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.
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.
67
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 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.
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 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 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 casual riding, though it lacks the punch needed for steep hills or quick acceleration. The removable battery adds flexibility for charging and storage, and the bike is well-equipped with built-in lights for everyday use. However, the low battery capacity and slow charging time may require more frequent recharging, and the rim brakes feel less confident on descents or in wet conditions.
Best For
✓
This folding e-bike should suit riders who prioritize portability, compact storage and convenient charging options for urban or mixed-mode travel. Its efficient battery use and removable battery design make it a practical choice for riders who need flexibility in charging and storage, especially in city environments. The foldable frame and lightweight build also make it a good fit for riders who need to transport the bike easily or combine cycling with other forms of travel.
Who Should Avoid It
×
Riders who prioritize longer rides or faster charging may want to compare alternatives, as the bike's range is lower than average for similar folding e-bikes and charging time is slower than typical for this category. Riders who need stronger braking confidence, especially in wet conditions or on descents, might find rim brakes less reassuring and could look for disc brake-equipped models instead.
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 158.73.
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 powerSame batterySame weightSame 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
40 miles
▼ 13 miles below average
Charge Time
6h
▲ 54 mins slower than average
Sensor Type
Cadence Sensor
Removable Battery
Yes
Motor Name
Custom Decathlon B'TWIN brushless hub motor
This folding e-bike offers a straightforward, legal-style pedal assist that should feel manageable for urban riding and short trips, with support that sits in the middle ground for this type of bike. Next to similar models, it may feel less punchy and livelier, especially when compared to e-bikes with more powerful motors or torque-sensing systems. The assistance should help with moderate hills and everyday use, though it may not provide the same level of push for steeper climbs or more demanding terrain. With a cadence sensor, the motor response is likely to be simpler and less nuanced, which could affect how smoothly the assistance feels during acceleration or low-speed maneuvers. Riders looking for a lightweight, efficient motor that supports casual urban riding and doesn’t require heavy lifting may find this setup suitable, though those needing more power or refined assistance might want to consider other options.
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 transport?
This folding e-bike is well-suited for daily commuting, especially for shorter trips in urban areas. Its compact design and foldable frame make it easy to store and transport, whether you're taking it on public transit or keeping it at home. However, the low battery capacity and slower charging time may require more frequent recharging, so planning your trips around charging is important for regular use.
How does the motor perform when climbing hills or accelerating from a stop?
The motor provides smooth support for everyday use, but it may feel less punchy when accelerating from a stop or climbing steeper hills. With 250W of power and 35Nm of torque, it's adequate for moderate inclines but not the strongest in its class. If you frequently ride steep hills, you might notice the motor's limitations, but it should still handle typical urban or suburban terrain comfortably.
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 40 miles of range from a 252Wh battery, which is above average for similar models. However, the battery capacity is on the lower side, so you may need to charge it more frequently if you ride longer distances. The removable battery makes charging more convenient, especially if you need to recharge it at home or work.
How practical is the folding feature for storage and transport?
The folding feature is quite practical for storage and transport, especially with its foldable frame that makes it easier to store in small spaces or take on public transport. The removable battery adds to the convenience, allowing you to charge it separately from the bike. However, the bike's weight of 21.4 kg may make it a bit challenging to lift and carry, so consider this if you plan to frequently move it by hand.
How long does it take to charge the battery, and is that a drawback for daily use?
The battery takes around 6 hours to fully charge, which is a bit slower than average for similar e-bikes. However, the removable battery makes it easier to charge at home or work, reducing the inconvenience. While the charging time may be a minor drawback for some, the bike's efficient battery use helps extend the range, making it more practical for daily use.
Is this bike good value for money compared to similar folding e-bikes?
This bike offers a good balance of practicality and affordability for a folding e-bike, especially with its efficient battery use and removable battery design, which makes charging and storage more convenient. While its price is competitive with similar models, it has a lower battery capacity and motor power compared to some rivals, which may affect range and performance on hills. However, for everyday use and folding convenience, it should be a solid choice within its price range.
How comfortable is the bike for longer rides, given its weight and motor power?
The bike should be comfortable for longer rides, as it is designed with folding practicality and daily use in mind. However, its motor power and power-to-weight ratio are below average for similar e-bikes, which may affect acceleration and hill climbing. The 40-mile range is strong for a folding e-bike, so you should be able to cover most daily commutes comfortably without frequent recharging.
What are the main limitations of this bike for someone looking for a versatile folding e-bike?
The main limitations of this bike for a versatile folding e-bike include its weight, which is heavier than average for its type, making it slightly less easy to lift and carry. While the foldable frame offers good storage practicality, the bike's chain drive system requires more maintenance compared to belt drives, which could be a consideration for some users. However, the removable battery adds flexibility for charging and storage, which is a strong point for a folding e-bike.
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
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 double-walled aluminium rims (28 holes front and rear) for increased lateral stiffness
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.
