1. Impurtante Information Safety
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.
- Portate sempre un cascu è l'equipaggiu di sicurezza adattatu quandu cavalcate.
- Assicuratevi chì tutti i cumpunenti sianu fissati bè è in bonu statu di funziunamentu prima di ogni corsa.
- Ùn cavalcate micca sottu a influenza di l'alcohol o di droghe.
- Familiarizatevi cù e lege è i regulamenti di trafficu lucali.
- Siate attenti à ciò chì vi circonda è guidate in modu difensivu.
- Ùn supere micca a capacità di carica massima di 150 kg.
- Impurtante: 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. Produttu Finituview
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.
Funzioni chjave:
- Sistema Dual Battery: 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.
- Schermu LCD à culori: 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.
- Confortable Ride: 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.
- Freni à discu duale: 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.
- Illuminazione integrata: Features a super bright 15W front light and a 5W rear brake light for enhanced visibility and safety during night rides.
Dimensioni è pesu di u produttu:
- Dimensioni (L x W x H): 179 x 68 x 121 cm (spiegata)
- Pesu nettu: 34 kg
- Capacità massima di carica: 150 kg
- Altezza consigliata per i piloti: 160-200 cm

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. Setup è Assemblea
Your Fafrees FF20 Polar electric fatbike comes partially assembled. Follow these steps for final assembly and initial setup.
3.1 Disimballaggio è ispezione iniziale
- Eliminate cù cura a bicicletta è tutti i cumpunenti da l'imballu.
- 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 Installazione è carica di a batteria
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.
- L'indicatore di carica nantu à u caricatore mostrerà u statu di carica (per esempiu, rossu per a carica, verde per una carica cumpleta).
- U tempu di carica pò varià, ma di solitu ci vole parechje ore per una carica cumpleta.
- 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 Verifiche prima di a corsa
- Pneumatici: Check tire pressure. The recommended pressure is usually indicated on the tire sidewall.
- Freni: Test both front and rear brakes to ensure they engage properly and stop the bike effectively.
- Lumi: Verify that the front and rear lights are functioning.
- Liberazioni rapide: Ensure all quick-release levers (seatpost, handlebar, folding mechanism) are securely tightened.
4. Operating Instructions
4.1 Accensione/Spegnimentu è Display LCD
To power on the bike, press and hold the power button on the LCD display. The display will illuminate, showing various riding parameters.
- Pulsante di putenza: 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.
- Display Information: 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 Modi di guida
- Sistema di assistenza à i pedali (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.
- Modu elettricu (acceleratore): If equipped, the throttle allows you to ride without pedaling. The range in pure electric mode is typically 95-115 km.
- Modu manuale: Ride the bike like a traditional bicycle without any motor assistance.
4.3 Funzioni Speciali
- Cruise Control: Maintain a fixed speed for 8 seconds, and the bike will automatically enter cruise control mode, freeing your fingers.
- Modu d'assistenza à a caminata: 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 Piegatura è Trasportu
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. Mantenimentu
Regular maintenance ensures the longevity and safe operation of your Fafrees FF20 Polar electric fatbike.
5.1 Cura di a batteria
- Charge batteries regularly, even if the bike is not in use, to maintain battery health.
- Evitate di svuotà cumpletamente a batteria prima di ricaricalla.
- Store the bike and batteries in a cool, dry place, away from direct sunlight and extreme temperatures.
- Sè vo a conservate per un periodu prolongatu, caricate a batteria à circa 50-70% è verificatela periodicamente.
5.2 Mantenimentu di i pneumatici
- Regularly check tire pressure and inflate to the recommended PSI (indicated on the tire sidewall).
- Ispezionate i pneumatici per usura, tagli o forature prima di ogni corsa.

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 di freni
- Check brake pads for wear and replace them when necessary.
- Ensure brake levers are responsive and provide adequate stopping power. Adjust cable tension if needed.
5.4 Pulizia è lubrificazione generale
- Pulite a bicicletta regularmente cù l'annunziuamp pannu. Evitate l'usu di idropulitrici à alta pressione direttamente nantu à i cumpunenti elettrichi.
- Lubricate the chain and other moving parts periodically to ensure smooth operation and prevent rust.
6. Risoluzione di prublemi
This section provides solutions to common issues you might encounter with your Fafrees FF20 Polar electric fatbike.
Problemi cumuni è suluzione:
- A bicicletta ùn s'accende micca:
- Verificate se a bateria hè stallata bè è carica.
- Assicuratevi chì tutte e cunnessione elettriche sianu sicure.
- U mutore ùn assiste micca:
- Verify the pedal-assist level on the LCD display is not set to zero.
- Verificate s'è e leve di u frenu sò cumpletamente liberate, postu chì certi sistemi taglianu a putenza di u mutore quandu i freni sò applicati.
- Assicuratevi chì a bateria hà abbastanza carica.
- I freni si sentenu debuli:
- Verificate l'usura di e pastiglie di frenu è rimpiazzatele se necessariu.
- Check brake cable tension and adjust as needed.
- rumori inusuali:
- Verificate a catena per una lubrificazione è una tensione adeguate.
- Check for loose components or debris caught in moving parts.
When to Contact Support:
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. Specificazioni
| Feature | Specificazione |
|---|---|
| Marca | Fafrees |
| Numero di mudellu | FF20 Polar |
| Fascia d'età (descrizzione) | Adultu |
| Tipu di bicicletta | Electric Bike, Fatbike, Folding Electric Bike, Mountain Electric Bike |
| Culore | Rossu |
| Size Wheel | 20 inches (81.28 cm) |
| Materiale di quadru | Alloy d'aluminium |
| Tipu di sospensjoni | Suspension a forchetta |
| Freni | Disc Brakes (160mm F/R rotors) |
| Numeru di Velocità | 7 |
| Fonte d'energia | Motore Elettricu |
| Torque di u Motore | 65 Nm |
| Batteria | 2 x 48V 10.4Ah (499.2 Wh each) |
| Max Range (PAS Mode) | 95 - 160 chilometri |
| Max Range (Electric Mode) | 95 - 115 km (estimated, based on similar models) |
| Max Incline Capacity | 25° |
| Capacità massima di carica | 150 kg |
| Dimensioni di u produttu (L x W x H) | 179 x 68 x 121 cm |
| Pesu Nettu di u Produttu | 34 kg |
| Cumpunenti inclusi | Battery Charger, Fafrees FF20 Polar Electric Bike, Tool Kit, User Manual |
| Usi specifichi | Gravel, Snow, Trail, Road |
8. Garanzia è Support
Fafrees is committed to providing quality products and excellent customer service.
8.1 Pulitica di ritornu
This product is eligible for returns within 30 ghjorni of receipt, in accordance with the seller's return policy. Please refer to the purchase platform for detailed return instructions.
8.2 Assistenza Clienti
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





