Fafrees FF20 Polar
Manual del usuario de la bicicleta eléctrica plegable Fatbike Fafrees FF20
Marca: Fafrees | Modelo: Polar FF20
1. Información importante de seguridad
Please read this manual carefully before operating your Fafrees FF20 Electric Fatbike. Failure to follow instructions and safety warnings may result in serious injury or damage to the product.
- Utilice siempre casco y equipo de seguridad adecuado al conducir.
- Asegúrese de que todos los componentes estén bien fijados y en buen estado de funcionamiento antes de cada viaje.
- No conduzca bajo la influencia del alcohol o las drogas.
- Familiarícese con las leyes y regulaciones de tránsito locales.
- Sea consciente de su entorno y conduzca defensivamente.
- No supere la capacidad de carga máxima de 150 kg.
- Importante: Note down your bike's frame number. This unique identifier is crucial for identification in case of theft or other issues. The frame number is typically located under the bike's frame.
2. Producto terminadoview
The Fafrees FF20 Polar is a versatile folding electric fatbike designed for various terrains and comfortable riding. It features a robust aluminum frame and powerful electric assistance.
Características principales:
- Sistema de batería dual: Equipped with two 48V 10.4Ah batteries, offering an extended range of up to 160 km in PAS mode. The dual battery equalizer optimizes current distribution for increased battery life and mileage.
- Powerful Hub Motor: A 65 N.m hub motor provides strong climbing capabilities and efficient power delivery.
- Pantalla LCD a color: A high-resolution LCD screen displays essential riding data such as speed, battery level, mileage, and current speed. It includes 5 predefined speed levels, cruise control, and walk assist functions.
- Viaje cómodo: Features a 40mm suspension fork, high-volume fat tires, and durable padding to absorb shocks and ensure a smooth ride.
- CHAOYANG 20x4.0 Fat Tires: These tires provide increased friction and adaptability to various riding conditions, including flat terrain, snow, sand, mud, and gravel roads.
- Frenos de disco dobles: Powerful 160mm front and rear disc brakes with power-off levers ensure effective and safe stopping, even on loose surfaces.
- Quick Fold Design: The bike can be folded into an ultra-compact size for easy transport and storage, making it ideal for commuting and travel.
- Iluminación integrada: Features a super bright 15W front light and a 5W rear brake light for enhanced visibility and safety during night rides.
Dimensiones y peso del producto:
- Dimensiones (L x An x Al): 179 x 68 x 121 cm (desplegado)
- Peso neto: 34 kilogramos
- Capacidad de carga máxima: 150 kilogramos
- Altura recomendada del ciclista: 160-200 centímetros

Figure 2.1: The Fafrees FF20 Folding Electric Fatbike in red, showcasing its robust design and included rear bag.

Figure 2.2: Detailed dimensions of the FF20 Polar electric fatbike, including folded and unfolded measurements, rider height, maximum load, and bike weight.
3. Configuración y montaje
Your Fafrees FF20 Polar electric fatbike comes partially assembled. Follow these steps for final assembly and initial setup.
3.1 Desembalaje e inspección inicial
- Retire con cuidado la bicicleta y todos los componentes del embalaje.
- Check for any visible damage during transit. Contact customer support immediately if you find any.
- Verify all included components are present: Fafrees FF20 Polar Electric Bike, Battery Charger, Tool Kit, User Manual.
3.2 Handlebar and Seatpost Installation
- Unfold the bike frame (refer to section 4.4 for folding/unfolding).
- Insert the handlebar stem into the fork tube and tighten the quick-release lever or bolts securely. Ensure the handlebar is aligned with the front wheel.
- Insert the seatpost into the seat tube. Adjust the seat height to a comfortable riding position, ensuring your feet can touch the ground when stopped. Secure the quick-release lever.
3.3 Instalación y carga de la batería
The FF20 Polar features a dual battery system. Both batteries should be fully charged before the first use.
- Locate the battery compartments. One battery is typically integrated into the frame, and the other may be externally mounted or in a separate compartment.
- Ensure batteries are securely seated and locked into place if removable.
- Connect the charger to a power outlet and then to the bike's charging port.
- El indicador de carga del cargador mostrará el estado de carga (por ejemplo, rojo para cargando, verde para completamente cargado).
- El tiempo de carga puede variar, pero normalmente toma varias horas para una carga completa.
- Always use the original Fafrees charger provided with your bike.

