water. If the water level reaches the motor hub center, it may cause an internal short circuit of the bicycle and damage the electrical components.

Battery Maintenance:

1. The lithium battery has a large capacity, long service life, and light weight. Its lifespan is closely related to your usage method. Do not use the bicycle until the battery is low. Avoid storing the bicycle for long periods. Make it a habit to charge it frequently.
2. Charge the bicycle fully for the first time. It is recommended to charge the bicycle for 2 hours each time, but not more than 8 hours.
3. If the bicycle is not used for an extended period, it is necessary to charge the lithium battery for more than 2 hours per month. It is strictly prohibited to store the bicycle with the battery in a low-voltage state. Once the battery reaches a low-voltage state, it will be subject to significant and irreversible damage.

Danger: Do not arbitrarily disassemble used batteries. They must be recycled in accordance with the designated location by local authorities or the company's specialized repair center.

Warning: The battery must not be placed near open flames or high-temperature heat sources. It must not be thrown into fire, and it is strictly prohibited to expose it to the sun in hot weather.

3.3 Méthodes de vérification des défauts et de dépannage

General Troubleshooting Methods:

Error Codes:

ENGWE electric assist bicycles are equipped with a fault detection system. If the electrical system does not function correctly, the instrument will display an error code. Below are common error codes that may help you resolve issues. If an error code appears, stop operation immediately and contact ENGWE after-sales service.

3.4 Précautions Concernant La Cage Du Dérailleur Arrière

Warning: Clockwise rotation tightens, counter-clockwise rotation loosens.

If you ride in off-road environments such as mountains, this protective frame is used to protect the rear derailleur from impacts in extreme riding conditions. This protective cage is optional.

If you need to install it, please visit an official sales point and use professional tools for installation under professional guidance. Do not use the tools provided in the packaging for installation, nor install it yourself, as this may lead to issues.

4. Guide des services

4.1 Service après-vente et couverture de garantie

Warranty Policy:

1. The user must use the product in accordance with the instructions in this manual. In case of performance defects due to manufacturing quality reasons, the company commits to fulfilling warranty obligations according to consumer protection laws.
2. For failures outside the warranty period and for main components after the warranty period, the company is responsible for repairs, but fees may apply depending on the case.
3. For battery replacements after the warranty period, the company will provide batteries at cost price, but old batteries must be returned one by one to the battery manufacturer to ensure safety and prevent environmental pollution.

Warranty Coverage and Duration:

Note: The limited warranty does not apply to subsequent owners or any other assignees of the electric assist bicycle.

4.2 Carte de garantie et dossiers d'entretien

Warranty Description:

1. Parts are warranted strictly for the duration of the warranty.
2. The warranty takes effect from the date of purchase.
3. The warranty will not be granted if the charger, battery, or motor are privately disassembled.
4. For other parts of the bicycle assembly, there is no warranty, except for a three-month period due to quality issues.
5. When other accessories of the bicycle assembly fail, repairs must be carried out at a professional repair center and should not be privately disassembled. Controllers, batteries, and chargers must bear an intact label.
6. The warranty card, invoice, conformity certificate, and other valid proof of purchase must be presented for bicycle assembly repairs.
7. The battery warranty is a "one-for-one" warranty. In case of a problem, you must first return the battery to the manufacturer, in accordance with battery testing standards, to determine if it is covered by the warranty, and then it will be repaired.

Warranty Card:

Maintenance Records:

4.3 Tableau des paramètres des produits

Product Parameters:

*The maximum range is measured under optimal conditions: full battery, 75 kg load, 25°C temperature, 70% humidity, on a flat surface, in assist level 1. Actual results may vary depending on push mode, temperature, load, wind speed, road conditions, and other factors.