1. Informació important de seguretat
Read this manual thoroughly before operating the ENGWE L20 BOOST Electric Bike. Failure to follow instructions can result in serious injury or property damage.
- Porteu sempre casc i equip de seguretat adequat quan conduïu.
- Compliu totes les lleis i regulacions de trànsit locals.
- No conduïu sota els efectes de l'alcohol o les drogues.
- Ensure the battery is fully charged and securely installed before each ride.
- Regularly check tire pressure, brakes, and all fasteners.
- Eviteu conduir en condicions meteorològiques adverses (pluja intensa, neu, gel).
- Do not exceed the maximum weight capacity of the bike.
2. Contingut del paquet
Verifiqueu que tots els elements estiguin presents en desempaquetar:
- ENGWE L20 BOOST Electric Bike (partially assembled)
- Battery (48V 13Ah)
- Carregador de bateria
- Manual d'usuari (aquest document)
- Eines de muntatge
- Suport de peu
- Additional spare bolts and brake pads

Image: The ENGWE L20 BOOST Electric Bike, showcasinel seu disseny general i els seus components.
3. Muntatge i muntatge
The ENGWE L20 BOOST Electric Bike comes 85% pre-assembled. Follow these steps for final assembly:
- Unboxing: Traieu amb cura la bicicleta i tots els components de l'embalatge.
- Instal·lació del manillar: Fixeu el manillar a la potència, assegurant-vos que estigui centrat i ben ajustat.
- Instal·lació de pedals: Identify left (L) and right (R) pedals. Thread them into the crank arms. Note that the left pedal is reverse-threaded. Tighten firmly with a wrench.
- Front Wheel Installation (if not pre-installed): Secure the front wheel into the fork dropouts. Ensure the disc brake rotor is correctly aligned with the caliper.
- Ajust de la tija del seient i del seient: Insert the seat post into the frame and adjust the saddle height for comfortable riding. Ensure the quick-release lever is securely closed.
- Instal·lació de la bateria: Insert the battery into its compartment and ensure it clicks securely into place.
- Comprovacions prèvies a la cursa: Before your first ride, perform a thorough check of all bolts, nuts, and quick releases to ensure they are tight. Check tire pressure and brake function.

Imatge: Més deview of key components and features, useful for identifying parts during assembly.
4. Instruccions de funcionament
4.1. Carregant la bateria
To charge the 48V 13Ah removable battery:
- Connect the charger to the charging port on the battery or directly to the bike if the battery is installed.
- Connecteu el carregador a una presa de corrent estàndard.
- El llum indicador del carregador mostrarà l'estat de càrrega (per exemple, vermell per a la càrrega, verd per a la càrrega completa).
- Una càrrega completa triga aproximadament 6.5 hores.
- No sobrecarregueu la bateria. Desconnecteu el carregador un cop finalitzada la càrrega.
4.2. Powering On/Off and Display
The bike features a clear LCD display:
- Encès: Press and hold the power button on the display unit.
- Apagar: Premeu i manteniu premut el botó d'engegada de nou.
- The display shows speed, battery level, pedal assist level, and other ride data. Refer to the display's specific manual for detailed functions.

Imatge: Detallada view of the motor and power-boost button mechanism.
4.3. Riding Modes and Boost Function
The ENGWE L20 BOOST offers various riding modes:
- Sistema d'assistència de pedals (PAS): The intelligent torque sensor automatically adjusts motor assistance based on your pedaling force. Use the controls on the handlebar to select different PAS levels (e.g., 1-5).
- Throttle Mode (if applicable): Some models may include a twist grip throttle for pure electric power without pedaling. Use responsibly.
- BOOST Function: Press the dedicated BOOST button for a spontaneous power boost, ideal for inclines or quick acceleration. This provides 75Nm of torque.

Image: Demonstrates the bike's ability to handle inclines with the boost function.

