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 198.41.
92
Excellent removable battery practicality
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.
Because the bike is heavier than average, removing the battery can make handling and charging more convenient.
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.
91
Excellent built-in lighting
Built-in lights are included, which is useful for commuting and low-light riding.
Built-in lights are included, which is useful for commuting and low-light riding.
The folding bike format can benefit from integrated lights for mixed-mode commuting.
The display or control unit may make light and ride-status management easier.
76
Well-equipped for daily use
Built-in lights add useful everyday practicality.
Built-in lights add useful everyday practicality.
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.
74
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 bike is heavier than average for its type, which may make storage and moving it harder.
The smaller wheel size should help reduce the bike’s storage footprint.
The removable battery can make storage and indoor charging more flexible.
70
Good 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 999.
The bike appears to save around GBP 3,664 versus the average.
Cadence-sensing assistance still provides basic motor support.
Built-in lights add practical everyday value.
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.
The release age is recent, which supports value if pricing is competitive.
55
Decent rider controls
The included display or control unit should give useful ride information and control.
The included display or control unit should give useful ride information and control.
Cadence sensing provides basic assist control.
Built-in lights add useful everyday control and visibility integration.
53
Mixed commuting practicality
The folding bike format can be useful for trains, offices, flats and mixed-mode commuting.
The folding bike format can be useful for trains, offices, flats and mixed-mode commuting.
Range is below average, but may still be usable for shorter commutes.
Charging time is longer than average, which may be less convenient for daily use.
Built-in lights are useful for commuting and low-light riding.
A removable battery makes home, office or indoor charging easier.
A foldable frame can make storage, train travel and office parking easier.
The display or control unit should make it easier to monitor assist level and battery use.
Rim brakes can work for commuting, though they may be less confidence-inspiring in wet conditions.
The bike is heavier than average for its type, which may make daily handling less convenient.
53
Mixed maintenance practicality
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.
Built-in lights reduce the need to manage separate lighting accessories.
53
Mixed liftability
The bike is heavier than average for its type, so it may not be especially easy to lift.
The bike is heavier than average for its type, so it may not be especially easy to lift.
The listed weight is 21.4 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.
Overview
The B’TWIN E-Fold 500 2024 is a compact, foldable e-bike designed for urban commuting and easy storage, with a lightweight carbon frame that makes it simple to carry and store. It offers smooth motor support for everyday riding, though the 250W motor and 35Nm torque may feel less punchy when climbing steep hills or accelerating from a standstill. The bike’s efficient battery provides a reasonable range for short commutes, and the removable battery adds convenience for charging and storage. However, the rim brakes may lack confidence on wet or downhill sections, and the charging time is notably slower than average for this class of e-bike.
Best For
✓
This folding e-bike should suit riders who prioritize portability and convenient storage solutions, especially for urban environments or mixed-mode travel. Its efficient battery use and removable battery design make it a practical choice for those who need flexible charging options and want to maximize range on shorter trips. The foldable frame and compact size also make it a good fit for riders who need to store their bike in small spaces or take it on public transport. Riders who value a balance between affordability and practical features may find this bike particularly appealing for daily commuting or casual riding.
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 wanting stronger braking confidence may prefer disc brake alternatives, as rim brakes can feel less reassuring in wet conditions or on descents. The bike’s charging speed is also slower than average for this type of e-bike, which could be a consideration for those needing quick top-ups. However, the bike still offers good value for money and efficient battery use, making it a solid choice for shorter commutes or casual riding.
Ownership considerations
These points highlight practical ownership factors such as maintenance, storage, charging, everyday
handling and bad-weather usability.
53
Mixed maintenance practicality
Mixed
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.
Built-in lights reduce the need to manage separate lighting accessories.
74
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 bike is heavier than average for its type, which may make storage and moving it harder.
The smaller wheel size should help reduce the bike’s storage footprint.
The removable battery can make storage and indoor charging more flexible.
53
Mixed liftability
Mixed
The bike is heavier than average for its type, so it may not be especially easy to lift.
The bike is heavier than average for its type, so it may not be especially easy to lift.
