Highlights based on this e-bike’s specs, comparisons and practical strengths.
100
Excellent battery efficiency
The bike appears to get strong range from its battery size.
The bike appears to get strong range from its battery size.
The calculated range per battery unit is 158.73.
84
Useful removable battery
The removable battery makes charging, storage and battery handling more flexible.
The removable battery makes charging, storage and battery handling more flexible.
The folding bike format benefits from removable battery flexibility for storage and transport.
The longer charging time makes it more useful to charge the battery separately from the bike.
The folding frame and removable battery combination should make storage and transport more flexible.
83
Good storage practicality
The foldable frame should make the bike much easier to store indoors or in tight spaces.
The foldable frame should make the bike much easier to store indoors or in tight spaces.
The folding bike format is naturally better suited to storage in flats, offices or cars.
The smaller wheel size should help reduce the bike’s storage footprint.
The removable battery can make storage and indoor charging more flexible.
62
Mixed liftability
The bike weight is average for this type of e-bike.
The bike weight is average for this type of e-bike.
The listed weight is 19.9 kg.
The carbon frame material should help keep weight down.
The foldable frame can make the bike easier to move through tight spaces or store.
The removable battery can reduce the weight when lifting or moving the bike.
The folding bike format is usually easier to move, store or carry short distances.
The smaller wheel size should make the bike more compact and easier to handle off the bike.
61
Fair value for money
The price/value label suggests this bike is very strong value compared with similar options.
The price/value label suggests this bike is very strong value compared with similar options.
The listed price is GBP 799.
The bike appears to save around GBP 3,864 versus the average.
A removable battery adds practical value for charging and storage.
A foldable frame adds practical value for storage, transport or mixed-mode commuting.
The included display or control unit adds useful everyday value.
The bike appears to be a recent or current model.
53
Decent everyday equipment
The included display or control unit adds useful ride information for daily use.
The included display or control unit adds useful ride information for daily use.
A removable battery makes daily charging and storage more flexible.
Rim brakes are usable everyday equipment, though less confidence-inspiring in poor weather.
A foldable frame adds useful everyday storage and transport flexibility.
The folding bike format adds practical everyday transport flexibility.
Overview
The B’TWIN E-Fold 100 is a compact, foldable e-bike designed for urban commuting and easy storage, with a lightweight carbon frame that’s simple to carry and store. It offers smooth motor support for casual riding, though it lacks the punch needed for steep hills or heavy loads. The efficient battery provides a decent range for short trips, and the removable battery adds convenience for charging and storage. However, rim brakes may feel less confident on descents, and the motor’s power is modest compared to similar models, making it better suited for flat or gently rolling terrain.
Best For
✓
This folding e-bike should suit riders who prioritize portability and convenient storage solutions, especially for urban or short-distance travel. Its foldable design and removable battery make it easy to carry and charge in various locations, which is a key advantage for commuters or those with limited storage space. The bike's efficient battery use also supports riders who want to maximize range on daily trips without frequent recharging.
Who Should Avoid It
×
Riders who prioritize longer rides or need a larger battery may want to compare alternatives, as the range is below average for similar folding e-bikes. Riders who value strong braking confidence or faster charging may also find stronger options next to rivals in this category. However, the bike still suits those who need compact storage, efficient battery use, and a foldable design for urban or mixed-mode commuting.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
47
Some maintenance considerations
Weak
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Chain drive is common and serviceable, but needs more cleaning and lubrication than a belt drive.
Rim brakes are simple, but can wear faster in poor weather and wet conditions.
A removable battery makes charging, storage and battery care easier.
The tyre description suggests puncture protection, which should reduce maintenance interruptions.
The carbon frame material can be lightweight, though damage checks may need more care.
83
Good storage practicality
Good
The foldable frame should make the bike much easier to store indoors or in tight spaces.
The foldable frame should make the bike much easier to store indoors or in tight spaces.
The folding bike format is naturally better suited to storage in flats, offices or cars.
The smaller wheel size should help reduce the bike’s storage footprint.
The removable battery can make storage and indoor charging more flexible.
62
Mixed liftability
Mixed
The bike weight is average for this type of e-bike.
The bike weight is average for this type of e-bike.
The listed weight is 19.9 kg.
The carbon frame material should help keep weight down.
The foldable frame can make the bike easier to move through tight spaces or store.
The removable battery can reduce the weight when lifting or moving the bike.
The folding bike format is usually easier to move, store or carry short distances.
The smaller wheel size should make the bike more compact and easier to handle off the bike.
84
Useful removable battery
Good
The removable battery makes charging, storage and battery handling more flexible.
The removable battery makes charging, storage and battery handling more flexible.
The folding bike format benefits from removable battery flexibility for storage and transport.