Figure 3.1: Illustration of the Fafrees FF20's dual 48V 10.4Ah battery system, highlighting the main and second battery locations and their combined capacity for extended range.
3.4 Controles previos al viaje
- Llantas: Check tire pressure. The recommended pressure is usually indicated on the tire sidewall.
- Frenos: Pruebe los frenos delanteros y traseros para asegurarse de que funcionen correctamente y detengan la bicicleta de manera efectiva.
- Luces: Verify that the front and rear lights are functioning.
- Liberaciones rápidas: Ensure all quick-release levers (seatpost, handlebar, folding mechanism) are securely tightened.
4. Instrucciones de funcionamiento
4.1 Encendido/apagado y pantalla LCD
To power on the bike, press and hold the power button on the LCD display. The display will illuminate, showing various riding parameters.
- Botón de encendido: Press and hold to turn the system on/off.
- Mode/Assist Level Buttons: Use the '+' and '-' buttons to cycle through the 5 predefined pedal-assist levels (PAS). Higher levels provide more motor assistance.
- Información de la pantalla: The LCD shows current speed, battery charge level, trip distance, total distance, and selected assist level.

Figure 4.1: The LCD color display of the Fafrees FF20, showing power, speed, driving mode, range, trip distance, and total distance indicators. Also illustrates cruise control and walk assist functions.
4.2 Modos de conducción
- Sistema de asistencia al pedaleo (PAS): The motor provides assistance as you pedal. There are 5 levels of assistance. The range can be up to 160 km depending on the assist level, terrain, and rider weight.
- Modo eléctrico (acelerador): If equipped, the throttle allows you to ride without pedaling. The range in pure electric mode is typically 95-115 km.
- Modo manual: Conduce la bicicleta como una bicicleta tradicional sin ninguna asistencia de motor.
4.3 Funciones especiales
- Control de crucero: Maintain a fixed speed for 8 seconds, and the bike will automatically enter cruise control mode, freeing your fingers.
- Modo de asistencia al caminar: Press and hold the minus button to activate walk assist, which helps you push the e-bike at a slow speed (e.g., 6 km/h). Do not use this function while riding.
4.4 Plegado y transporte
The Fafrees FF20 is designed for quick and easy folding.
- Step 1: Fold the Frame: Locate the folding latch on the main frame and release it. Carefully fold the frame in half.
- Step 2: Fold the Handlebar: Release the quick-release lever on the handlebar stem and fold the handlebar down.
- Ensure all folding mechanisms are securely latched when unfolded for riding and properly secured when folded for transport.

Figure 4.2: Visual guide demonstrating the two main steps for folding the Fafrees FF20 electric fatbike: folding the frame and folding the handlebar, making it easy to transport.
5. Mantenimiento
Regular maintenance ensures the longevity and safe operation of your Fafrees FF20 Polar electric fatbike.
5.1 Cuidado de la batería
- Charge batteries regularly, even if the bike is not in use, to maintain battery health.
- Evite descargar completamente la batería antes de recargarla.
- Store the bike and batteries in a cool, dry place, away from direct sunlight and extreme temperatures.
- Si va a almacenarlo durante un período prolongado, cargue la batería hasta aproximadamente el 50-70 % y revísela periódicamente.
5.2 Mantenimiento de neumáticos
- Verifique periódicamente la presión de los neumáticos e infle al PSI recomendado (indicado en el costado del neumático).
- Inspeccione los neumáticos para detectar desgaste, cortes o pinchazos antes de cada viaje.