The listed weight is 21.4 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.
92
Excellent removable battery practicality
Excellent
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.
Because the bike is heavier than average, removing the battery can make handling and charging more convenient.
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 198.41.
76
Well-equipped for daily use
Good
Built-in lights add useful everyday practicality.
Built-in lights add useful everyday practicality.
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.
31
Some bad-weather limitations
Weak
Rim brakes can feel less confidence-inspiring in wet conditions.
Rim brakes can feel less confidence-inspiring in wet conditions.
Built-in lights are useful for rain, low light and darker commutes.
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.
17
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 110 kg.
Built-in lights are useful for school runs, errands and daily utility riding.
A removable battery makes charging easier around family or utility use.
10 miles more rangeSame power3 Ah more battery7 kg lighterSame gears
No higher-power alternatives found.
Potential limitations
Areas where this e-bike may be less strong based on its specs and comparisons.
0
Limited motor punch
Motor power is below average for this type of e-bike.
Motor power is below average for this type of e-bike.
Torque is average for this type of e-bike.
Power-to-weight is low.
Cadence-only assistance may feel less responsive than torque-sensing support.
The bike is heavier than average for its type.
The calculated power-to-weight score is 11.68.
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 below average for this type of e-bike.
The cadence sensor may feel less natural on climbs than a torque sensor.
The bike has a basic but usable gear range for moderate climbs.
The bike is heavier than average for its type.
The calculated power-to-weight score is 11.68.
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.
Rim brakes are likely to feel less confidence-inspiring on an e-bike, especially in wet conditions or on descents.
The bike is heavier than average for its type and does not have hydraulic disc brakes.
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 below average for this type of e-bike.
The bike is heavier than average for its type.
The calculated power-to-weight score is 11.68.
0
Limited technical trail control
The folding bike format is usually less suitable for technical trail riding.
The folding bike format is usually less suitable for technical trail riding.
No suspension is a major limitation for technical trail control.
Rim brakes are a major limitation for technical trail control.
The smaller wheel size is usually less suitable for technical trail control.
Torque is average for this type of e-bike.
Cadence-sensing assistance is usable, but usually less precise than torque sensing on technical terrain.
The bike is heavier than average for its type, which may affect technical handling.
E-system & battery comparison
Motor Power
250 watts
▼ 38 W below average
Motor Torque
35 Nm
▼ 1.2 Nm below average
Power-to-weight
11.68 W/kg
▼ 3.0 W/kg below average
Battery Capacity
252 Wh
▼ 114 Wh below average
Claimed Max Range
50 miles
▼ 3.3 miles below average
Charge Time
6h
▲ 54 mins slower than average
Sensor Type
Cadence Sensor
Removable Battery
Yes
Motor Name
Decathlon unbranded / proprietary brushless hub motor
This folding e-bike offers a modest level of assistance that should feel smooth and predictable for urban riding and short trips, with a focus on manageable support rather than high power. Next to similar e-bikes, it provides a simpler, less punchy ride with a cadence sensor that may feel less responsive than torque-sensing systems on some models. The motor should help with gentle climbs and everyday use, though it may not deliver the same level of acceleration or low-speed push as more powerful systems in its category. The cadence sensor ensures assistance is tied to pedaling effort, which can be straightforward but may lack the subtlety of more advanced systems. Riders looking for a lightweight, efficient e-bike for city use or casual travel may find this motor setup to be a practical choice.
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 daily commuting and folding for storage or transport?
This folding e-bike is well-suited for daily commuting, thanks to its compact design and lightweight frame, which makes it easy to carry and store. The 50-mile range should cover most short to medium commutes, and the removable battery adds convenience for charging. However, the bike’s weight and slower charging time may be considerations for frequent or long-distance users.
How does the motor perform when climbing hills or accelerating from a stop?
The motor provides smooth support for climbing hills and accelerating from a stop, but it may feel a bit limited when tackling steep inclines or needing quick bursts of speed. With 250W of motor power and 35Nm of torque, it should handle moderate hills and city riding well, but it's not the most powerful option in its category. If you frequently ride steep terrain, you might notice the motor's limitations, but for everyday use and folding convenience, it should still be adequate.
