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Fafrees FF20 Polar 20″ Dual Battery Folding Electric Bike UK

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Power source battery

The Fafrees FF20 Polar sets itself apart with a dual battery system, two independent 48V 10.4Ah batteries combine for 998Wh of total energy and up to 140km of range in pedal assist mode. A dual-battery equalizer balances output across both cells, reducing wear and extending overall battery lifespan significantly compared to single-battery rivals.

 

A 65Nm geared hub motor, 20x4.0 inch fat tyres for snow, sand and gravel, and a fold-in-30-seconds frame make it equally practical for long-distance commuting, weekend adventures and compact everyday storage.

Title
Fafrees FF20 Polar 20″ Dual Battery Folding Electric Bike UK
Type
Electric Bike
Age Range
18-60 Years Old Adult
Power Source
battery
Brakes
Disc
Color
GREEN
Frame Material
Aluminum
Wheel Size (Inches)
20 Inches
Suspension Type
Front
Weight (kg)
34 Kilograms
Number of Speeds
7
Features
🚲 High-Capacity 48V Dual Batteries (20.8Ah Total) Equipped with two 48V 10.4Ah removable batteries (tube + frame) | delivering a combined 998Wh of energy for up to 140km range in pedal-assist mode. The dual-battery equalizer balances output | reduces load on each battery | and extends overall lifespan. Both batteries can be used independently or together for flexible riding needs. | 🚲 65N·m Powerful Brushless Motor & Multiple Riding Modes The geared hub motor delivers 65N·m of torque for strong hill-climbing performance and smooth acceleration. Default top speed is 25 km/h to comply with UK regulations. With the detachable throttle handle | you can switch between pure electric | pedal-assist | and pedal-only modes at any time. | 🚲 Quick-Fold Design—Ready in 30 Seconds The low wheelbase frame makes mounting easy and is skirt-friendly. Folds into a compact size in just 30 seconds | and the bike weighs only 34 kg | making it convenient to store in car boots | motorhomes | offices | or small flats. Perfect for commuting and travelling. | 🚲 Front Suspension & Enhanced Riding Comfort The 40mm travel front suspension fork | 20×4.0" fat tyres | and a wide high-resilience saddle absorb bumps and rough terrain for a smoother | more comfortable ride. Ideal for long journeys over city streets | snow | sand | or gravel paths. | 🚲 Smart LCD Display & Safety-Focused Design Comes with a large HD LCD colour display showing speed | battery level | mileage | and selectable 5 speed levels. Includes walk-assist and cruise-control functions. Equipped with dual disc brakes | 160mm rotors front & rear | and power-off brake levers for strong stopping power. The 15W front headlight + rear brake light ensure visibility and safety when riding at night. | 🚲 Reliable Support If you experience any issues | simply send us a video | photo | or description. ★We promise a 100% satisfactory solution and quick support.★
Included Components
1 x FAFREES electric bike 1 x Battery charger 1 x Tool kit 1 x User manual
Skill Level
Intermediate
Style
Electric Air Pump

Pros

  • Dual 48V 10.4Ah batteries combine for 998Wh and 140km range
  • Dual-battery equalizer extends battery lifespan and balances output
  • Both batteries usable independently or together for flexible riding
  • 65Nm geared hub motor for strong hill climbing and smooth acceleration
  • 20×4.0 inch fat tyres for snow, sand, gravel and city streets
  • Folds in 30 seconds, fits car boots, motorhomes and small flats
  • Detachable throttle for pure electric, pedal assist and manual modes
  • Dual disc brakes with 160mm rotors front and rear
  • 15W front headlight and rear brake light for night safety
  • HD LCD colour display with 5 speed levels, walk assist and cruise control
  • 40mm front suspension for rough terrain comfort
  • Skirt-friendly low step frame design
  • Available in green and blue
  • UK legal 25km/h default speed, no licence needed

Cons

  • Heavy at 34kg due to dual battery system
  • 7 to 8 hour charge time for both batteries fully
  • Cannot be dispatched to all UK delivery locations
  • Front suspension only, no rear suspension
  • No reviews yet, limited buyer feedback available
  • Premium price compared to single battery folding rivals

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