Image: Visual explanation of the boost button's effect on uphill riding.
4.4. Canvi de marxes
The bike is equipped with a 7-speed Shimano gear system:
- Use the gear shifter on the handlebar to change gears.
- Shift to a lower gear for easier pedaling on inclines.
- Shift to a higher gear for faster speeds on flat terrain.
- Always pedal lightly when shifting gears to ensure smooth transitions and prevent damage to the drivetrain.

Image: Detail of the gear shifter for speed control.
4.5. Frenatge
The ENGWE L20 BOOST features mechanical disc brakes:
- The left lever controls the front brake, and the right lever controls the rear brake (standard UK configuration).
- Apply both brakes simultaneously for effective and safe stopping.
- Avoid sudden, hard braking, especially with the front brake, as this can lead to loss of control.
- Brake performance may be reduced in wet conditions.

Image: Illustrates the safety features including lights and disc brakes.
5. Manteniment
Regular maintenance ensures the longevity and safe operation of your e-bike:
- Neteja: Netegeu la bicicleta regularment amb anuncisamp drap. Eviteu rentar directament els components elèctrics a alta pressió.
- Pneumàtics: Check tire pressure before each ride. Recommended pressure is usually indicated on the tire sidewall. Inspect tires for wear and damage.
- Frens: Regularly check brake pads for wear and replace them when necessary. Ensure brake levers are firm and responsive. Adjust brake cables if needed.
- Cadena: Mantingueu la cadena neta i lubricada per garantir un canvi suau i evitar l'oxidació.
- Elements de fixació: Periodically check all bolts, nuts, and quick releases for tightness. Loose components can lead to accidents.
- Cura de la bateria: Store the battery in a cool, dry place. If storing for extended periods, charge it to about 50-70% and recharge every 2-3 months.
- Servei professional: It is recommended to have your e-bike professionally inspected and serviced at least once a year.
6. Solució De Problemes
Problemes comuns i les seves solucions:
| Problema | Causa possible | Solució |
|---|---|---|
| La bicicleta no s'encén | Battery not charged, battery not properly seated, loose electrical connection. | Charge battery, ensure battery is securely installed, check all visible connections. |
| El motor no ajuda | PAS level too low, battery low, motor connection issue, sensor malfunction. | Increase PAS level, charge battery, check motor cable, consult professional. |
| Els frens es senten febles | Pastilles de fre desgastades, cable de fre solt, aire al sistema hidràulic (si escau). | Inspect/replace pads, adjust cable tension, seek professional brake service. |
| Les marxes no canvien suaument | Dirty/dry chain, misaligned derailleur, bent hanger. | Clean and lubricate chain, adjust derailleur, consult bike shop for bent hanger. |
7. Especificacions
Key technical specifications for the ENGWE L20 BOOST Electric Bike:
- Model: ENGWE L20 BOOST
- Motor: 48V/250W Brushless Motor with BOOST function (75Nm torque)
- Bateria: 48V 13Ah Removable Lithium-ion Battery
- Interval: Up to 126 km (in PAS mode 1, tested under specific conditions)
- Temps de càrrega: Aproximadament 6.5 hores
- Pneumàtics: Pneumàtics gruixuts de 20" x 4.0"
- Engranatges: Shimano de 7 velocitats
- Frens: Mechanical Disc Brakes (160mm)
- Material del marc: Aliatge d'alumini
- Suspensió: Suspensió davantera
- Visualització: LCD Display (shows speed, battery, PAS level)
- Alçada recomanada del genet: 55-185 cm (adjustable saddle/handlebars)
- Components inclosos: Suport de peu

Image: Comparative specifications table for the ENGWE L20 BOOST.
8. Garantia i Suport
ENGWE provides comprehensive support for your electric bike:
- Garantia: A one-year warranty is provided on the motor, battery, and controller.
- Atenció al client: Our customer service team is available 24/7 to assist with any questions or concerns.
- For support, please refer to the contact information provided on the official ENGWE weblloc web o la documentació de la compra.