Is the battery efficient enough for regular use, considering its low capacity?
The battery efficiency is quite good for a folding e-bike, as it provides a 50-mile range despite having a below-average battery capacity. This means you can expect strong performance per watt-hour, which is helpful for regular use. However, if you frequently need to ride longer distances without access to charging, you may need to plan accordingly. The removable battery also adds convenience for charging and storage, which is a plus for a folding bike.
How practical is the removable battery for charging and storage?
The removable battery is a practical feature for this folding e-bike, allowing you to charge it separately from the bike or store it in a different location if needed. This can be especially useful if you're limited by space at home or want to keep the bike lightweight when folded. However, since the battery capacity is below average for similar e-bikes, you may need to charge it more frequently, which could be a consideration for longer rides or daily use.
Does the bike’s weight affect its performance or portability?
The bike’s weight can influence both its performance and portability. A heavier bike may feel less nimble on rough terrain or when maneuvering in tight spaces, but the folding design makes it easier to store and transport. The weight also affects how easy it is to lift when folding or carrying it, which is an important consideration for daily use and storage.
What is the real-world range like, and is it enough for typical daily rides?
The real-world range is around 50 miles on a single charge, which should be sufficient for most daily commutes or short trips. However, it's below average for similar folding e-bikes, so if you regularly need to ride longer distances without recharging, you may need to plan for extra battery capacity or charging stops. The battery efficiency is above average, meaning you get more range from its relatively low 252Wh capacity, which is a positive aspect for a folding bike.
How does the braking system perform, especially in wet or challenging conditions?
The bike uses rim brakes, which may feel less confident in wet or challenging conditions compared to disc brakes. This is common for folding e-bikes in this category, and you may need to adjust your riding style on descents or in the rain. While the brakes should handle everyday use, they may not inspire as much confidence as hydraulic or mechanical disc brakes in more demanding situations.
Is this bike good value for money compared to similar folding e-bikes?
This bike offers a favourable price point compared to similar folding e-bikes, making it a good value option. While it has a lower battery capacity and range than some competitors, its strong battery efficiency helps compensate, giving you decent range for daily use. The removable battery adds practicality for charging and storage, which is especially useful for folding e-bikes. However, the motor power and power-to-weight ratio are below average, which may affect performance on hills or when carrying heavier loads.
eBike Overview
eBike Type: Folding Bike
The style of riding intended for this bike
Released:
2024
The bike was released 2 years ago
Screen
LED control screen
Lights Included
Yes
Weight (inc battery): 21.4 kg
The website average for electric bikes is
23.93 kg.
This electric bike is 2.54 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-wall aluminium rims (28 holes front and rear) built on an aluminium front hub and a motorized rear hub
Wheelset Size
20 inch
Tires
* 20 x 1.75. * Skinwall technology for better durability, efficiency and grip. * Tyre sidewalls: - reflective bands to make you visible at night - brown for a vintage look To reduce the risk of getting a puncture, optimise your battery range and enjoy a more efficient ride, we recommend inflating your tyres to 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
110 kg (242.5 lbs)
Drivechain Details
Groupset details
Shimano Tourney
Drivechain type
Chain drive
Shifters
Shimano Tourney 6-speed Grip Shifter (twist-shift mechanism integrated into the handlebar grip)
Amount of gears
6 Gears
Rear Derailleur
Shimano Tourney 6-speed
Front Derailleur
None
Cassette
Shimano 6-speed freewheel with a 14-28 T tooth range
Cranks
170 mm aluminium crank arms with a 52-tooth (52 T) single steel chainring
Chain
KMC Z 6
Bottom Bracket
Square-taper sealed cartridge bottom bracket with an integrated cadence sensor
Brakes
Brakes
Rim
Brake Type: Rim Brake
That old school attraction!
Shifters
Shimano Tourney 6-speed Grip Shifter (twist-shift mechanism integrated into the handlebar grip)
