Product Description
FAFREES FF20 Polar · Dual-Battery All-Terrain Folding Fat-Tyre E-bike (13.4Ah × 2)
If your requirement for range goes beyond "enough" to "ride without thinking about it," the FF20 Polar 13.4Ah dual-battery version is the answer. 13.4Ah+13.4Ah, total capacity 26.8Ah, pure electric range 100-130km, assisted range 130-170km. A 20km daily commute still leaves plenty of charge after a full week; for a 100km weekend trip, two batteries used alternately get you there and back without hunting for outlets along the way. Both batteries are removable and can be used individually. Take them home to charge – full in 8 hours. IPX4 waterproofing – rain won't stop you.
65N·m torque – any terrain, no compromise
Rear-drive motor with 65N·m peak torque and 20° max climb angle. Garage exits, overpasses, dirt trails – no run-up needed, motor engagement is smooth and steady. Torque delivery is direct – brisk starts at traffic lights, confident climbing even with load.
20×4.0″ fat tyres + suspension fork – rough roads feel like flat ground
4.0″ wide tyres with a large contact patch – snow, sand, gravel, city asphalt – all handled with ease. The wide tyres provide ample floatation and grip – no slipping on wet surfaces, no wobbling through corners. The suspension fork filters out bumps – over speed bumps and potholes, what reaches your hands is gentle undulation, not harsh shocks.
Hydraulic disc brakes + Shimano 7-speed – reliable stopping and shifting
Front and rear hydraulic disc brakes deliver direct stopping power with linear feel – squeeze and it stops, predictable even in rain. Compared to mechanical discs, hydraulic brakes offer stronger performance with less maintenance. Shimano 7-speed gearing covers flats and climbs with smooth, crisp shifts.
3-step folding – storage without stress
Folded to 93×64×75cm – fits easily into car boots, office corners, or home spaces. Net weight 35kg, aluminium alloy frame balances strength and lightness. Handlebar height 113-121cm and seat height 81-102cm adjustable – fits riders 160-200cm.
LCD display + five riding modes
LCD screen clearly shows speed, battery level, mileage, and gear. 0-5 assist levels – pure electric, assist, and human modes switch freely. Cruise control – on long rides, your right hand gets a break.
The FF20 Polar 13.4Ah dual-battery version handles commuting, weekend trips, and light off-road – one bike, three scenarios, with range that never holds you back.
Product parameters
Model: FF20 Polar (13.4Ah × 2 dual-battery version)
Type: Folding fat-tyre e-bike
Unfolded size: 179×121×68cm
Folded size: 93×64×75cm
Handlebar height: 113-121cm
Seat height: 81-102cm
Package size: 95×45×79cm
Tyre: 20×4.0″
Pedal-ground clearance: 16cm
Suitable height: 160-200cm
Net weight: 35kg
Package weight: 43kg
Single battery weight: approx. 3.7kg
Max load: 150kg
Frame material: Aluminium alloy
Tyre type: Pneumatic
Max climb angle: 20°
Max torque: 65N·m
Drive type: Rear drive
Battery type: Lithium-ion
Rated voltage: 48V
Battery capacity: 13.4Ah × 2 (total 26.8Ah)
Charging time: approx. 8 hours
Pure electric range: 100-130km
Assisted range: 130-170km
Fork type: Spring suspension fork
Fork travel: 40mm
Brakes: Front and rear hydraulic disc brakes
Gears: Shimano 7-speed
Display: LCD
Assist levels: 0-5
Cruise control: Yes
Folding parts: Handlebar, frame
Lighting: Headlight, taillight
Riding modes: Human/assist/pure electric
Waterproof rating: IPX4