Figure 5.1: Close-up of the CHAOYANG 20x4.0 fat tire, illustrating its robust tread pattern suitable for various terrains including snow, sand, mud, gravel, and flat roads.
5.3 Sistema de frenos
- Compruebe el desgaste de las pastillas de freno y reemplácelas cuando sea necesario.
- Asegúrese de que las palancas de freno respondan correctamente y proporcionen la potencia de frenado adecuada. Ajuste la tensión del cable si es necesario.
5.4 Limpieza y lubricación general
- Limpie la bicicleta periódicamente con adamp paño. Evite utilizar hidrolavadoras directamente sobre componentes eléctricos.
- Lubrique la cadena y otras partes móviles periódicamente para garantizar un funcionamiento suave y evitar la oxidación.
6. Solución de problemas
This section provides solutions to common issues you might encounter with your Fafrees FF20 Polar electric fatbike.
Problemas comunes y soluciones:
- La bicicleta no enciende:
- Compruebe si la batería está correctamente instalada y cargada.
- Asegúrese de que todas las conexiones eléctricas estén seguras.
- El motor no asiste:
- Verify the pedal-assist level on the LCD display is not set to zero.
- Compruebe que las palancas de freno estén completamente liberadas, ya que algunos sistemas cortan la potencia del motor cuando se aplican los frenos.
- Asegúrese de que la batería tenga suficiente carga.
- Los frenos se sienten débiles:
- Inspeccione las pastillas de freno para detectar desgaste y reemplácelas si es necesario.
- Check brake cable tension and adjust as needed.
- Ruidos inusuales:
- Inspeccione la cadena para verificar que tenga lubricación y tensión adecuadas.
- Check for loose components or debris caught in moving parts.
Cuándo contactar con el soporte técnico:
If you encounter a problem that cannot be resolved using the troubleshooting steps above, or if you suspect a serious malfunction, please contact Fafrees customer support.
What to do if there is a problem with the bike?
Please provide a precise description of your problem. If photos or videos are available, it would be preferable for our engineers to offer an effective solution within two working days. You can send us the video link as a photo, as Amazon does not allow sending videos directly.
7. Especificaciones
| Característica | Especificación |
|---|---|
| Marca | Fafrees |
| Número de modelo | Polar FF20 |
| Rango de edad (descripción) | Adulto |
| Tipo de bicicleta | Electric Bike, Fatbike, Folding Electric Bike, Mountain Electric Bike |
| Color | Rojo |
| Tamaño de la rueda | 20 pulgadas (81.28 cm) |
| Material del marco | Aleación de aluminio |
| Tipo de suspensión | Suspensión de horquilla |
| Frenos | Disc Brakes (160mm F/R rotors) |
| Número de velocidades | 7 |
| Fuente de poder | Motor eléctrico |
| Par motor | 65 Nm |
| Batería | 2 x 48V 10.4Ah (499.2 Wh each) |
| Alcance máximo (modo PAS) | 95 - 160 kilómetros |
| Alcance máximo (modo eléctrico) | 95 - 115 km (estimated, based on similar models) |
| Max Incline Capacity | 25° |
| Capacidad de carga máxima | 150 kilogramos |
| Dimensiones del producto (L x An x Al) | 179 x 68 x 121 cm |
| Peso neto del producto | 34 kilogramos |
| Componentes incluidos | Battery Charger, Fafrees FF20 Polar Electric Bike, Tool Kit, User Manual |
| Usos específicos | Gravel, Snow, Trail, Road |
8. Garantía y soporte
Fafrees is committed to providing quality products and excellent customer service.
Política de devolución de 8.1
This product is eligible for returns within 30 días of receipt, in accordance with the seller's return policy. Please refer to the purchase platform for detailed return instructions.
8.2 Atención al cliente
For any questions, technical assistance, or warranty claims, please contact Fafrees customer service. We aim to respond to all inquiries within 24 business hours.
You can typically find contact information on the Fafrees official website or through the platform where you purchased the product. For Amazon purchases, you can contact the seller "Fafrees Official" via your order details.
Fafrees Official Store: Visit Fafrees Store on Amazon