The longer charging time makes it more useful to charge the battery separately from the bike.
The folding frame and removable battery combination should make storage and transport more flexible.
0
Very slow charging speed
Poor
Charging time is longer than average for this type of e-bike.
Charging time is longer than average for this type of e-bike.
The quoted charging time is long in absolute terms.
100
Excellent battery efficiency
Excellent
The bike appears to get strong range from its battery size.
The bike appears to get strong range from its battery size.
The calculated range per battery unit is 158.73.
53
Decent everyday equipment
Mixed
The included display or control unit adds useful ride information for daily use.
The included display or control unit adds useful ride information for daily use.
A removable battery makes daily charging and storage more flexible.
Rim brakes are usable everyday equipment, though less confidence-inspiring in poor weather.
A foldable frame adds useful everyday storage and transport flexibility.
The folding bike format adds practical everyday transport flexibility.
9
Limited bad-weather practicality
Poor
Rim brakes can feel less confidence-inspiring in wet conditions.
Rim brakes can feel less confidence-inspiring in wet conditions.
Built-in lights are not listed, so bad-weather visibility may depend on extra accessories.
The tyre description suggests useful grip or practicality for mixed and wet conditions.
The folding bike format can still be practical for mixed-mode commuting in poor weather.
The bike weight may help it feel more planted in wet or windy conditions.
Frame material is listed as carbon fiber, which gives useful durability and maintenance context.
10
Limited family utility practicality
Poor
The folding bike format can be practical for storage, but usually has less utility capacity.
The folding bike format can be practical for storage, but usually has less utility capacity.
The listed maximum payload is 100 kg.
A removable battery makes charging easier around family or utility use.
50W more power20 miles more range3 Ah more battery5 kg lighterSame gears
Potential limitations
Areas where this e-bike may be less strong based on its specs and comparisons.
0
Limited motor punch
Motor power is low compared with similar e-bikes.
Motor power is low compared with similar e-bikes.
Torque is average for this type of e-bike.
Power-to-weight is low.
The calculated power-to-weight score is 10.05.
0
Not ideal for steep hills
Torque is average for this type of e-bike.
Torque is average for this type of e-bike.
Power-to-weight is low.
Motor power is low compared with similar e-bikes.
The bike has very limited gearing, which may make steeper climbs harder.
The calculated power-to-weight score is 10.05.
0
Limited downhill control
No suspension may reduce control and comfort on rough or steeper descents.
No suspension may reduce control and comfort on rough or steeper descents.
The brake type may limit confidence on descents.
0
Not very off-road capable
The folding bike format is usually less suited to rough off-road riding.
The folding bike format is usually less suited to rough off-road riding.
No suspension limits comfort and control on rough off-road terrain.
Rim brakes may be less confidence-inspiring for off-road use, especially in wet or muddy conditions.
Torque is average for this type of e-bike.
The smaller wheel size is usually less suited to rough off-road terrain.
0
Limited braking confidence
Rim brakes are likely to feel less confidence-inspiring on an e-bike, especially in wet conditions or on descents.
0
Limited rough-road comfort
No suspension may make rough roads, potholes and uneven paths feel harsher.
No suspension may make rough roads, potholes and uneven paths feel harsher.
The wheel size can handle some rough surfaces, though larger wheels may roll more smoothly.
Rim brakes may feel less controlled on rougher or wet routes.
The bike weight may help it feel more planted over rough surfaces.
Frame material is listed as carbon fiber, which gives useful comfort and build context.
0
Low power-to-weight ratio
Power-to-weight is low compared with similar e-bikes.
Power-to-weight is low compared with similar e-bikes.
Motor power is low compared with similar e-bikes.
The calculated power-to-weight score is 10.05.
0
Less refined power delivery
Ride modes are not listed, so assist adjustability is unclear.
Ride modes are not listed, so assist adjustability is unclear.
The included display or control unit should make it easier to manage assistance levels.
E-system & battery comparison
Motor Power
200 watts
▼ 88 W below average
Motor Torque
35 Nm
▼ 1.2 Nm below average
Power-to-weight
10.05 W/kg
▼ 4.6 W/kg below average
Battery Capacity
252 Wh
▼ 114 Wh below average
Claimed Max Range
40 miles
▼ 13 miles below average
Charge Time
6h
▲ 54 mins slower than average
Removable Battery
Yes
Motor Name
Decathlon proprietary brushless rear hub motor
This folding e-bike offers a modest level of motor assistance that should feel smooth and predictable for urban and short-distance use, with a focus on manageable support rather than high-speed performance. Next to similar folding e-bikes, its motor support sits in the middle ground, with some models offering more punch and liveliness for their weight. The motor should provide adequate support for climbing and loaded riding, though it may not feel as responsive or powerful as some competitors when accelerating or tackling steeper inclines. Without specific sensor or ride mode details, the assistance likely delivers a consistent feel, though adjustability may be limited. Riders looking for a reliable, efficient motor for daily commutes and light use should find this setup suitable, especially given its strong battery efficiency for the size.
This explanation is based on the bike’s motor power, torque, battery capacity, claimed range, charging
time, sensor type and how those figures compare with similar e-bikes in our database.
eBike FAQs
Is this bike suitable for long-distance commuting?
This e-bike offers a range of around 40 miles on a single charge, which should be sufficient for most daily commutes, especially in urban areas with flat or gently rolling terrain. However, if you regularly travel longer distances or encounter steep hills, you may need to plan for more frequent charging. The removable battery adds convenience for charging, and the foldable design makes it easy to store or carry when not in use.
How does the motor perform when climbing hills?
The motor provides adequate support for moderate hills but may struggle with steeper inclines. With 200 watts of motor power and 35 Newton meters of torque, it should handle typical urban gradients reasonably well, though it's not the most powerful option in its class. If you frequently encounter steep hills, you may find yourself needing to pedal more actively or adjust your speed to maintain momentum.
Is the battery efficient enough for daily use?
The battery efficiency is above average for similar folding e-bikes, meaning you can expect a decent range for daily use. However, the battery capacity is below average, which may limit range on longer trips. The 40-mile range should be sufficient for most daily commutes, especially with the removable battery making charging more convenient.
How easy is it to fold and store this bike?
This folding e-bike is designed with storage and portability in mind, and the foldable frame should make it much easier to store indoors or in tight spaces. The removable battery adds to the convenience, allowing you to charge it separately if needed. While the bike is easy to fold, its weight is average for this type of e-bike, so liftability may depend on your strength and the situation.
Does the bike handle well on city streets and mixed terrain?
The B’TWIN E-Fold 100 should handle well on city streets and mixed terrain for a folding e-bike. Its design focuses on portability and daily use, making it practical for urban riding. However, rim brakes may feel less confident in wet conditions or on descents, so riders should be mindful of braking on slippery surfaces.
How long does it take to charge the battery?
The battery takes around 6 hours to fully charge, which is a reasonable time for a folding e-bike. While this is slower than some similar models, the removable battery design makes it easier to charge at home or on the go. If you need a quick top-up during the day, you can take the battery with you to charge separately.
Is this bike good value for the features it offers?
This bike offers a reasonable balance of features for its price, especially considering its foldable design and removable battery, which are both practical for urban commuters. While the motor power and battery capacity are below average for similar e-bikes, the battery efficiency is above average, which helps extend the range. The price is favourable compared to similar models, making it a good option if you prioritize portability and storage over maximum power or range.
What are the main limitations of this e-bike?
This e-bike is well-suited for folding and storage, but it has some limitations. The motor power and torque are below average for similar e-bikes, which may make climbing steeper hills more challenging. Additionally, the rim brakes, while functional, may not provide the same level of confidence as hydraulic brakes, especially in wet conditions or on descents. The battery range is also below average, so you may need to recharge more frequently for longer rides.
eBike Overview
eBike Type: Folding Bike
The style of riding intended for this bike
Released:
2023
The bike was released 3 years ago
Screen
LED control screen
Lights Included
No
Weight (inc battery): 19.9 kg
The website average for electric bikes is
23.93 kg.
This electric bike is 4.04 kg under the average. Total bike weight may vary depending on frame size.
Sizing & Geometry
Min / Max Rider Height
One size: 145–195 cm
Folded Dimensions
Unknown
Wheel & Tire Details
Wheelset Name
20-inch single-walled aluminum rims with steel spokes
Wheelset Size
20 inch
Tires
* 20 x 1.75. * Skinwall technology for better robustness, efficiency and grip. To reduce the risk of punctures, optimise your battery range and enjoy a more efficient ride, we recommend inflating your tyres to a pressure of 4.5 bar.This is the maximum pressure for your tyres. We recommend ing your tyre pressure every three weeks.
Frame Info
Frame Material
Carbon Fiber
Suspension Type
No suspension
Foldable Frame
Yes
Max Payload
100 kg (220.5 lbs)
Drivechain Details
Groupset details
Single-speed drivetrain
Drivechain type
Chain drive
Shifters
None
Amount of gears
1 Gears
Rear Derailleur
None
Front Derailleur
None
Cassette
16-tooth single-speed freewheel sprocket
Cranks
165 mm steel crank arms with a 52-tooth front chainring
Chain
Single-speed anti-rust treated chain
Bottom Bracket
Standard square-taper steel bottom bracket with sealed cartridge bearings
